| Iris acaulis Pall. | Synonym |  | iPlants | 
	
		| Iris acleantha Small | Synonym |  | iPlants | 
	
		| Iris acoriformis Boreau | Synonym |  | iPlants | 
	
		| Iris acoroides Spach | Synonym |  | iPlants | 
	
		| Iris acuta Willd. | Synonym |  | iPlants | 
	
		| Iris acutifolia C.A.Mey. ex Regel | Synonym |  | iPlants | 
	
		| Iris acutiloba C.A.Mey. | Accepted |  | iPlants | 
	
		| Iris acutiloba subsp. acutiloba | Accepted |  | iPlants | 
	
		| Iris acutiloba var. bimaculata Fomin & Woronow | Synonym |  | iPlants | 
	
		| Iris acutiloba var. demawendica Bornm. | Synonym |  | iPlants | 
	
		| Iris acutiloba subsp. demawendica (Bornm.) Bornm. | Synonym |  | iPlants | 
	
		| Iris acutiloba subsp. lineolata (Trautv.) B.Mathew & Wendelbo | Accepted |  | iPlants | 
	
		| Iris acutiloba var. lineolata Trautv. | Synonym |  | iPlants | 
	
		| Iris acutiloba subsp. lineolata Mathew & Wendelbo | Synonym |  | TRO | 
	
		| Iris acutiloba var. schelkowinkowii Fomin | Synonym |  | iPlants | 
	
		| Iris adamii Willd. ex Link | Synonym |  | iPlants | 
	
		| Iris adriatica Trinajstic ex Mitic | Accepted |  | iPlants | 
	
		| Iris aegyptia Delile | Synonym |  | iPlants | 
	
		| Iris aequiloba Ledeb. | Synonym |  | iPlants | 
	
		| Iris afghanica Wendelbo | Accepted |  | iPlants | 
	
		| Iris × agatha auct. | Unresolved |  | iPlants | 
	
		| Iris aitchisonii (Baker) Boiss. | Accepted |  | iPlants | 
	
		| Iris aitchisonii var. chrysantha Baker | Synonym |  | iPlants | 
	
		| Iris alabamensis Small | Synonym |  | iPlants | 
	
		| Iris alata Poir. | Synonym |  | iPlants | 
	
		| Iris alata f. parviflora Batt. | Synonym |  | iPlants | 
	
		| Iris alata subsp. trialata (Brot.) Nyman | Synonym |  | iPlants | 
	
		| Iris × alba Savi | Synonym |  | iPlants | 
	
		| Iris alberti Regel | Accepted |  | iPlants | 
	
		| Iris albicans Lange | Accepted |  | iPlants | 
	
		| Iris albicans var. madonna Dykes | Synonym |  | iPlants | 
	
		| Iris albicans var. majoricensis (Barceló) Nyman | Synonym |  | iPlants | 
	
		| Iris albida Davidov | Synonym |  | iPlants | 
	
		| Iris × albilinea Alexander | Synonym |  | iPlants | 
	
		| Iris albispiritus Small | Synonym |  | iPlants | 
	
		| Iris albomarginata R.C.Foster | Accepted |  | iPlants | 
	
		| Iris albopurpurea Baker | Synonym |  | iPlants | 
	
		| Iris albopurpurea var. alba Makino | Synonym |  | iPlants | 
	
		| Iris albopurpurea var. bakeri Makino | Synonym |  | iPlants | 
	
		| Iris alexeenkoi Grossh. | Accepted |  | iPlants | 
	
		| Iris almaatensis Pavlov | Accepted |  | iPlants | 
	
		| Iris alpina Pall. ex Roem. & Schult. | Synonym |  | iPlants | 
	
		| Iris × alticristata Small | Synonym |  | iPlants | 
	
		| Iris × altobarbata A.E.Murray | Unresolved |  | iPlants | 
	
		| Iris amabilis Eastw. | Synonym |  | iPlants | 
	
		| Iris amasiana Bornm. ex Hausskn. | Synonym |  | iPlants | 
	
		| Iris × amnicola Alexander | Synonym |  | iPlants | 
	
		| Iris × amoena DC. | Synonym |  | iPlants | 
	
		| Iris anglica Steud. [Invalid] | Synonym |  | iPlants | 
	
		| Iris anguifuga Y.T.Zhao & X.J.Xue | Accepted |  | iPlants | 
	
		| Iris angusta Thunb. | Synonym |  | iPlants | 
	
		| Iris angustifolia Mill. | Synonym |  | iPlants | 
	
		| Iris angustifolia Gilib. [Invalid] | Synonym |  | iPlants | 
	
		| Iris annae Grossh. | Synonym |  | iPlants | 
	
		| Iris antilibanotica Dinsm. | Accepted |  | iPlants | 
	
		| Iris aphylla L. | Accepted |  | iPlants | 
	
		| Iris aphylla subsp. dacica (Beldie) Soó | Synonym |  | iPlants | 
	
		| Iris aphylla subsp. fieberi (Seidl) Dostál | Synonym |  | iPlants | 
	
		| Iris aphylla subsp. hungarica Hegi | Synonym |  | TRO | 
	
		| Iris aphylla f. major (Zapal.) Soó | Synonym |  | iPlants | 
	
		| Iris aphylla subsp. nudicaulis (Lam.) O.Schwarz | Synonym |  | iPlants | 
	
		| Iris aphylla var. polonica Blocki ex Asch. & Graebn. | Synonym |  | iPlants | 
	
		| Iris arctica Eastw. | Synonym |  | iPlants | 
	
		| Iris arenaria Waldst. & Kit. | Synonym |  | iPlants | 
	
		| Iris arenaria subsp. borzaeana Prodán | Synonym |  | iPlants | 
	
		| Iris arenaria subsp. orientalis Lavr. | Synonym |  | TRO | 
	
		| Iris arenaria f. phyllospatha Borbás | Synonym |  | iPlants | 
	
		| Iris argentea auct. | Synonym |  | iPlants | 
	
		| Iris arizonica Dykes | Synonym |  | iPlants | 
	
		| Iris × arnoldiana N.Busch ex Grossh. | Unresolved |  | iPlants | 
	
		| Iris aschersonii Foster | Synonym |  | iPlants | 
	
		| Iris assadiana Chaudhary, G.Kirkw. & C.Weymouth | Accepted |  | iPlants | 
	
		| Iris assyriaca W.Irving | Synonym |  | iPlants | 
	
		| Iris astrachanica Rodion. | Synonym |  | iPlants | 
	
		| Iris athoa Foster | Synonym |  | iPlants | 
	
		| Iris atrocyanea Small | Synonym |  | iPlants | 
	
		| Iris × atroenantha Small | Synonym |  | iPlants | 
	
		| Iris atrofusca Baker | Accepted |  | iPlants | 
	
		| Iris atropatana Grossh. | Accepted |  | iPlants | 
	
		| Iris atropurpurea Baker | Accepted |  | iPlants | 
	
		| Iris atropurpurea var. atrofusca (Baker) | Synonym |  | iPlants | 
	
		| Iris atropurpurea var. gileadensis Dinsm. | Synonym |  | iPlants | 
	
		| Iris atropurpurea var. purpurea Dinsm. | Synonym |  | iPlants | 
	
		| Iris × atroviolacea Lange | Synonym |  | iPlants | 
	
		| Iris attica Boiss. & Heldr. | Synonym |  | iPlants | 
	
		| Iris aucheri (Baker) Sealy | Accepted |  | iPlants | 
	
		| Iris × auralata Small | Synonym |  | iPlants | 
	
		| Iris auranitica Dinsm. | Accepted |  | iPlants | 
	
		| Iris auranitica var. unicolor Mouterde | Synonym |  | iPlants | 
	
		| Iris auranitica f. wilkiana Chaudhary, G.Kirkw. & C.Weymouth | Synonym |  | iPlants | 
	
		| Iris aurea Link | Synonym |  | iPlants | 
	
		| Iris aurea Lindl. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris × aureonympha E.English | Synonym |  | iPlants | 
	
		| Iris aurilinea Alexander | Synonym |  | iPlants | 
	
		| Iris × australis Tod. | Synonym |  | iPlants | 
	
		| Iris × australis var. mandraliscae (Tod.) Nyman | Synonym |  | iPlants | 
	
		| Iris × australis var. tinaei (Tod.) Nyman | Synonym |  | iPlants | 
	
		| Iris × autosyndetica Simonet | Unresolved |  | iPlants | 
	
		| Iris autumnalis Tausch | Synonym |  | iPlants | 
	
		| Iris babadagica Rzazade & Golneva | Synonym |  | iPlants | 
	
		| Iris bakeriana Foster | Synonym |  | iPlants | 
	
		| Iris baldshuanica O.Fedtsch. & B.Fedtsch. | Accepted |  | iPlants | 
	
		| Iris baldshuanica B. Fedtsch. | Synonym |  | TRO | 
	
		| Iris balkana Janka | Synonym |  | iPlants | 
	
		| Iris barbatula Noltie & K.Y.Guan | Accepted |  | iPlants | 
	
		| Iris barnumiae Foster & Baker | Accepted |  | iPlants | 
	
		| Iris barnumiae subsp. demawendica (Bornm.) B.Mathew & Wendelbo | Accepted |  | iPlants | 
	
		| Iris barnumiae var. mariae (Barbey) Dykes | Synonym |  | iPlants | 
	
		| Iris barnumiae f. protonyma (Stapf) B.Mathew & Wendelbo | Accepted |  | iPlants | 
	
		| Iris barnumiae f. urmiensis (Hoog) B.Mathew & Wendelbo | Accepted |  | iPlants | 
	
		| Iris barnumiae var. urmiensis (Hoog) Dykes | Synonym |  | iPlants | 
	
		| Iris barnumiae var. zenobiae Mouterde | Synonym |  | iPlants | 
	
		| Iris × barthii (Prodán & Buia) Prodán & Nyar. | Synonym |  | iPlants | 
	
		| Iris × barthiiformis (Prodán) Prodán & Nyar. | Synonym |  | iPlants | 
	
		| Iris × barthiiformis f. violacea (Prodán) Prodán & Nyar. | Synonym |  | iPlants | 
	
		| Iris bartonii Foster | Synonym |  | iPlants | 
	
		| Iris basaltica Dinsm. | Accepted |  | iPlants | 
	
		| Iris bastardii Boreau | Synonym |  | iPlants | 
	
		| Iris bayonnensis Gren. & Godr. | Synonym |  | iPlants | 
	
		| Iris beecheyana Herb. | Synonym |  | iPlants | 
	
		| Iris × belouinii Bois & Cornuault | Synonym |  | iPlants | 
	
		| Iris benacensis A.Kern. ex Stapf | Synonym |  | iPlants | 
	
		| Iris bicapitata Colas. | Synonym |  | iPlants | 
	
		| Iris bicolor Lindl. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris bicolor Mill. | Synonym |  | iPlants | 
	
		| Iris biflora Falk [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris biflora L. | Synonym |  | iPlants | 
	
		| Iris bifurca Steven ex Baker | Synonym |  | iPlants | 
	
		| Iris × bifurcata Small | Synonym |  | iPlants | 
	
		| Iris biggeri Dinsm. | Synonym |  | iPlants | 
	
		| Iris biglumis Vahl | Synonym |  | iPlants | 
	
		| Iris × biliottii Foster | Synonym |  | iPlants | 
	
		| Iris × binata Schur | Accepted |  | iPlants | 
	
		| Iris × binata f. purpurea Prodán | Synonym |  | iPlants | 
	
		| Iris × binata f. sulphurea Prodán | Synonym |  | iPlants | 
	
		| Iris bisflorens Host | Synonym |  | iPlants | 
	
		| Iris bismarckiana Damman & Sprenger | Accepted |  | iPlants | 
	
		| Iris bispathacea (Sweet) Spach | Synonym |  | iPlants | 
	
		| Iris bituminosa L.f. | Synonym |  | iPlants | 
	
		| Iris bloudowii Ledeb. | Accepted |  | iPlants | 
	
		| Iris bohemica F.W.Schmidt | Synonym |  | iPlants | 
	
		| Iris boissieri Henriq. | Accepted |  | iPlants | 
	
		| Iris bolleana Siehe | Synonym |  | iPlants | 
	
		| Iris boltoniana Schult. | Synonym |  | iPlants | 
	
		| Iris boltoniana Regel [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris × bonstedtii H.R.Wehrh. | Unresolved |  | iPlants | 
	
		| Iris bornmuelleri Hausskn. | Synonym |  | iPlants | 
	
		| Iris × borzae (Prodán) Prodán & Nyar. | Unresolved |  | iPlants | 
	
		| Iris borzaeana (Prodán) Prodán | Synonym |  | iPlants | 
	
		| Iris bosniaca (Beck) Dörfl. | Synonym |  | iPlants | 
	
		| Iris bostrensis Mouterde | Accepted |  | iPlants | 
	
		| Iris brachycuspis Fisch. ex Sims | Synonym |  | iPlants | 
	
		| Iris brachystigma Scheele | Synonym |  | iPlants | 
	
		| Iris bracteata S.Watson | Accepted |  | iPlants | 
	
		| Iris brandzae Prod. | Accepted |  | TRO | 
	
		| Iris brandzae f. topae Prodán | Synonym |  | iPlants | 
	
		| Iris brevicaulis Raf. | Accepted |  | iPlants | 
	
		| Iris brevicaulis f. boonensis (Daniels) R.C.Foster | Synonym |  | iPlants | 
	
		| Iris brevicuspis Fisch. ex Schult. | Synonym |  | iPlants | 
	
		| Iris × brevipes Small | Synonym |  | iPlants | 
	
		| Iris breviscapa Opiz | Synonym |  | iPlants | 
	
		| Iris brevituba (Maxim.) Vved. | Synonym |  | iPlants | 
	
		| Iris × brzhezitzky Grossh. | Accepted |  | iPlants | 
	
		| Iris bucharica Foster | Accepted |  | iPlants | 
	
		| Iris × buiana Prodán | Unresolved |  | iPlants | 
	
		| Iris × buiana var. virescens Prodán | Synonym |  | iPlants | 
	
		| Iris bulleyana Dykes | Accepted |  | iPlants | 
	
		| Iris bulleyana f. alba Y.T.Zhao | Synonym |  | iPlants | 
	
		| Iris bungei Maxim. | Accepted |  | iPlants | 
	
		| Iris burnatii Baker | Synonym |  | iPlants | 
	
		| Iris cabulica Gilli | Accepted |  | iPlants | 
	
		| Iris × cacique (J.Berry) N.C.Hend. | Unresolved |  | iPlants | 
	
		| Iris × caeciliae Grossh. | Accepted |  | iPlants | 
	
		| Iris caeruleoviolacea (Gomb.) Mouterde | Synonym |  | iPlants | 
	
		| Iris × caesia Berg | Unresolved |  | iPlants | 
	
		| Iris caespitosa Pall. ex Link | Synonym |  | iPlants | 
	
		| Iris calabra (N.Terracc.) Peruzzi | Unresolved |  | WCSP (in review) | 
	
		| Iris calcarea Dinsm. | Unresolved |  | TRO | 
	
		| Iris californica Leichtlin [Invalid] | Synonym |  | iPlants | 
	
		| Iris callilopha Alexander | Synonym |  | iPlants | 
	
		| Iris × callirhodea Alexander | Synonym |  | iPlants | 
	
		| Iris camillae Grossh. | Accepted |  | iPlants | 
	
		| Iris canadensis (Foster) Peckham | Synonym |  | iPlants | 
	
		| Iris capensis Burm.f. | Synonym |  | iPlants | 
	
		| Iris capnoides (Vved.) ined. | Accepted |  | iPlants | 
	
		| Iris cardiopetala Borbás | Synonym |  | iPlants | 
	
		| Iris caricifolia Pall. ex Link | Synonym |  | iPlants | 
	
		| Iris caroliniana S.Watson | Synonym |  | iPlants | 
	
		| Iris carterorum B.Mathew & Wendelbo | Accepted |  | iPlants | 
	
		| Iris carthaliniae Fomin | Synonym |  | iPlants | 
	
		| Iris catenulata (Lindl.) Baker | Synonym |  | iPlants | 
	
		| Iris cathayensis Migo | Accepted |  | iPlants | 
	
		| Iris caucasica Hoffm. | Accepted |  | iPlants | 
	
		| Iris caucasica var. bicolor Regel | Synonym |  | iPlants | 
	
		| Iris caucasica var. coerulea Regel | Synonym |  | iPlants | 
	
		| Iris caucasica var. linifolia Regel | Synonym |  | iPlants | 
	
		| Iris caucasica var. major Maxim. | Synonym |  | iPlants | 
	
		| Iris caucasica var. oculata Maxim. | Synonym |  | iPlants | 
	
		| Iris caurina Herb. ex Hook. | Synonym |  | iPlants | 
	
		| Iris cavaleriei H.Lév. | Synonym |  | iPlants | 
	
		| Iris cedreti Dinsm. ex Chaudhary | Accepted |  | iPlants | 
	
		| Iris celikii Akpulat & K.I.Chr. | Accepted |  | iPlants | 
	
		| Iris cengialti Ambrosi ex A.Kern. | Synonym |  | iPlants | 
	
		| Iris cengialti subsp. illyrica (Fiori) Poldini | Synonym |  | iPlants | 
	
		| Iris cengialti var. illyrica (Tomm. ex Vis.) Dykes | Synonym |  | iPlants | 
	
		| Iris cepifolia Stokes | Synonym |  | iPlants | 
	
		| Iris × cerasioides Alexander | Synonym |  | iPlants | 
	
		| Iris chamaeiris Bertol. | Synonym |  | iPlants | 
	
		| Iris chamaeiris subsp. balkana (Janka) K.Richt. | Synonym |  | iPlants | 
	
		| Iris chamaeiris var. italica (Parl.) Baker | Synonym |  | iPlants | 
	
		| Iris chamaeiris subsp. italica (Parl.) K.Richt. | Synonym |  | iPlants | 
	
		| Iris chamaeiris var. olbiensis (Hénon) Baker | Synonym |  | iPlants | 
	
		| Iris chamaeiris subsp. olbiensis (Hénon) K.Richt. | Synonym |  | iPlants | 
	
		| Iris chinensis Curtis | Synonym |  | iPlants | 
	
		| Iris chinensis Bunge [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris × chlorolopha Small | Synonym |  | iPlants | 
	
		| Iris choschab Hoog | Unresolved |  | TRO | 
	
		| Iris chrysaeola Small | Synonym |  | iPlants | 
	
		| Iris chrysantha Baker | Synonym |  | iPlants | 
	
		| Iris chrysographes Dykes | Accepted |  | iPlants | 
	
		| Iris × chrysolopha Small | Synonym |  | iPlants | 
	
		| Iris × chrysophoenicia Small | Synonym |  | iPlants | 
	
		| Iris chrysophylla Howell | Accepted |  | iPlants | 
	
		| Iris ciliata L.f. | Synonym |  | iPlants | 
	
		| Iris citricristata Small | Synonym |  | iPlants | 
	
		| Iris citrina Eastw. | Synonym |  | iPlants | 
	
		| Iris × citriviola Small | Synonym |  | iPlants | 
	
		| Iris clandestina Lehm. | Unresolved |  | iPlants | 
	
		| Iris clarkei Baker ex Hook.f. | Accepted |  | iPlants | 
	
		| Iris clusiana Tausch | Synonym |  | iPlants | 
	
		| Iris clusiana Rchb. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris clusiana var. transsilvanica (Schur) Schur | Synonym |  | iPlants | 
	
		| Iris coerulea Spach | Synonym |  | iPlants | 
	
		| Iris coerulea B.Fedtsch. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris colchica Kem.-Nath. | Accepted |  | iPlants | 
	
		| Iris collettii Hook.f. | Accepted |  | iPlants | 
	
		| Iris collettii var. acaulis Noltie | Accepted |  | iPlants | 
	
		| Iris collettii var. collettii | Accepted |  | iPlants | 
	
		| Iris collina Salisb. | Synonym |  | iPlants | 
	
		| Iris compressa Moench [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris compressa L.f. | Synonym |  | iPlants | 
	
		| Iris compressa Thunb. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris concolor Baker | Synonym |  | iPlants | 
	
		| Iris confusa Sealy | Accepted |  | iPlants | 
	
		| Iris × conglomerata N.C. Hend. | Unresolved |  | TRO | 
	
		| Iris convoluta Raf. | Unresolved |  | iPlants | 
	
		| Iris coronaria Salisb. | Synonym |  | iPlants | 
	
		| Iris × corygei Lynch | Unresolved |  | iPlants | 
	
		| Iris cosniae auct. | Unresolved |  | iPlants | 
	
		| Iris crassifolia Lodd. | Synonym |  | iPlants | 
	
		| Iris cretensis Janka | Synonym |  | iPlants | 
	
		| Iris cretensis f. latifolia Lipsky | Synonym |  | iPlants | 
	
		| Iris cretica Herb. ex Baker [Invalid] | Synonym |  | iPlants | 
	
		| Iris crispa L.f. | Synonym |  | iPlants | 
	
		| Iris cristata Aiton | Accepted |  | iPlants | 
	
		| Iris cristata var. alba Dykes | Synonym |  | iPlants | 
	
		| Iris cristata var. lacustris (Nutt.) Dykes | Synonym |  | iPlants | 
	
		| Iris cristata subsp. lacustris (Nutt.) Iltis | Synonym |  | iPlants | 
	
		| Iris × croatica Prodán | Synonym |  | iPlants | 
	
		| Iris × croatica Horvat & M.D.Horvat [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris crocea Jacquem. ex R.C.Foster | Accepted |  | iPlants | 
	
		| Iris crociformis Freyn | Synonym |  | iPlants | 
	
		| Iris × crocinubia Alexander | Synonym |  | iPlants | 
	
		| Iris cuatrecasasii Font Quer | Synonym |  | iPlants | 
	
		| Iris × cucullata Schur | Unresolved |  | iPlants | 
	
		| Iris cuniculiformis Noltie & K.Y.Guan | Accepted |  | iPlants | 
	
		| Iris cupraea Pursh | Synonym |  | iPlants | 
	
		| Iris curtopetala F.Delaroche | Synonym |  | iPlants | 
	
		| Iris curtopetala F. Delaroche ex Redoute | Synonym |  | TRO | 
	
		| Iris curvifolia Y.T.Zhao | Accepted |  | iPlants | 
	
		| Iris × cyanantha Alexander | Synonym |  | iPlants | 
	
		| Iris × cyanochrysea Small | Synonym |  | iPlants | 
	
		| Iris cycloglossa Wendelbo | Accepted |  | iPlants | 
	
		| Iris × cypriana Foster & Baker | Synonym |  | iPlants | 
	
		| Iris dacica Beldie | Synonym |  | iPlants | 
	
		| Iris daenensis Kotschy ex Baker | Synonym |  | iPlants | 
	
		| Iris dahurica Herb. ex Klatt | Synonym |  | iPlants | 
	
		| Iris daliensis X.D.Dong & Y.T.Zhao | Synonym |  | iPlants | 
	
		| Iris damascena Mouterde | Accepted |  | iPlants | 
	
		| Iris danfordiae (Baker) Boiss. | Accepted |  | iPlants | 
	
		| Iris darwasica Regel | Accepted |  | iPlants | 
	
		| Iris decora Wall. | Accepted |  | iPlants | 
	
		| Iris × deflexa Knowles & Westc. | Synonym |  | iPlants | 
	
		| Iris delavayi Micheli | Accepted |  | iPlants | 
	
		| Iris demavendica Bornm. | Unresolved |  | TRO | 
	
		| Iris demawendica (Bornm.) Dykes | Synonym |  | iPlants | 
	
		| Iris demetrii Achv. & Mirzoeva | Synonym |  | iPlants | 
	
		| Iris dengerensis B.Fedtsch. | Synonym |  | iPlants | 
	
		| Iris desertorum Moench [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris desertorum Gueldenst. | Synonym |  | iPlants | 
	
		| Iris desertorum Balb. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris × dewinkeleri Small | Synonym |  | iPlants | 
	
		| Iris diantha K.Koch | Synonym |  | iPlants | 
	
		| Iris × diantha Schur [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris dichotoma Pall. | Accepted |  | iPlants | 
	
		| Iris dierinckii K.Koch | Synonym |  | iPlants | 
	
		| Iris diluta M.Bieb. | Synonym |  | iPlants | 
	
		| Iris distincta C.E.Lundstr. | Unresolved |  | iPlants | 
	
		| Iris diversifolia Merino [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris diversifolia Steud. ex A.Rich. | Synonym |  | iPlants | 
	
		| Iris doabensis B.Mathew | Accepted |  | iPlants | 
	
		| Iris dolichosiphon Noltie | Accepted |  | iPlants | 
	
		| Iris domestica (L.) Goldblatt & Mabb. | Accepted |  | iPlants | 
	
		| Iris doniana Spach | Synonym |  | iPlants | 
	
		| Iris douglasiana Herb. | Accepted |  | iPlants | 
	
		| Iris douglasiana f. alpha (Dykes) R.C.Foster | Synonym |  | iPlants | 
	
		| Iris douglasiana var. alpha Dykes | Synonym |  | iPlants | 
	
		| Iris douglasiana var. altissima Purdy ex Jeps. | Synonym |  | iPlants | 
	
		| Iris douglasiana var. beecheyana (Herb.) Baker | Synonym |  | iPlants | 
	
		| Iris douglasiana var. bracteata Herb. | Synonym |  | iPlants | 
	
		| Iris douglasiana var. major Torr. | Synonym |  | iPlants | 
	
		| Iris douglasiana var. mendocinensis Eastw. | Synonym |  | iPlants | 
	
		| Iris douglasiana var. nuda Herb. | Synonym |  | iPlants | 
	
		| Iris douglasiana var. oregonensis R.C.Foster | Synonym |  | iPlants | 
	
		| Iris drepanophylla Aitch. & Baker | Accepted |  | iPlants | 
	
		| Iris dubia Poir. | Synonym |  | iPlants | 
	
		| Iris duclouxii H.Lév. | Synonym |  | iPlants | 
	
		| Iris duerinckii Buckley | Synonym |  | iPlants | 
	
		| Iris duthiei Foster | Synonym |  | iPlants | 
	
		| Iris dykesii Stapf | Synonym |  | iPlants | 
	
		| Iris ecristata Alexander | Synonym |  | iPlants | 
	
		| Iris edomensis Sealy | Accepted |  | iPlants | 
	
		| Iris edulis L.f. | Synonym |  | iPlants | 
	
		| Iris elata Piper | Synonym |  | iPlants | 
	
		| Iris elegantissima Sosn. | Synonym |  | iPlants | 
	
		| Iris eleonorae Holmboe | Synonym |  | iPlants | 
	
		| Iris elephantina Small | Synonym |  | iPlants | 
	
		| Iris elisabethae Siehe | Synonym |  | iPlants | 
	
		| Iris elongata Fisch. ex Baker | Synonym |  | iPlants | 
	
		| Iris ensata Thunb. | Accepted |  | iPlants | 
	
		| Iris ensata var. chinensis (Fisch.) Maxim. | Synonym |  | iPlants | 
	
		| Iris ensata var. spontanea (Makino) Nakai | Synonym |  | iPlants | 
	
		| Iris erirrhiza Posp. | Synonym |  | iPlants | 
	
		| Iris erosa Tausch | Unresolved |  | iPlants | 
	
		| Iris erratica Baker [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris erratica Tod. | Synonym |  | iPlants | 
	
		| Iris eulefeldii Regel | Synonym |  | iPlants | 
	
		| Iris ewbankiana Foster | Synonym |  | iPlants | 
	
		| Iris ewbankiana var. elisabethae (Siehe) Dykes | Synonym |  | iPlants | 
	
		| Iris ewbankiana var. lineolata Gawrilenko | Synonym |  | TRO | 
	
		| Iris extrafoliacea J.C.Mikan ex Pohl | Synonym |  | iPlants | 
	
		| Iris extremorientalis Koidz. | Synonym |  | iPlants | 
	
		| Iris falcata Tausch | Synonym |  | iPlants | 
	
		| Iris falcata Babal. & Papan. | Unresolved |  | iPlants | 
	
		| Iris falcifolia Bunge | Accepted |  | iPlants | 
	
		| Iris falconeriana Penny ex Loudon | Synonym |  | iPlants | 
	
		| Iris farreri Dykes | Accepted |  | iPlants | 
	
		| Iris fernaldii R.C.Foster | Accepted |  | iPlants | 
	
		| Iris fibrosa Freyn | Synonym |  | iPlants | 
	
		| Iris fieberi Seidl | Synonym |  | iPlants | 
	
		| Iris filifolia Boiss. | Accepted |  | iPlants | 
	
		| Iris filifolia Bunge [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris fimbriata Vent. | Synonym |  | iPlants | 
	
		| Iris flaccida Spach | Synonym |  | iPlants | 
	
		| Iris flava Tornab. | Synonym |  | iPlants | 
	
		| Iris flavescens Delile | Synonym |  | iPlants | 
	
		| Iris flavissima Pall. | Accepted |  | iPlants | 
	
		| Iris flavissima var. bloudowii (Ledeb.) Baker | Synonym |  | iPlants | 
	
		| Iris flavissima f. orientalis Ugr. | Synonym |  | iPlants | 
	
		| Iris flavissima var. rupestris Bunge | Synonym |  | iPlants | 
	
		| Iris flavissima subsp. transuralensis Ugr. | Synonym |  | iPlants | 
	
		| Iris flavissima var. umbrosa Bunge | Synonym |  | iPlants | 
	
		| Iris × flexicaulis Small | Accepted |  | iPlants | 
	
		| Iris flexuosa Murray | Synonym |  | iPlants | 
	
		| Iris × florentina L. | Synonym |  | iPlants | 
	
		| Iris × florentina var. albicans (Lange) Baker | Synonym |  | iPlants | 
	
		| Iris × florentina subsp. albicans (Lange) K.Richt. | Synonym |  | iPlants | 
	
		| Iris × florentina var. illyrica (Tomm. ex Vis.) Fiori | Synonym |  | iPlants | 
	
		| Iris × florentina var. madonna (Dykes) L.H.Bailey | Synonym |  | iPlants | 
	
		| Iris × florentina var. pallida Nyman | Synonym |  | iPlants | 
	
		| Iris × florentinoides Prodán ex Nyar. | Synonym |  | iPlants | 
	
		| Iris floridana Raf. | Unresolved |  | iPlants | 
	
		| Iris fluviatilis Small | Synonym |  | iPlants | 
	
		| Iris foetida (Medik.) J.P.Bergeret [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris foetida Thunb. | Synonym |  | iPlants | 
	
		| Iris foetidissima L. | Accepted |  | iPlants | 
	
		| Iris foetidissima subsp. lorea (Janka) K.Richt. | Synonym |  | iPlants | 
	
		| Iris foetidissima var. lutescens Maire | Synonym |  | iPlants | 
	
		| Iris foliosa Mack. & Bush | Synonym |  | iPlants | 
	
		| Iris foliosa var. boonensis Daniels | Synonym |  | iPlants | 
	
		| Iris fominii Woronow ex Grossh. | Synonym |  | iPlants | 
	
		| Iris fontanesii Godr. | Synonym |  | iPlants | 
	
		| Iris fontanesii var. mellorii Ingram | Synonym |  | iPlants | 
	
		| Iris formosana Ohwi | Accepted |  | iPlants | 
	
		| Iris forrestii Dykes | Accepted |  | iPlants | 
	
		| Iris fosteriana Aitch. & Baker | Accepted |  | iPlants | 
	
		| Iris fourchiana Small | Synonym |  | iPlants | 
	
		| Iris fragrans Salisb. | Synonym |  | iPlants | 
	
		| Iris fragrans Lindl. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris fugax Pers. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris fugax Ten. | Synonym |  | iPlants | 
	
		| Iris fulgida Berg | Synonym |  | iPlants | 
	
		| Iris fulva Ker Gawl. | Accepted |  | iPlants | 
	
		| Iris × fulvala Dykes | Accepted |  | iPlants | 
	
		| Iris fulvaurea Small | Synonym |  | iPlants | 
	
		| Iris × fumiflora Alexander | Synonym |  | iPlants | 
	
		| Iris × fumifulva Small | Synonym |  | iPlants | 
	
		| Iris fumosa Boiss. & Hausskn. | Synonym |  | iPlants | 
	
		| Iris furcata M.Bieb. | Synonym |  | iPlants | 
	
		| Iris furcata var. diantha (K.Koch) Grossh. | Synonym |  | iPlants | 
	
		| Iris × fuscaurea Small | Synonym |  | iPlants | 
	
		| Iris × fuscirosea Small | Synonym |  | iPlants | 
	
		| Iris × fuscisanguinea Alexander | Synonym |  | iPlants | 
	
		| Iris × fuscivenosa Small | Synonym |  | iPlants | 
	
		| Iris galatica Siehe | Accepted |  | iPlants | 
	
		| Iris gatesii Foster | Accepted |  | iPlants | 
	
		| Iris gawleri F.Delaroche | Synonym |  | iPlants | 
	
		| Iris × geminiflora Besser | Unresolved |  | iPlants | 
	
		| Iris × gentilliana Alexander | Synonym |  | iPlants | 
	
		| Iris georgiana Britton | Synonym |  | iPlants | 
	
		| Iris georgica Gueldenst. | Synonym |  | iPlants | 
	
		| Iris × germanica L. | Accepted |  | iPlants | 
	
		| Iris × germanica var. alba Dykes | Synonym |  | iPlants | 
	
		| Iris × germanica subsp. albicans (Lange) O.Bolòs & Vigo | Synonym |  | iPlants | 
	
		| Iris × germanica var. amas Dykes | Synonym |  | iPlants | 
	
		| Iris × germanica var. askabadensis Dykes | Synonym |  | iPlants | 
	
		| Iris × germanica var. australis (Tod.) Dykes | Synonym |  | iPlants | 
	
		| Iris germanica var. calabra N.Terracc. | Unresolved |  | WCSP (in review) | 
	
		| Iris × germanica var. florentina (L.) Dykes | Synonym |  | iPlants | 
	
		| Iris × germanica var. fontarabie Dykes | Synonym |  | iPlants | 
	
		| Iris × germanica var. gypsea Rodigas | Synonym |  | iPlants | 
	
		| Iris × germanica var. illyrica Fiori | Synonym |  | iPlants | 
	
		| Iris × germanica subsp. illyrica (Tomm. ex Vis.) Nyman | Synonym |  | iPlants | 
	
		| Iris × germanica var. kharput Dykes | Synonym |  | iPlants | 
	
		| Iris × germanica var. lurida (Aiton) Nyman | Synonym |  | iPlants | 
	
		| Iris × germanica var. nepalensis (Wall. ex Lindl.) Herb. | Synonym |  | iPlants | 
	
		| Iris × germanica subsp. pallida (Lam.) O.Bolòs & Vigo | Synonym |  | iPlants | 
	
		| Iris × germanica var. sivas G.Nicholson | Synonym |  | iPlants | 
	
		| Iris × germanica var. suaveolens N.Terracc. | Synonym |  | iPlants | 
	
		| Iris gigantea Carrière | Synonym |  | iPlants | 
	
		| Iris giganticaerulea Small | Accepted |  | iPlants | 
	
		| Iris gileadensis Dinsm. | Unresolved |  | TRO | 
	
		| Iris gilgitensis Baker ex Hook.f. | Synonym |  | iPlants | 
	
		| Iris glauca Salisb. | Synonym |  | iPlants | 
	
		| Iris glaucescens Bunge | Accepted |  | iPlants | 
	
		| Iris glockiana O.Schwarz | Synonym |  | iPlants | 
	
		| Iris gloriosa Reider ex Berg | Synonym |  | iPlants | 
	
		| Iris glumacea Raf. | Synonym |  | iPlants | 
	
		| Iris glumacea var. angustifolia Raf. | Synonym |  | iPlants | 
	
		| Iris gmelinii Ledeb. | Synonym |  | iPlants | 
	
		| Iris goniocarpa Baker | Accepted |  | iPlants | 
	
		| Iris goniocarpa var. grossa Y.T.Zhao | Synonym |  | iPlants | 
	
		| Iris goniocarpa var. tenella Y.T.Zhao | Synonym |  | iPlants | 
	
		| Iris × goosiana H.R.Wehrh. | Unresolved |  | iPlants | 
	
		| Iris gormanii Piper | Synonym |  | iPlants | 
	
		| Iris graberana Sealy | Unresolved |  | TRO | 
	
		| Iris gracilipes Pamp. | Synonym |  | iPlants | 
	
		| Iris gracilipes A.Gray | Accepted |  | iPlants | 
	
		| Iris gracilis Maxim. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris gracilis Licht. ex Roem. & Schult. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris gracilis Bigelow | Synonym |  | iPlants | 
	
		| Iris gracilis Berg [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris graeberiana Sealy | Accepted |  | iPlants | 
	
		| Iris graminea L. | Accepted |  | iPlants | 
	
		| Iris graminea Thunb. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris graminea (Janka) K. Richt. | Synonym |  | TRO | 
	
		| Iris graminea var. bayonnensis (Gren. & Godr.) Nyman | Synonym |  | iPlants | 
	
		| Iris graminea var. latifolia Spach | Synonym |  | iPlants | 
	
		| Iris graminea var. pseudocyperus Beck | Synonym |  | iPlants | 
	
		| Iris graminea var. sintenisii (Janka) K.Richt. | Synonym |  | iPlants | 
	
		| Iris graminea subsp. sintenisii (Janka) K.Richt. | Synonym |  | iPlants | 
	
		| Iris graminea var. sylvatica (Balb. ex Roem. & Schult.) Nyman | Synonym |  | iPlants | 
	
		| Iris graminea subsp. sylvatica (Balb. ex Roem. & Schult.) K.Richt. | Synonym |  | iPlants | 
	
		| Iris × graminiflora Ledeb. [Spelling variant] | Synonym |  | iPlants | 
	
		| Iris graminifolia Freyn [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris graminifolia Pall. | Unresolved |  | iPlants | 
	
		| Iris grandiflora Salisb. | Synonym |  | iPlants | 
	
		| Iris grandis Velen. | Unresolved |  | iPlants | 
	
		| Iris grant-duffii Baker | Accepted |  | iPlants | 
	
		| Iris grant-duffii var. caeruleoviolacea Gomb. | Synonym |  | iPlants | 
	
		| Iris grant-duffii subsp. masia (Foster) Dykes | Synonym |  | iPlants | 
	
		| Iris griffithii Baker | Accepted |  | iPlants | 
	
		| Iris grijsii Maxim. | Synonym |  | iPlants | 
	
		| Iris grossheimii Woronow ex Grossh. | Accepted |  | iPlants | 
	
		| Iris gueldenstadtiana Lepech. | Synonym |  | iPlants | 
	
		| Iris gueldenstadtiana var. notha (M.Bieb.) Regel | Synonym |  | iPlants | 
	
		| Iris gueldenstadtiana var. sogdiana (Bunge) Maxim. | Synonym |  | iPlants | 
	
		| Iris gueldenstadtiana subsp. subbarbata (Joó) Nyman | Synonym |  | iPlants | 
	
		| Iris × guertleri (Prodán) Prodán | Synonym |  | iPlants | 
	
		| Iris guertleri var. moldavica (Prodán) Prodán | Synonym |  | iPlants | 
	
		| Iris guldenstaedtiana Lepech. | Synonym |  | TRO | 
	
		| Iris habaensis X.D.Dong | Unresolved |  | iPlants | 
	
		| Iris haematophylla Fisch. ex Link | Synonym |  | iPlants | 
	
		| Iris haematophylla Fisch. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris haematophylla var. valametica Herb. ex Hook. | Synonym |  | iPlants | 
	
		| Iris halophila Pall. | Accepted |  | iPlants | 
	
		| Iris halophila var. halophila | Accepted |  | iPlants | 
	
		| Iris halophila var. sogdiana (Bunge) Grubov | Accepted |  | iPlants | 
	
		| Iris hartwegii Baker | Accepted |  | iPlants | 
	
		| Iris hartwegii subsp. australis (Parish) L.W.Lenz | Synonym |  | iPlants | 
	
		| Iris hartwegii var. australis Parish | Synonym |  | iPlants | 
	
		| Iris hartwegii subsp. columbiana L.W.Lenz | Synonym |  | iPlants | 
	
		| Iris hartwegii subsp. pinetorum (Eastw.) L.W.Lenz | Synonym |  | iPlants | 
	
		| Iris hauranensis Dinsm. | Synonym |  | iPlants | 
	
		| Iris haussknechtii Siehe [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris haussknechtii Bornm. ex Baker | Synonym |  | iPlants | 
	
		| Iris haynei Baker | Accepted |  | iPlants | 
	
		| Iris heldreichii Siehe | Synonym |  | iPlants | 
	
		| Iris helena K.Koch | Synonym |  | iPlants | 
	
		| Iris helena C. Koch | Accepted |  | TRO | 
	
		| Iris helenae Barbey ex Boiss. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris henryi Baker | Accepted |  | iPlants | 
	
		| Iris hermona Dinsm. | Accepted |  | iPlants | 
	
		| Iris heterophylla Spreng. | Synonym |  | iPlants | 
	
		| Iris heterophylla Merino [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris heweri Grey-Wilson & B.Mathew | Accepted |  | iPlants | 
	
		| Iris hexagona Walter | Accepted |  | iPlants | 
	
		| Iris hexagona var. flexicaulis (Small) R.C.Foster | Synonym |  | iPlants | 
	
		| Iris hexagona var. giganticaerulea (Small) R.C.Foster | Synonym |  | iPlants | 
	
		| Iris hexagona var. lamancei J.N.Gerard | Synonym |  | iPlants | 
	
		| Iris hexagona var. savannarum (Small) R.C.Foster | Synonym |  | iPlants | 
	
		| Iris heylandiana Boiss. & Reut. | Accepted |  | iPlants | 
	
		| Iris himalaica Dykes | Synonym |  | iPlants | 
	
		| Iris hippolyti (Vved.) Kamelin | Accepted |  | iPlants | 
	
		| Iris hirsuta Licht. ex Roem. & Schult. | Synonym |  | iPlants | 
	
		| Iris hispanica Steud. | Synonym |  | iPlants | 
	
		| Iris hissarica O.Fedtsch. ex Kneuck. | Synonym |  | iPlants | 
	
		| Iris histrio Rchb.f. | Accepted |  | iPlants | 
	
		| Iris histrio subsp. aintabensis (G.P.Baker) B.Mathew | Synonym |  | iPlants | 
	
		| Iris histrio var. aintabensis G.P.Baker | Synonym |  | iPlants | 
	
		| Iris histrio var. atropurpurea (Dykes) Dykes | Synonym |  | iPlants | 
	
		| Iris histrioides (G.F.Wilson) S.Arn. | Accepted |  | iPlants | 
	
		| Iris histrioides var. sophenensis (Foster) Dykes | Synonym |  | iPlants | 
	
		| Iris hoogiana Dykes | Accepted |  | iPlants | 
	
		| Iris hookeri Penny ex G.Don | Accepted |  | iPlants | 
	
		| Iris hookeri f. pallidiflora (Fernald) Fernald | Synonym |  | iPlants | 
	
		| Iris hookeri f. zonalis (Eames) Fernald | Synonym |  | iPlants | 
	
		| Iris hookeriana Foster | Accepted |  | iPlants | 
	
		| Iris hortensis Tausch | Synonym |  | iPlants | 
	
		| Iris humboldtiana Eastw. | Synonym |  | iPlants | 
	
		| Iris × humei G.Don | Synonym |  | iPlants | 
	
		| Iris humilis Georgi | Accepted |  | iPlants | 
	
		| Iris humilis Sieber ex Baker [Invalid] | Synonym |  | iPlants | 
	
		| Iris humilis Schur [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris humilis M.Bieb. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris humilis subsp. arenaria (Waldst. & Kit.) Á.Löve & D.Löve | Synonym |  | iPlants | 
	
		| Iris humilis var. borzaeana (Prodán) Soó | Synonym |  | iPlants | 
	
		| Iris humilis subsp. cretensis (Janka) Nyman | Synonym |  | iPlants | 
	
		| Iris humilis f. foliata Kuntze | Synonym |  | iPlants | 
	
		| Iris humilis subsp. orientalis (Ugr.) Soó | Synonym |  | iPlants | 
	
		| Iris humilis f. phyllospatha (Borbás) Soó | Synonym |  | iPlants | 
	
		| Iris humilis var. pontica Prod. | Synonym |  | TRO | 
	
		| Iris hungarica Waldst. & Kit. | Synonym |  | iPlants | 
	
		| Iris hungarica subsp. dacica (Beldie) Prodán | Synonym |  | iPlants | 
	
		| Iris hungarica f. minor Simonk. | Synonym |  | iPlants | 
	
		| Iris hungarica var. subtriflora (Fieber ex Klatt) Nyman | Synonym |  | iPlants | 
	
		| Iris × hybrida Retz. | Unresolved |  | iPlants | 
	
		| Iris hymenospatha B.Mathew & Wendelbo | Accepted |  | iPlants | 
	
		| Iris hyrcana Woronow ex Grossh. | Synonym |  | iPlants | 
	
		| Iris × ianthina Alexander | Synonym |  | iPlants | 
	
		| Iris iberica Steven | Accepted |  | iPlants | 
	
		| Iris iberica var. bellii Baker | Synonym |  | iPlants | 
	
		| Iris iberica subsp. elegantissima (Sosn.) Fed. & Takht. | Accepted |  | iPlants | 
	
		| Iris iberica subsp. iberica | Accepted |  | iPlants | 
	
		| Iris iberica subsp. lycotis (Woronow) Takht. | Accepted |  | iPlants | 
	
		| Iris iliensis Poljakov | Synonym |  | iPlants | 
	
		| Iris illyrica Tomm. ex Vis. | Synonym |  | iPlants | 
	
		| Iris imberbis Ker Gawl. | Synonym |  | iPlants | 
	
		| Iris imbricata Lindl. | Accepted |  | iPlants | 
	
		| Iris innominata L.F.Hend. | Accepted |  | iPlants | 
	
		| Iris × intercedens Negodi | Unresolved |  | iPlants | 
	
		| Iris interior (E.S.Anderson) Czerep. | Synonym |  | iPlants | 
	
		| Iris intermedia | Unresolved |  | TRO | 
	
		| Iris involuta Garzia | Synonym |  | iPlants | 
	
		| Iris × iochroma Small | Synonym |  | iPlants | 
	
		| Iris × iocyanea Small | Synonym |  | iPlants | 
	
		| Iris × iodantha Alexander | Synonym |  | iPlants | 
	
		| Iris × ioleuca Alexander | Synonym |  | iPlants | 
	
		| Iris × iophaea Alexander | Synonym |  | iPlants | 
	
		| Iris issica Siehe | Synonym |  | iPlants | 
	
		| Iris italica Parl. | Synonym |  | iPlants | 
	
		| Iris italica var. cengialti (Ambrosi ex A.Kern.) Nyman | Synonym |  | iPlants | 
	
		| Iris itsihatsi Hassk. | Synonym |  | iPlants | 
	
		| Iris ivanovae Doronkin | Accepted |  | iPlants | 
	
		| Iris iyoana Makino | Synonym |  | iPlants | 
	
		| Iris japonica Thunb. | Accepted |  | iPlants | 
	
		| Iris japonica f. pallescens P.L.Chiu & Y.T.Zhao | Synonym |  | iPlants | 
	
		| Iris jordana Dinsm. | Synonym |  | iPlants | 
	
		| Iris juncea Poir. | Accepted |  | iPlants | 
	
		| Iris juncifolia Pall. | Unresolved |  | iPlants | 
	
		| Iris junonia Schott | Accepted |  | iPlants | 
	
		| Iris kaempferi Siebold ex Lem. | Synonym |  | iPlants | 
	
		| Iris kaempferi var. hortensis (Maxim.) Makino | Synonym |  | iPlants | 
	
		| Iris kaempferi var. spontanea Makino | Synonym |  | iPlants | 
	
		| Iris kamaonensis Wall. [Invalid] | Synonym |  | iPlants | 
	
		| Iris kamayama Makino | Synonym |  | iPlants | 
	
		| Iris kamelinii Alexeeva | Accepted |  | iPlants | 
	
		| Iris karategina B.Fedtsch. | Synonym |  | iPlants | 
	
		| Iris × karjaginii Grossh. | Unresolved |  | iPlants | 
	
		| Iris kashmiriana Baker | Accepted |  | iPlants | 
	
		| Iris kasruwana Dinsm. | Synonym |  | iPlants | 
	
		| Iris kemaonensis Wall. ex D.Don | Accepted |  | iPlants | 
	
		| Iris kemaonensis var. caulescens Baker | Synonym |  | iPlants | 
	
		| Iris keredjensis Parsa | Unresolved |  | iPlants | 
	
		| Iris kerneriana Asch. & Sint. ex Baker | Accepted |  | iPlants | 
	
		| Iris kimballiae Small | Synonym |  | iPlants | 
	
		| Iris kingiana Foster | Synonym |  | iPlants | 
	
		| Iris kirkwoodiae Chaudhary | Accepted |  | iPlants | 
	
		| Iris kirkwoodiae subsp. kirkwoodiae | Accepted |  | iPlants | 
	
		| Iris kirkwoodiae var. macrotepala Chaudhary, G.Kirkw. & C.Weymouth | Synonym |  | iPlants | 
	
		| Iris klattii Kem.-Nath. | Synonym |  | iPlants | 
	
		| Iris × kobasensis Prodán | Accepted |  | iPlants | 
	
		| Iris kobayashii Kitag. | Accepted |  | iPlants | 
	
		| Iris × kochii A.Kern. ex Stapf | Unresolved |  | iPlants | 
	
		| Iris × koenigii Sosn. | Accepted |  | iPlants | 
	
		| Iris kolpakowskiana Regel | Accepted |  | iPlants | 
	
		| Iris kopetdagensis (Vved.) B.Mathew & Wendelbo | Accepted |  | iPlants | 
	
		| Iris kopetdagensis Mathew & Wendelbo | Synonym |  | TRO | 
	
		| Iris koreana Nakai | Accepted |  | iPlants | 
	
		| Iris koreana f. albiflora T.H.Chung & T.Lee | Synonym |  | iPlants | 
	
		| Iris korolkowii Regel | Accepted |  | iPlants | 
	
		| Iris korolkowii var. concolor Foster | Synonym |  | iPlants | 
	
		| Iris korolkowii var. leichtliniana Foster | Synonym |  | iPlants | 
	
		| Iris korolkowii var. venosa Foster | Synonym |  | iPlants | 
	
		| Iris korolkowii var. violacea Foster | Synonym |  | iPlants | 
	
		| Iris kumasnensis Wall. | Unresolved |  | TRO | 
	
		| Iris kuschakewiczii B.Fedtsch. | Accepted |  | iPlants | 
	
		| Iris kuschkensis Grey-Wilson & B.Mathew | Accepted |  | iPlants | 
	
		| Iris lacera Lam. | Synonym |  | iPlants | 
	
		| Iris × laciniata Berg | Synonym |  | iPlants | 
	
		| Iris lactea Pall. | Accepted |  | iPlants | 
	
		| Iris lactea var. chinensis (Fisch.) Koidz. | Synonym |  | iPlants | 
	
		| Iris lactea subsp. chinensis (Fisch.) Kitag. | Synonym |  | iPlants | 
	
		| Iris lactea var. lactea | Accepted |  | iPlants | 
	
		| Iris lacustris Nutt. | Accepted |  | iPlants | 
	
		| Iris lacustris f. albiflora Cruise & Catling | Synonym |  | iPlants | 
	
		| Iris laevigata Fisch. | Accepted |  | iPlants | 
	
		| Iris laevigata var. hortensis Maxim. | Synonym |  | iPlants | 
	
		| Iris laevigata var. kaempferi (Siebold ex Lem.) Maxim. | Synonym |  | iPlants | 
	
		| Iris laevigata f. leucanthum Makino | Synonym |  | iPlants | 
	
		| Iris lamancei (J.N.Gerard) Lynch | Synonym |  | iPlants | 
	
		| Iris lamprophylla Lange | Synonym |  | iPlants | 
	
		| Iris × lancipetala Alexander | Synonym |  | iPlants | 
	
		| Iris lansdaleana Eastw. | Synonym |  | iPlants | 
	
		| Iris × latifolia Gilib. [Invalid] | Synonym |  | iPlants | 
	
		| Iris latifolia (Mill.) Voss | Accepted |  | iPlants | 
	
		| Iris latistyla Y.T.Zhao | Accepted |  | iPlants | 
	
		| Iris lazica Albov | Accepted |  | iPlants | 
	
		| Iris leichtlinii Regel | Synonym |  | iPlants | 
	
		| Iris lepida Heuff. | Synonym |  | iPlants | 
	
		| Iris leptophylla Lingelsh. ex H.Limpr. | Accepted |  | iPlants | 
	
		| Iris leptorhiza (Vved.) Vved. | Accepted |  | iPlants | 
	
		| Iris leucographa A.Kern. | Synonym |  | iPlants | 
	
		| Iris libani Reut. ex Baker | Synonym |  | iPlants | 
	
		| Iris libyca Mattei | Synonym |  | iPlants | 
	
		| Iris × lilacinaurea Alexander | Synonym |  | iPlants | 
	
		| Iris limbata Besser ex Steud. | Synonym |  | iPlants | 
	
		| Iris lineata Foster ex Regel | Accepted |  | iPlants | 
	
		| Iris lineolata (Trautv.) Grossh. | Synonym |  | iPlants | 
	
		| Iris linifolia (Regel) O.Fedtsch. | Accepted |  | iPlants | 
	
		| Iris lisbonensis Dykes | Synonym |  | iPlants | 
	
		| Iris livida James Booth ex Berg [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris livida Tratt. | Synonym |  | iPlants | 
	
		| Iris loczyi Kanitz | Accepted |  | iPlants | 
	
		| Iris loessicola Kushnir | Synonym |  | iPlants | 
	
		| Iris longiflora Vest ex Schult. | Synonym |  | iPlants | 
	
		| Iris longiflora Ledeb. | Synonym |  | iPlants | 
	
		| Iris longifolia Royle [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris longifolia Schneev. | Synonym |  | iPlants | 
	
		| Iris longifolia (Sweet) Spach [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris longipedicellata Czeczott | Synonym |  | iPlants | 
	
		| Iris longipetala Herb. | Accepted |  | iPlants | 
	
		| Iris longipetala var. montana Baker | Synonym |  | iPlants | 
	
		| Iris longiscapa Ledeb. | Accepted |  | iPlants | 
	
		| Iris longispatha Fisch. ex Sims | Synonym |  | iPlants | 
	
		| Iris lorea Janka | Synonym |  | iPlants | 
	
		| Iris lortetii Barbey ex Boiss. | Accepted |  | iPlants | 
	
		| Iris lortetii var. samariae (Dinsm.) Feinbrun | Accepted |  | iPlants | 
	
		| Iris × louisianica N.C.Hend. [Invalid] | Synonym |  | iPlants | 
	
		| Iris × ludoviciana Small | Synonym |  | iPlants | 
	
		| Iris ludwigii Maxim. | Accepted |  | iPlants | 
	
		| Iris × lundstroemii Fedde | Unresolved |  | iPlants | 
	
		| Iris lupina Foster | Synonym |  | iPlants | 
	
		| Iris × lurida Aiton | Synonym |  | iPlants | 
	
		| Iris lusitanica Ker Gawl. | Accepted |  | iPlants | 
	
		| Iris lusitanica var. sordida (Salisb.) Nyman | Synonym |  | iPlants | 
	
		| Iris lutea Lam. | Synonym |  | iPlants | 
	
		| Iris lutescens Lam. | Accepted |  | iPlants | 
	
		| Iris lutescens Guss. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris lutescens subsp. chamaeiris (Bertol.) O.Bolòs & Vigo | Synonym |  | iPlants | 
	
		| Iris lutescens f. crocea O.Bolòs & Vigo | Synonym |  | iPlants | 
	
		| Iris lutescens subsp. lutescens | Accepted |  | iPlants | 
	
		| Iris lutescens subsp. segarrica O.Bolòs & Conesa | Synonym |  | iPlants | 
	
		| Iris lutescens var. statellae (Tod.) Baker | Synonym |  | iPlants | 
	
		| Iris lutescens subsp. subbiflora (Brot.) D.A.Webb & Chater | Accepted |  | iPlants | 
	
		| Iris lutescens f. violacea (Rouy) O.Bolòs & Vigo | Synonym |  | iPlants | 
	
		| Iris lycotis Woron. | Accepted |  | TRO | 
	
		| Iris maackii Maxim. | Synonym |  | iPlants | 
	
		| Iris × macrantha Simonet | Synonym |  | iPlants | 
	
		| Iris macrosiphon Torr. | Accepted |  | iPlants | 
	
		| Iris macrosiphon var. elata Eastw. | Synonym |  | iPlants | 
	
		| Iris macrosiphon var. purdyi (Eastw.) Jeps. | Synonym |  | iPlants | 
	
		| Iris maculata Tod. ex Lojac. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris maculata Baker | Synonym |  | iPlants | 
	
		| Iris madonna Sprenger | Synonym |  | iPlants | 
	
		| Iris magnifica Vved. | Accepted |  | iPlants | 
	
		| Iris majoricensis Barceló | Synonym |  | iPlants | 
	
		| Iris mandraliscae Tod. | Synonym |  | iPlants | 
	
		| Iris mandraliscae Tineo ex Tornab. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris mandshurica Maxim. | Accepted |  | iPlants | 
	
		| Iris mangaliae Prodán | Synonym |  | iPlants | 
	
		| Iris manissadjianii Freyn | Synonym |  | iPlants | 
	
		| Iris maracandica (Vved.) Wendelbo | Accepted |  | iPlants | 
	
		| Iris marchesettii Pamp. | Synonym |  | iPlants | 
	
		| Iris mariae Barbey | Accepted |  | iPlants | 
	
		| Iris maricoides Regel | Synonym |  | iPlants | 
	
		| Iris maritima Mill. | Synonym |  | iPlants | 
	
		| Iris maritima Lam. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris × marplei Alexander | Synonym |  | iPlants | 
	
		| Iris marschalliana Bobrov | Synonym |  | iPlants | 
	
		| Iris marsica I.Ricci & Colas. | Accepted |  | iPlants | 
	
		| Iris martinicensis Jacq. | Synonym |  | iPlants | 
	
		| Iris masia Dykes [Spelling variant] | Synonym |  | iPlants | 
	
		| Iris masiae Foster | Accepted |  | iPlants | 
	
		| Iris × matthiolii Tausch | Unresolved |  | iPlants | 
	
		| Iris mauritanica Ker Gawl. | Synonym |  | iPlants | 
	
		| Iris maximowiczii Grubov | Synonym |  | iPlants | 
	
		| Iris meda Stapf | Accepted |  | iPlants | 
	
		| Iris medwedewii Fomin | Synonym |  | iPlants | 
	
		| Iris melaina H.R.Wehrh. | Synonym |  | iPlants | 
	
		| Iris melanosticta Bornm. | Synonym |  | iPlants | 
	
		| Iris mellita Janka | Synonym |  | iPlants | 
	
		| Iris melzeri Prodán | Synonym |  | iPlants | 
	
		| Iris × mesopotamica Dykes | Synonym |  | iPlants | 
	
		| Iris microglossa Wendelbo | Accepted |  | iPlants | 
	
		| Iris microptera Vahl | Synonym |  | iPlants | 
	
		| Iris milesii Baker ex Foster | Accepted |  | iPlants | 
	
		| Iris minima Vest | Unresolved |  | iPlants | 
	
		| Iris minuta Franch. & Sav. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris minuta L.f. | Synonym |  | iPlants | 
	
		| Iris minutoaurea Makino | Accepted |  | iPlants | 
	
		| Iris mirabilis Gaw. | Unresolved |  | TRO | 
	
		| Iris miraculosa Small | Synonym |  | iPlants | 
	
		| Iris mississippiensis Alexander | Synonym |  | iPlants | 
	
		| Iris missouriensis Nutt. | Accepted |  | iPlants | 
	
		| Iris missouriensis f. alba H.St.John | Synonym |  | iPlants | 
	
		| Iris missouriensis var. albiflora Cockerell | Synonym |  | iPlants | 
	
		| Iris missouriensis f. angustispatha R.C.Foster | Synonym |  | iPlants | 
	
		| Iris missouriensis var. arizonica (Dykes) R.C.Foster | Synonym |  | iPlants | 
	
		| Iris missouriensis var. pelogonus (Goodd.) R.C.Foster | Synonym |  | iPlants | 
	
		| Iris missuriensis M.Martens | Synonym |  | iPlants | 
	
		| Iris moggridgei Baker | Synonym |  | iPlants | 
	
		| Iris monnieri DC. | Synonym |  | iPlants | 
	
		| Iris monophylla (Klatt) Boiss. & Heldr. | Synonym |  | iPlants | 
	
		| Iris montana Nutt. ex Dykes | Synonym |  | iPlants | 
	
		| Iris moorcroftiana Wall. ex D.Don | Synonym |  | iPlants | 
	
		| Iris moraeoides Ker Gawl. | Synonym |  | iPlants | 
	
		| Iris × moricolor Small | Synonym |  | iPlants | 
	
		| Iris multiflora V.J.Zinger | Synonym |  | iPlants | 
	
		| Iris munzii R.C.Foster | Accepted |  | iPlants | 
	
		| Iris × murorum Gaterau | Synonym |  | iPlants | 
	
		| Iris musulmanica Fomin | Synonym |  | iPlants | 
	
		| Iris mutila Licht. ex Roem. & Schult. | Synonym |  | iPlants | 
	
		| Iris myleri K.Koch | Synonym |  | iPlants | 
	
		| Iris mzchetica Rodion. | Accepted |  | iPlants | 
	
		| Iris nana (Maxim.) Nakai [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris nana Pers. | Synonym |  | iPlants | 
	
		| Iris napocae Prodán [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris napocae var. macrocarpa (Prodán) Prodán | Synonym |  | iPlants | 
	
		| Iris narbutii O.Fedtsch. | Accepted |  | iPlants | 
	
		| Iris narcissiflora Diels | Accepted |  | iPlants | 
	
		| Iris narynensis O.Fedtsch. | Accepted |  | iPlants | 
	
		| Iris nazerena (Foster) Dinsm. | Synonym |  | iPlants | 
	
		| Iris nectarifera Güner | Accepted |  | iPlants | 
	
		| Iris × neglecta Hornem. | Synonym |  | iPlants | 
	
		| Iris neglecta Parl. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris × nelsonii Randolph | Accepted |  | iPlants | 
	
		| Iris neoensata Y.N.Lee | Accepted |  | iPlants | 
	
		| Iris neosetosa Y.N.Lee | Accepted |  | iPlants | 
	
		| Iris × nepalensis Wall. ex Lindl. | Synonym |  | iPlants | 
	
		| Iris nepalensis D.Don [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris nepalensis f. depauperata Collett & Hemsl. | Synonym |  | iPlants | 
	
		| Iris nepalensis var. khasiana Baker | Synonym |  | iPlants | 
	
		| Iris nepalensis var. letha Foster | Synonym |  | iPlants | 
	
		| Iris nertschinskia Lodd. | Synonym |  | iPlants | 
	
		| Iris nertschinskia var. pumila Makino | Synonym |  | iPlants | 
	
		| Iris × neumayeri Janch. ex Holub | Accepted |  | iPlants | 
	
		| Iris nezahatiae Güner & H.Duman | Accepted |  | iPlants | 
	
		| Iris nicolai (Vved.) Vved. | Accepted |  | iPlants | 
	
		| Iris nigricans Dinsm. | Accepted |  | iPlants | 
	
		| Iris nikitensis Lange | Synonym |  | iPlants | 
	
		| Iris northiana (Schneev.) Pers. | Synonym |  | iPlants | 
	
		| Iris × nostras Garsault [Invalid] | Synonym |  | iPlants | 
	
		| Iris notha M.Bieb. | Synonym |  | iPlants | 
	
		| Iris nudicaulis Lam. | Synonym |  | iPlants | 
	
		| Iris nudicaulis var. clusiana (Tausch) Nyman | Synonym |  | iPlants | 
	
		| Iris nudicaulis subsp. fieberi (Seidl) Nyman | Synonym |  | iPlants | 
	
		| Iris nusairiensis Mouterde | Accepted |  | iPlants | 
	
		| Iris × nyaradyana Prodán | Synonym |  | iPlants | 
	
		| Iris obtusifolia Baker | Synonym |  | iPlants | 
	
		| Iris ochroleuca L. | Synonym |  | iPlants | 
	
		| Iris odaesanensis Y.N.Lee | Accepted |  | iPlants | 
	
		| Iris odaesanensis f. purpurascens Y.N.Lee | Synonym |  | iPlants | 
	
		| Iris odontostyla B.Mathew & Wendelbo | Accepted |  | iPlants | 
	
		| Iris odorata Pers. | Synonym |  | iPlants | 
	
		| Iris odoratissima Jacq. | Synonym |  | iPlants | 
	
		| Iris × oenantha Small | Synonym |  | iPlants | 
	
		| Iris × officinalis Salisb. | Synonym |  | iPlants | 
	
		| Iris olbiensis Hénon | Synonym |  | iPlants | 
	
		| Iris × oolopha Alexander | Synonym |  | iPlants | 
	
		| Iris orchioides Carrière | Accepted |  | iPlants | 
	
		| Iris orchioides var. coerulea Baker | Synonym |  | iPlants | 
	
		| Iris orientalis Mill. | Accepted |  | iPlants | 
	
		| Iris orientalis Thunb. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris orjenii Bräuchler & Cikovac | Accepted |  | iPlants | 
	
		| Iris oxypetala C.A.Mey. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris oxypetala Bunge | Synonym |  | iPlants | 
	
		| Iris × pacifica Ghio | Unresolved |  | TRO | 
	
		| Iris palaestina (Baker) Boiss. | Accepted |  | iPlants | 
	
		| Iris pallasii Fisch. ex Trev. | Accepted |  | TRO | 
	
		| Iris pallasii var. chinensis Fisch. | Synonym |  | iPlants | 
	
		| Iris pallida Lam. | Accepted |  | iPlants | 
	
		| Iris × pallida Ten. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris pallida Salisb. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris pallida subsp. australis (Tod.) K.Richt. | Synonym |  | iPlants | 
	
		| Iris pallida subsp. cengialti (Ambrosi ex A.Kern.) Foster | Accepted |  | iPlants | 
	
		| Iris pallida var. cucullata (Schur) Nyman | Synonym |  | iPlants | 
	
		| Iris pallida subsp. cucullata (Schur) K.Richt. | Synonym |  | iPlants | 
	
		| Iris pallida var. dalmatica Pamp. | Synonym |  | iPlants | 
	
		| Iris pallida subsp. illyrica (Tomm. ex Vis.) K.Richt. | Accepted |  | iPlants | 
	
		| Iris pallida f. illyrica Asch. & Graebn. | Synonym |  | TRO | 
	
		| Iris pallida subsp. mandraliscae (Tod.) K.Richt. | Synonym |  | iPlants | 
	
		| Iris pallida var. odoratissima (Jacq.) Nyman | Synonym |  | iPlants | 
	
		| Iris pallida subsp. pallida | Accepted |  | iPlants | 
	
		| Iris pallida var. rosea Prodán | Synonym |  | iPlants | 
	
		| Iris pallida subsp. sicula (Tod.) K.Richt. | Synonym |  | iPlants | 
	
		| Iris pallida subsp. tinaei (Tod.) K.Richt. | Synonym |  | iPlants | 
	
		| Iris pallidecaerulaea Pers. | Synonym |  | iPlants | 
	
		| Iris pallidior Hill | Synonym |  | iPlants | 
	
		| Iris × pallidirosea Alexander | Synonym |  | iPlants | 
	
		| Iris × paludicola Alexander | Synonym |  | iPlants | 
	
		| Iris paludosa Pers. | Synonym |  | iPlants | 
	
		| Iris palustris Gaterau [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris palustris Moench [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris pamphylica Hedge | Accepted |  | iPlants | 
	
		| Iris pandurata Maxim. | Synonym |  | iPlants | 
	
		| Iris panormitana Tod. | Synonym |  | iPlants | 
	
		| Iris papilionacea L.f. | Synonym |  | iPlants | 
	
		| Iris paradoxa Steven | Accepted |  | iPlants | 
	
		| Iris paradoxa f. choschab (Hoog) B.Mathew & Wendelbo | Accepted |  | iPlants | 
	
		| Iris paradoxa var. choschab Hoog | Synonym |  | iPlants | 
	
		| Iris paradoxa f. paradoxa | Accepted |  | iPlants | 
	
		| Iris paradoxa var. violacea Baker | Synonym |  | iPlants | 
	
		| Iris pariensis S.L.Welsh | Synonym |  | iPlants | 
	
		| Iris × parkor Foster | Unresolved |  | iPlants | 
	
		| Iris × parvicaerulea Alexander | Synonym |  | iPlants | 
	
		| Iris × parvirosea Small | Synonym |  | iPlants | 
	
		| Iris parvula (Vved.) ined. | Accepted |  | iPlants | 
	
		| Iris pavonia L.f. | Synonym |  | iPlants | 
	
		| Iris pavonia Curtis [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris pedunculata Medik. | Unresolved |  | iPlants | 
	
		| Iris pelogonus Goodd. | Synonym |  | iPlants | 
	
		| Iris perrieri Simonet ex N.Service | Synonym |  | iPlants | 
	
		| Iris persica L. | Accepted |  | iPlants | 
	
		| Iris persica var. bolleana (Siehe) Dykes | Synonym |  | iPlants | 
	
		| Iris persica var. galatica (Siehe) Dykes | Synonym |  | iPlants | 
	
		| Iris persica var. isaacsonii Foster | Synonym |  | iPlants | 
	
		| Iris persica var. issica (Siehe) Dykes | Synonym |  | iPlants | 
	
		| Iris persica var. purpurea (Siehe) Dykes | Synonym |  | iPlants | 
	
		| Iris persica f. sieheana (Lynch) B.Mathew & Wendelbo | Synonym |  | iPlants | 
	
		| Iris persica var. sieheana (Lynch) Dykes | Synonym |  | iPlants | 
	
		| Iris persica var. stenophylla (Hausskn. ex Baker) Dykes | Synonym |  | iPlants | 
	
		| Iris persica var. tauri (Siehe) Dykes | Synonym |  | iPlants | 
	
		| Iris petrana Dinsm. | Accepted |  | iPlants | 
	
		| Iris × phoenicis Small | Synonym |  | iPlants | 
	
		| Iris phragmitetorum Hand.-Mazz. | Synonym |  | iPlants | 
	
		| Iris × piatrae Prodán | Synonym |  | iPlants | 
	
		| Iris picta Spreng. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris picta Mill. | Synonym |  | iPlants | 
	
		| Iris pineticola Klokov | Synonym |  | iPlants | 
	
		| Iris pinetorum Eastw. | Synonym |  | iPlants | 
	
		| Iris planifolia (Mill.) Fiori & Paol. | Accepted |  | iPlants | 
	
		| Iris planifolia var. micrantha Batt. | Synonym |  | iPlants | 
	
		| Iris planifolia var. tarhunensis (Borzi & Mattei) Maire & Weiller | Synonym |  | iPlants | 
	
		| Iris platyptera B.Mathew & Wendelbo | Accepted |  | iPlants | 
	
		| Iris plicata Lam. | Synonym |  | iPlants | 
	
		| Iris plumaria Thunb. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris pluriscapis Prodán | Synonym |  | iPlants | 
	
		| Iris polakii Stapf | Synonym |  | iPlants | 
	
		| Iris polakii f. protonyma Stapf | Synonym |  | iPlants | 
	
		| Iris polakii f. urmiensis (Hoog) Stapf | Synonym |  | iPlants | 
	
		| Iris polonica Fomin & Bordz. | Synonym |  | TRO | 
	
		| Iris polychroa Gand. | Unresolved |  | iPlants | 
	
		| Iris polystachya Thunb. | Synonym |  | iPlants | 
	
		| Iris polysticta Diels | Synonym |  | iPlants | 
	
		| Iris pomeridiana Fisch. ex Klatt | Synonym |  | iPlants | 
	
		| Iris pontica Zapal. | Accepted |  | iPlants | 
	
		| Iris popovii (Vved.) Vved. | Accepted |  | iPlants | 
	
		| Iris porphyrochrysa Wendelbo | Accepted |  | iPlants | 
	
		| Iris postii Mouterde | Accepted |  | iPlants | 
	
		| Iris potaninii Maxim. | Accepted |  | iPlants | 
	
		| Iris potaninii var. arenaria Doronkin | Synonym |  | iPlants | 
	
		| Iris potaninii var. potaninii | Accepted |  | iPlants | 
	
		| Iris praecox Salisb. | Synonym |  | iPlants | 
	
		| Iris pratensis Lam. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris prilipkoana Kem.-Nath. | Synonym |  | iPlants | 
	
		| Iris prismatica Pursh | Accepted |  | iPlants | 
	
		| Iris prismatica var. austrina Fernald | Synonym |  | iPlants | 
	
		| Iris proantha Diels | Accepted |  | iPlants | 
	
		| Iris proantha var. proantha | Accepted |  | iPlants | 
	
		| Iris proantha var. valida (S.S.Chien) Y.T.Zhao | Accepted |  | iPlants | 
	
		| Iris propendens Lange | Synonym |  | iPlants | 
	
		| Iris psammocola Y.T.Zhao | Accepted |  | iPlants | 
	
		| Iris pseudacorus L. | Accepted |  | iPlants | 
	
		| Iris pseudacorus var. acoriformis (Boreau) Nyman | Synonym |  | iPlants | 
	
		| Iris pseudacorus subsp. acoriformis (Boreau) K.Richt. | Synonym |  | iPlants | 
	
		| Iris pseudacorus var. acoroides (Spach) Baker | Synonym |  | iPlants | 
	
		| Iris pseudacorus var. bastardii (Boreau) Nyman | Synonym |  | iPlants | 
	
		| Iris pseudacorus subsp. bastardii (Boreau) K.Richt. | Synonym |  | iPlants | 
	
		| Iris pseudacorus f. longiacuminata Prodán | Synonym |  | iPlants | 
	
		| Iris pseudacorus f. nyaradyana Prodán | Synonym |  | iPlants | 
	
		| Iris pseudacorus var. ochroleuca Peterm. | Synonym |  | WCSP | 
	
		| Iris pseudacorus f. submersa Glück | Synonym |  | iPlants | 
	
		| Iris pseudocapnoides Rukans | Accepted |  | iPlants | 
	
		| Iris pseudocaucasica Grossh. | Accepted |  | iPlants | 
	
		| Iris × pseudocristata Small | Synonym |  | iPlants | 
	
		| Iris pseudocyperus Schur | Synonym |  | iPlants | 
	
		| Iris pseudograminea Schur | Synonym |  | iPlants | 
	
		| Iris pseudonotha Galushko | Accepted |  | iPlants | 
	
		| Iris pseudopallida Trinajstic | Unresolved |  | TRO | 
	
		| Iris pseudopulcherrima Berg | Synonym |  | iPlants | 
	
		| Iris pseudopumila Tineo | Accepted |  | iPlants | 
	
		| Iris pseudopumila var. panormitana (Tod.) Nyman | Synonym |  | iPlants | 
	
		| Iris pseudopumila subsp. panormitana (Tod.) K.Richt. | Synonym |  | iPlants | 
	
		| Iris pseudopumila subsp. pseudopumila | Accepted |  | iPlants | 
	
		| Iris × pseudopumilioides (Prodán) Prodán | Synonym |  | iPlants | 
	
		| Iris pseudorossii S.S.Chien | Synonym |  | iPlants | 
	
		| Iris pseudorossii var. valida S.S.Chien | Synonym |  | iPlants | 
	
		| Iris pseudosibirica Schur | Synonym |  | iPlants | 
	
		| Iris × pseudovariegata Leichtlin | Unresolved |  | iPlants | 
	
		| Iris pskemensis Rukans | Accepted |  | iPlants | 
	
		| Iris pulchella Regel | Synonym |  | iPlants | 
	
		| Iris pulcherrima Berg | Synonym |  | iPlants | 
	
		| Iris pumila L. | Accepted |  | iPlants | 
	
		| Iris pumila f. acuta Prodán | Synonym |  | iPlants | 
	
		| Iris pumila subsp. aequiloba (Ledeb.) K.Richt. | Synonym |  | iPlants | 
	
		| Iris pumila f. albiflora Schur | Synonym |  | iPlants | 
	
		| Iris pumila f. atroviolacea Schur | Synonym |  | iPlants | 
	
		| Iris pumila subsp. attica (Boiss. & Heldr.) K.Richt. | Accepted |  | iPlants | 
	
		| Iris pumila var. barthii Prodán & Buia | Synonym |  | iPlants | 
	
		| Iris pumila var. barthiiformis Prodán | Synonym |  | iPlants | 
	
		| Iris pumila var. binata (Schur) Schur | Synonym |  | iPlants | 
	
		| Iris pumila var. dobrogensis Prodán | Synonym |  | iPlants | 
	
		| Iris pumila var. guertleri Prodán | Synonym |  | iPlants | 
	
		| Iris pumila var. heliotropii Prodán & Borza | Synonym |  | iPlants | 
	
		| Iris pumila var. latispatha Prodán & Borza | Synonym |  | iPlants | 
	
		| Iris pumila var. lutea Ker Gawl. | Synonym |  | iPlants | 
	
		| Iris pumila var. macrocarpa Prodán | Synonym |  | iPlants | 
	
		| Iris pumila f. moldavica Prodán | Synonym |  | iPlants | 
	
		| Iris pumila var. ochroleuca Prodán & Borza | Synonym |  | iPlants | 
	
		| Iris pumila var. pseudopumilioides Prodán | Synonym |  | iPlants | 
	
		| Iris pumila subsp. pumila | Accepted |  | iPlants | 
	
		| Iris pumila f. romanica Prodán & Borza | Synonym |  | iPlants | 
	
		| Iris pumila var. rozaliae Prodán | Synonym |  | iPlants | 
	
		| Iris pumila var. scapifera Borbás | Synonym |  | iPlants | 
	
		| Iris pumila var. scariosa (Willd. ex Link) Schmalh. | Synonym |  | iPlants | 
	
		| Iris pumila subsp. sintenisiiformis Prodán | Synonym |  | iPlants | 
	
		| Iris pumila subsp. stenoloba (A.DC. ex Baker) K.Richt. | Synonym |  | iPlants | 
	
		| Iris pumila subsp. taurica (Lodd.) Rodion. & Shevch. | Synonym |  | iPlants | 
	
		| Iris pumila subsp. transsilvanica (Schur) Asch. & Graebn. | Synonym |  | iPlants | 
	
		| Iris pumila var. tristis Nyman | Synonym |  | iPlants | 
	
		| Iris pumila subsp. tristis (Nyman) K.Richt. | Synonym |  | iPlants | 
	
		| Iris pumila f. violacea Prodán | Synonym |  | iPlants | 
	
		| Iris punctata Moench | Synonym |  | iPlants | 
	
		| Iris purdyi Eastw. | Accepted |  | iPlants | 
	
		| Iris purpurascens Berg | Synonym |  | iPlants | 
	
		| Iris purpurea Siehe | Synonym |  | iPlants | 
	
		| Iris purpureobractea B.Mathew & T.Baytop | Accepted |  | iPlants | 
	
		| Iris × purpurissata Small | Synonym |  | iPlants | 
	
		| Iris pyrenaica L. | Synonym |  | iPlants | 
	
		| Iris pyrenaica Bubani [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris × pyrrholopha Alexander | Synonym |  | iPlants | 
	
		| Iris qinghainica Y.T.Zhao | Accepted |  | iPlants | 
	
		| Iris ramosa Thunb. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris ramosissima L.f. | Synonym |  | iPlants | 
	
		| Iris × redouteana Spach | Synonym |  | iPlants | 
	
		| Iris reflexa Berg | Synonym |  | iPlants | 
	
		| Iris × regalis Small | Synonym |  | iPlants | 
	
		| Iris regelii Maxim. ex Regel | Synonym |  | iPlants | 
	
		| Iris × regifulva Alexander | Synonym |  | iPlants | 
	
		| Iris reginae Horvat & M.D.Horvat | Synonym |  | iPlants | 
	
		| Iris regis-uzziae Feinbrun | Accepted |  | iPlants | 
	
		| Iris reichenbachiana Klatt | Synonym |  | iPlants | 
	
		| Iris reichenbachii Heuff. | Accepted |  | iPlants | 
	
		| Iris reichenbachii var. bosniaca Beck | Synonym |  | iPlants | 
	
		| Iris reichenbachii var. lutea Peia | Synonym |  | iPlants | 
	
		| Iris reichenbachii var. tenuifolia Velen. | Synonym |  | iPlants | 
	
		| Iris reichenbachii var. tubifera Velen. | Synonym |  | iPlants | 
	
		| Iris × relicta Colas. | Synonym |  | iPlants | 
	
		| Iris × repanda Berg | Synonym |  | iPlants | 
	
		| Iris reticulata M.Bieb. | Accepted |  | iPlants | 
	
		| Iris reticulata var. atropurpurea Dykes | Synonym |  | iPlants | 
	
		| Iris reticulata var. bakeriana (Foster) B.Mathew & Wendelbo | Accepted |  | iPlants | 
	
		| Iris reticulata var. cyanea Regel | Synonym |  | iPlants | 
	
		| Iris reticulata var. histrio (Rchb.f.) Foster | Synonym |  | iPlants | 
	
		| Iris reticulata var. histrioides G.F.Wilson | Synonym |  | iPlants | 
	
		| Iris reticulata var. krelagei Regel | Synonym |  | iPlants | 
	
		| Iris reticulata var. reticulata | Accepted |  | iPlants | 
	
		| Iris reticulata var. sophenensis Foster | Synonym |  | iPlants | 
	
		| Iris revoluta Colas. | Accepted |  | iPlants | 
	
		| Iris × rhodantha Alexander | Synonym |  | iPlants | 
	
		| Iris × rhodochrysea Small | Synonym |  | iPlants | 
	
		| Iris rigida Sieber ex Klatt | Synonym |  | iPlants | 
	
		| Iris rivularis Small | Synonym |  | iPlants | 
	
		| Iris robinsoniana F.Muell. | Synonym |  | iPlants | 
	
		| Iris × robusta E.S.Anderson | Accepted |  | iPlants | 
	
		| Iris rosenbachiana Regel | Accepted |  | iPlants | 
	
		| Iris rosenbachiana var. baldshuanica (O.Fedtsch. & B.Fedtsch.) Dykes | Synonym |  | iPlants | 
	
		| Iris rosenbachiana var. coerulea Regel | Synonym |  | iPlants | 
	
		| Iris rosenbachiana var. violacea Regel | Synonym |  | iPlants | 
	
		| Iris × rosiflora Small | Synonym |  | iPlants | 
	
		| Iris × rosilutea Alexander | Synonym |  | iPlants | 
	
		| Iris × rosipurpurea Alexander | Synonym |  | iPlants | 
	
		| Iris rossii Baker | Accepted |  | iPlants | 
	
		| Iris rossii f. alba Y.N.Lee | Synonym |  | iPlants | 
	
		| Iris rossii f. albiflora Y.X.Ma & Y.T.Zhao | Synonym |  | iPlants | 
	
		| Iris rossii var. latifolia J.K.Sim & Y.S.Kim | Synonym |  | iPlants | 
	
		| Iris rossii f. purpurascens Y.N.Lee | Synonym |  | iPlants | 
	
		| Iris rosthornii Diels | Synonym |  | iPlants | 
	
		| Iris × rothschildii Degen | Synonym |  | iPlants | 
	
		| Iris rozaliae Prodán | Synonym |  | iPlants | 
	
		| Iris × rubea Alexander | Synonym |  | iPlants | 
	
		| Iris rubescens Raf. | Synonym |  | iPlants | 
	
		| Iris × rubicunda Small | Synonym |  | iPlants | 
	
		| Iris × rubrolilacina Alexander | Synonym |  | iPlants | 
	
		| Iris rubromarginata Baker | Synonym |  | iPlants | 
	
		| Iris rubromarginata subsp. mellita (Janka) K.Richt. | Synonym |  | iPlants | 
	
		| Iris rudskyi Horvat & M.D.Horvat | Synonym |  | iPlants | 
	
		| Iris rupestris Salisb. | Synonym |  | iPlants | 
	
		| Iris ruthenica Ker Gawl. | Accepted |  | iPlants | 
	
		| Iris ruthenica subsp. brevituba (Maxim.) Doronkin | Synonym |  | iPlants | 
	
		| Iris ruthenica var. brevituba Maxim. | Synonym |  | iPlants | 
	
		| Iris ruthenica f. leucantha Y.T.Zhao | Synonym |  | iPlants | 
	
		| Iris ruthenica var. nana Maxim. | Synonym |  | iPlants | 
	
		| Iris ruthenica var. uniflora (Pall. ex Link) Baker | Synonym |  | iPlants | 
	
		| Iris ruthenica var. uniglumis Spach | Synonym |  | iPlants | 
	
		| Iris rutherfordii J.Mart.Rodr., P.Vargas, Carine & Jury | Unresolved |  | WCSP (in review) | 
	
		| Iris sabina N.Terracc. | Synonym |  | iPlants | 
	
		| Iris × salmonicolor Small | Synonym |  | iPlants | 
	
		| Iris salsa Pall. | Synonym |  | iPlants | 
	
		| Iris samariae Dinsm. | Synonym |  | iPlants | 
	
		| Iris samaritanii Heldr. | Synonym |  | iPlants | 
	
		| Iris × sambucina L. | Synonym |  | iPlants | 
	
		| Iris × sancti-cyri J.Rousseau | Accepted |  | iPlants | 
	
		| Iris sanguinea Donn ex Hornem. | Accepted |  | iPlants | 
	
		| Iris sanguinea f. albiflora Makino | Synonym |  | iPlants | 
	
		| Iris sanguinea var. coronalis Y.N.Lee | Synonym |  | iPlants | 
	
		| Iris sanguinea var. sanguinea | Accepted |  | iPlants | 
	
		| Iris sanguinea f. sericiflora Y.N.Lee | Synonym |  | iPlants | 
	
		| Iris sanguinea f. tetrapetala Doronkin | Synonym |  | iPlants | 
	
		| Iris sanguinea var. violacea Makino | Accepted |  | iPlants | 
	
		| Iris sarajevoensis Prodán | Synonym |  | iPlants | 
	
		| Iris sari Schott ex Baker | Accepted |  | iPlants | 
	
		| Iris sari var. lurida Boiss. | Synonym |  | iPlants | 
	
		| Iris sari var. nazerena Foster | Synonym |  | iPlants | 
	
		| Iris sari-nazarens Foster | Synonym |  | iPlants | 
	
		| Iris sativa Mill. | Synonym |  | iPlants | 
	
		| Iris savannarum Small | Accepted |  | iPlants | 
	
		| Iris savatieri Nakai [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris scariosa Willd. ex Link | Accepted |  | iPlants | 
	
		| Iris scariosa var. eulefeldii (Regel) Maxim. | Synonym |  | iPlants | 
	
		| Iris schachtii Markgr. | Accepted |  | iPlants | 
	
		| Iris schelkowinkowii (Fomin) Fomin | Accepted |  | iPlants | 
	
		| Iris schischkinii Grossh. | Accepted |  | iPlants | 
	
		| Iris × schizolopha Alexander | Synonym |  | iPlants | 
	
		| Iris schmidtii Baker | Synonym |  | iPlants | 
	
		| Iris scorpioides Desf. | Synonym |  | iPlants | 
	
		| Iris serbica Pancic | Synonym |  | iPlants | 
	
		| Iris serotina Willk. | Accepted |  | iPlants | 
	
		| Iris setacea Thunb. | Synonym |  | iPlants | 
	
		| Iris setifolia L.f. | Synonym |  | iPlants | 
	
		| Iris × setina Colas. | Synonym |  | iPlants | 
	
		| Iris setosa Pall. ex Link | Accepted |  | iPlants | 
	
		| Iris setosa var. canadensis Foster | Synonym |  | iPlants | 
	
		| Iris setosa var. hondoensis Honda | Synonym |  | iPlants | 
	
		| Iris setosa var. interior E.S.Anderson | Synonym |  | iPlants | 
	
		| Iris setosa subsp. interior (E.S.Anderson) Hultén | Synonym |  | iPlants | 
	
		| Iris setosa var. nasuensis H.Hara | Synonym |  | iPlants | 
	
		| Iris setosa f. pallidiflora Fernald | Synonym |  | iPlants | 
	
		| Iris setosa var. platyrhyncha Hultén | Synonym |  | iPlants | 
	
		| Iris setosa subsp. pygmaea C.E.Lundstr. | Synonym |  | iPlants | 
	
		| Iris setosa f. zonalis Eames | Synonym |  | iPlants | 
	
		| Iris × setosothungbergii H.Koidz. ex T.Shimizu | Accepted |  | iPlants | 
	
		| Iris × shelfordensis H.R.Wehrh. | Unresolved |  | iPlants | 
	
		| Iris shrevei Small | Synonym |  | iPlants | 
	
		| Iris sibirica L. | Accepted |  | iPlants | 
	
		| Iris sibirica var. acuta (Willd.) Trevir. | Synonym |  | iPlants | 
	
		| Iris sibirica f. albiflora Makino | Synonym |  | iPlants | 
	
		| Iris sibirica var. flexuosa (Murray) Baker | Synonym |  | iPlants | 
	
		| Iris sibirica var. haematophylla (Fisch. ex Link) Turcz. | Synonym |  | iPlants | 
	
		| Iris sibirica var. orientalis (Schrank) Baker | Synonym |  | iPlants | 
	
		| Iris sibirica var. sanguinea (Donn ex Hornem.) Ker Gawl. | Synonym |  | iPlants | 
	
		| Iris sibirica f. stellata Makino | Synonym |  | iPlants | 
	
		| Iris sibirica subsp. triflora (Balb.) Nyman | Synonym |  | iPlants | 
	
		| Iris sibirica var. trigonocarpa Baker | Synonym |  | iPlants | 
	
		| Iris sichuanensis Y.T.Zhao | Synonym |  | iPlants | 
	
		| Iris sicula Tod. | Synonym |  | iPlants | 
	
		| Iris sieheana Lynch | Synonym |  | iPlants | 
	
		| Iris sikkimensis Dykes | Unresolved |  | iPlants | 
	
		| Iris silvestris Vell. | Synonym |  | iPlants | 
	
		| Iris sindjarensis Boiss. & Hausskn. | Synonym |  | iPlants | 
	
		| Iris × sinistra Sosn. | Unresolved |  | WCSP (in review) | 
	
		| Iris sintenisii Janka | Accepted |  | iPlants | 
	
		| Iris sintenisii subsp. brandzae (Prodán) D.A.Webb & Chater | Accepted |  | iPlants | 
	
		| Iris sintenisii subsp. brandzae Prod. | Synonym |  | TRO | 
	
		| Iris sintenisii subsp. sintenisii | Accepted |  | iPlants | 
	
		| Iris sisyrinchium L. | Synonym |  | iPlants | 
	
		| Iris sisyrinchium f. alba Gattef. & Weiller | Synonym |  | iPlants | 
	
		| Iris sisyrinchium f. caerulea Maire & Weiller | Synonym |  | iPlants | 
	
		| Iris sisyrinchium subsp. fugax (Ten.) K.Richt. | Synonym |  | iPlants | 
	
		| Iris sisyrinchium var. major Cambess. | Synonym |  | iPlants | 
	
		| Iris sisyrinchium var. marmarica Pamp. | Synonym |  | iPlants | 
	
		| Iris sisyrinchium var. minor Cambess. | Synonym |  | iPlants | 
	
		| Iris sisyrinchium var. monophylla (Klatt) Heldr. | Synonym |  | iPlants | 
	
		| Iris sisyrinchium subsp. monophylla (Klatt) K.Richt. | Synonym |  | iPlants | 
	
		| Iris sisyrinchium var. purpurea Braun-Blanq. & Maire | Synonym |  | iPlants | 
	
		| Iris sisyrinchium f. rosea Gattef. & Weiller | Synonym |  | iPlants | 
	
		| Iris sisyrinchium var. syrtica (Viv.) E.A.Durand & Barratte | Synonym |  | iPlants | 
	
		| Iris sisyrinchium f. violacea Gattef. & Weiller | Synonym |  | iPlants | 
	
		| Iris skorpilii Velen. | Synonym |  | iPlants | 
	
		| Iris sofarana Foster | Synonym |  | iPlants | 
	
		| Iris sofarana f. franjieh Chaudhary, G.Kirkw. & C.Weymouth | Synonym |  | iPlants | 
	
		| Iris sofarana subsp. kasruwana (Dinsm.) Chaudhary, G.Kirkw. & C.Weymouth | Synonym |  | iPlants | 
	
		| Iris sofarana f. kasruwana (Dinsm.) Mouterde | Synonym |  | iPlants | 
	
		| Iris sofarana var. magnifica Siehe | Synonym |  | iPlants | 
	
		| Iris sofarana f. westii (Dinsm.) Mouterde | Synonym |  | iPlants | 
	
		| Iris sogdiana Bunge | Synonym |  | iPlants | 
	
		| Iris songarica Schrenk | Accepted |  | iPlants | 
	
		| Iris songarica var. gracilis Maxim. | Synonym |  | iPlants | 
	
		| Iris sordida Willd. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris sordida Retz. | Synonym |  | iPlants | 
	
		| Iris × spaethii H.R.Wehrh. | Unresolved |  | iPlants | 
	
		| Iris spathacea Thunb. | Synonym |  | iPlants | 
	
		| Iris spathacea J.St.-Hil. ex Roem. & Schult. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris spathulata Willd. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris spathulata L.f. | Synonym |  | iPlants | 
	
		| Iris spathulata Cav. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris spathulata Lam. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris speciosa N.Terracc. | Synonym |  | iPlants | 
	
		| Iris speciosissima Filippov | Synonym |  | iPlants | 
	
		| Iris × spectabilis Salisb. | Synonym |  | iPlants | 
	
		| Iris spectabilis Spach [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris speculatrix Hance | Accepted |  | iPlants | 
	
		| Iris speculatrix var. alba V.H.C.Jarrett | Synonym |  | iPlants | 
	
		| Iris splendens O.Fedtsch. | Synonym |  | iPlants | 
	
		| Iris sprengeri Siehe | Accepted |  | iPlants | 
	
		| Iris spuria L. | Accepted |  | iPlants | 
	
		| Iris spuria subsp. aurea Dykes | Synonym |  | iPlants | 
	
		| Iris spuria subsp. carthaliniae (Fomin) B.Mathew | Accepted |  | iPlants | 
	
		| Iris spuria var. daenensis (Kotschy ex Baker) Baker | Synonym |  | iPlants | 
	
		| Iris spuria subsp. demetrii (Achv. & Mirzoeva) B.Mathew | Accepted |  | iPlants | 
	
		| Iris spuria var. desertorum (Gueldenst.) Sims | Synonym |  | iPlants | 
	
		| Iris spuria subsp. gueldenstadtiana (Lepech.) Soldano | Synonym |  | iPlants | 
	
		| Iris spuria subsp. halophila (Pall.) B.Mathew & Wendelbo | Synonym |  | iPlants | 
	
		| Iris spuria var. halophila (Pall.) Sims | Synonym |  | iPlants | 
	
		| Iris spuria var. hispanica Dykes | Synonym |  | iPlants | 
	
		| Iris spuria subsp. maritima (Dykes) P.Fourn. | Accepted |  | iPlants | 
	
		| Iris spuria var. maritima Dykes | Synonym |  | iPlants | 
	
		| Iris spuria subsp. monnieri (DC.) Dykes | Synonym |  | iPlants | 
	
		| Iris spuria subsp. musulmanica (Fomin) Takht. | Accepted |  | iPlants | 
	
		| Iris spuria var. notha (M.Bieb.) Baker | Synonym |  | iPlants | 
	
		| Iris spuria subsp. notha (M.Bieb.) Asch. & Graebn. | Accepted |  | iPlants | 
	
		| Iris spuria var. notha R. R. Stewart | Synonym |  | TRO | 
	
		| Iris spuria var. ochroleuca (L.) Sims | Synonym |  | iPlants | 
	
		| Iris spuria subsp. ochroleuca (L.) Dykes | Synonym |  | iPlants | 
	
		| Iris spuria var. reichenbachiana (Klatt) Dykes | Synonym |  | iPlants | 
	
		| Iris spuria subsp. sogdiana (Bunge) B.Mathew | Synonym |  | iPlants | 
	
		| Iris spuria subsp. spuria | Accepted |  | iPlants | 
	
		| Iris spuria var. subbarbata (Joó) Baker | Synonym |  | iPlants | 
	
		| Iris squalens Thunb. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris × squalens L. | Synonym |  | iPlants | 
	
		| Iris × squalens var. biflora Prodán & Buia | Synonym |  | iPlants | 
	
		| Iris × squalens subsp. borzae Prodán | Synonym |  | iPlants | 
	
		| Iris × squalens subsp. lepida (Heuff.) Nyman | Synonym |  | iPlants | 
	
		| Iris × squalens var. rosea Prodán & Buia | Synonym |  | iPlants | 
	
		| Iris squamata Gaterau | Synonym |  | iPlants | 
	
		| Iris staintonii H.Hara | Accepted |  | iPlants | 
	
		| Iris statellae Tod. | Synonym |  | iPlants | 
	
		| Iris stenogyna F.Delaroche | Synonym |  | iPlants | 
	
		| Iris stenoloba A.DC. ex Baker | Synonym |  | iPlants | 
	
		| Iris stenophylla Hausskn. ex Baker | Accepted |  | iPlants | 
	
		| Iris stenophylla Hausskn. & Siehe | Synonym |  | TRO | 
	
		| Iris stenophylla subsp. stenophylla | Accepted |  | iPlants | 
	
		| Iris stocksii (Baker) Boiss. | Accepted |  | iPlants | 
	
		| Iris stocksii var. purpurea Baker ex Boiss. | Synonym |  | iPlants | 
	
		| Iris stolonifera Maxim. | Accepted |  | iPlants | 
	
		| Iris straussii Leichtlin ex Micheli | Unresolved |  | iPlants | 
	
		| Iris stricta Moench | Synonym |  | iPlants | 
	
		| Iris stylosa Desf. | Synonym |  | iPlants | 
	
		| Iris stylosa var. angustifolia Boiss. & Heldr. | Synonym |  | iPlants | 
	
		| Iris × suaveolens (N.Terracc.) A.Terracc. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris suaveolens Boiss. & Reut. | Accepted |  | iPlants | 
	
		| Iris suaveolens f. aureoflava Prodán | Synonym |  | iPlants | 
	
		| Iris suaveolens f. flavobarbata Prodán | Synonym |  | iPlants | 
	
		| Iris suavis Salisb. | Synonym |  | iPlants | 
	
		| Iris subbarbata Joó | Synonym |  | iPlants | 
	
		| Iris subbiflora Brot. | Synonym |  | iPlants | 
	
		| Iris subdecolorata Vved. | Accepted |  | iPlants | 
	
		| Iris subdichotoma Y.T.Zhao | Accepted |  | iPlants | 
	
		| Iris subdichotoma f. alba Y.G.Shen & Y.T.Zhao | Synonym |  | iPlants | 
	
		| Iris × subfulva Small | Synonym |  | iPlants | 
	
		| Iris subtriflora Fieber ex Klatt | Synonym |  | iPlants | 
	
		| Iris sulcata Wall. [Invalid] | Synonym |  | iPlants | 
	
		| Iris sulphurea K.Koch | Synonym |  | iPlants | 
	
		| Iris × superba Berg | Synonym |  | iPlants | 
	
		| Iris susiana L. | Accepted |  | iPlants | 
	
		| Iris susiana f. westii (Dinsm.) Sealy | Synonym |  | iPlants | 
	
		| Iris suworowii Regel | Synonym |  | iPlants | 
	
		| Iris swensoniana Chaudhary, G.Kirkw. & C.Weymouth | Accepted |  | iPlants | 
	
		| Iris swertii Lam. | Synonym |  | iPlants | 
	
		| Iris sylvatica Balb. ex Roem. & Schult. | Synonym |  | iPlants | 
	
		| Iris sylvestris Vell. | Unresolved |  | iPlants | 
	
		| Iris syrtica Viv. | Synonym |  | iPlants | 
	
		| Iris tadshikorum (Vved.) Vved. | Accepted |  | iPlants | 
	
		| Iris tadshikorum Vved. | Synonym |  | TRO | 
	
		| Iris taitii Foster | Synonym |  | iPlants | 
	
		| Iris talischi Sprenger | Synonym |  | iPlants | 
	
		| Iris tangerica G.Don | Unresolved |  | iPlants | 
	
		| Iris taochia Woronow ex Grossh. | Accepted |  | iPlants | 
	
		| Iris × tardiflora Berg | Synonym |  | iPlants | 
	
		| Iris tarhunensis (Borzi & Mattei) Pamp. | Synonym |  | iPlants | 
	
		| Iris × tatianae Grossh. | Synonym |  | iPlants | 
	
		| Iris tauri Siehe | Synonym |  | iPlants | 
	
		| Iris taurica Lodd. | Synonym |  | iPlants | 
	
		| Iris tectorum Maxim. | Accepted |  | iPlants | 
	
		| Iris tectorum f. alba (Dykes) Makino | Synonym |  | iPlants | 
	
		| Iris tectorum var. alba Dykes | Synonym |  | iPlants | 
	
		| Iris tenax Douglas ex Lindl. | Accepted |  | iPlants | 
	
		| Iris tenax var. australis (Parish) R.C.Foster | Synonym |  | iPlants | 
	
		| Iris tenax subsp. bracteata (S.Watson) Q.D.Clarkson | Synonym |  | iPlants | 
	
		| Iris tenax subsp. chrysophylla (Howell) Q.D.Clarkson | Synonym |  | iPlants | 
	
		| Iris tenax var. gormanii (Piper) R.C.Foster | Synonym |  | iPlants | 
	
		| Iris tenax subsp. innominata (L.F.Hend.) Q.D.Clarkson | Synonym |  | iPlants | 
	
		| Iris tenax subsp. klamathensis L.W.Lenz | Synonym |  | iPlants | 
	
		| Iris tenax subsp. thompsonii (R.C.Foster) Q.D.Clarkson | Synonym |  | iPlants | 
	
		| Iris tenax var. thompsonii (R.C.Foster) Q.D.Clarkson | Synonym |  | iPlants | 
	
		| Iris tenorei Parl. | Synonym |  | iPlants | 
	
		| Iris tenuifolia Pall. | Accepted |  | iPlants | 
	
		| Iris tenuifolia var. thianshanica Maxim. | Synonym |  | TRO | 
	
		| Iris tenuifolia var. tianschanica Maxim. | Synonym |  | iPlants | 
	
		| Iris tenuis S.Watson | Accepted |  | iPlants | 
	
		| Iris tenuissima Dykes | Accepted |  | iPlants | 
	
		| Iris tenuissima subsp. purdyiformis (R.C.Foster) L.W.Lenz | Synonym |  | iPlants | 
	
		| Iris tenuissima var. purdyiformis R.C.Foster | Synonym |  | iPlants | 
	
		| Iris theresiae Sennen & Mauricio | Synonym |  | iPlants | 
	
		| Iris thianshanica (Maxim.) Vved. | Synonym |  | TRO | 
	
		| Iris × thomasii Small | Synonym |  | iPlants | 
	
		| Iris × thompsonii R.C.Foster | Accepted |  | iPlants | 
	
		| Iris thoroldii Baker ex Hemsl. | Synonym |  | iPlants | 
	
		| Iris thunbergii C.E.Lundstr. | Synonym |  | iPlants | 
	
		| Iris tianschanica (Maxim.) Vved. | Synonym |  | iPlants | 
	
		| Iris tigridia Bunge ex Ledeb. | Accepted |  | iPlants | 
	
		| Iris tigridia var. tigridia | Accepted |  | iPlants | 
	
		| Iris tigrina Jacquem. ex Baker | Synonym |  | iPlants | 
	
		| Iris timofejewii Woronow | Accepted |  | iPlants | 
	
		| Iris tinaei Tod. | Synonym |  | iPlants | 
	
		| Iris tingitana Boiss. & Reut. | Accepted |  | iPlants | 
	
		| Iris tingitana var. fontanesii (Godr.) Maire | Synonym |  | iPlants | 
	
		| Iris todaroana Cif. & Giacom. ex S.Pignatti | Synonym |  | iPlants | 
	
		| Iris tolmieana Herb. | Synonym |  | iPlants | 
	
		| Iris tomiolopha Hance | Synonym |  | iPlants | 
	
		| Iris torta Tausch | Unresolved |  | iPlants | 
	
		| Iris transsilvanica Schur | Synonym |  | iPlants | 
	
		| Iris transtagana Brot. | Synonym |  | iPlants | 
	
		| Iris trialata Brot. | Synonym |  | iPlants | 
	
		| Iris tricuspidata L.f. | Synonym |  | iPlants | 
	
		| Iris tricuspis Thunb. | Synonym |  | iPlants | 
	
		| Iris tricuspis Willd. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris tricuspis var. corolla-purpurea Thunb. | Synonym |  | iPlants | 
	
		| Iris tricuspis var. minor Jacq. | Synonym |  | iPlants | 
	
		| Iris tridentata Pursh | Accepted |  | iPlants | 
	
		| Iris triflora Balb. | Synonym |  | iPlants | 
	
		| Iris trigonocarpa A.Br. & Bouché | Synonym |  | iPlants | 
	
		| Iris tripetala Walter [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris tripetala L.f. | Synonym |  | iPlants | 
	
		| Iris tripetala Hook. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris trippneriana E.Peter | Unresolved |  | iPlants | 
	
		| Iris tristis L.f. | Synonym |  | iPlants | 
	
		| Iris tristis Rchb. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris × trojana A.Kern. ex Stapf | Synonym |  | iPlants | 
	
		| Iris tubergeniana Foster | Accepted |  | iPlants | 
	
		| Iris tuberosa L. | Accepted |  | iPlants | 
	
		| Iris tuberosa var. longifolia (Sweet) ined. | Accepted |  | iPlants | 
	
		| Iris tuberosa var. tuberosa | Accepted |  | iPlants | 
	
		| Iris × turcomanica Dykes | Unresolved |  | iPlants | 
	
		| Iris typhifolia Kitag. | Accepted |  | iPlants | 
	
		| Iris × tyriana Small | Synonym |  | iPlants | 
	
		| Iris unguicularis Poir. | Accepted |  | iPlants | 
	
		| Iris unguicularis var. angustifolia (Boiss. & Heldr.) A.P.Davis & Jury | Accepted |  | iPlants | 
	
		| Iris unguicularis subsp. carica (Wern.Schulze) A.P.Davis & Jury | Accepted |  | iPlants | 
	
		| Iris unguicularis var. carica (Wern.Schulze) A.P.Davis & Jury | Synonym |  | iPlants | 
	
		| Iris unguicularis subsp. cretensis (Janka) A.P.Davis & Jury | Accepted |  | iPlants | 
	
		| Iris unguicularis var. lazica (Albov) Dykes | Synonym |  | iPlants | 
	
		| Iris unguicularis f. lilacina Spreng. ex André | Synonym |  | iPlants | 
	
		| Iris unguicularis f. marginata Spreng. ex André | Synonym |  | iPlants | 
	
		| Iris unguicularis f. pavonia Spreng. ex André | Synonym |  | iPlants | 
	
		| Iris unguicularis f. speciosa Spreng. ex André | Synonym |  | iPlants | 
	
		| Iris unguicularis var. syriaca (Wern.Schulze) A.P.Davis & Jury | Accepted |  | iPlants | 
	
		| Iris unguicularis subsp. unguicularis | Accepted |  | iPlants | 
	
		| Iris uniflora Pall. ex Link | Accepted |  | iPlants | 
	
		| Iris uniflora f. caricina (Kitag.) P.Y.Fu & Y.A.Chen | Synonym |  | iPlants | 
	
		| Iris uniflora var. caricina Kitag. | Synonym |  | iPlants | 
	
		| Iris unifolia Schrank | Unresolved |  | iPlants | 
	
		| Iris urmiensis Hoog | Synonym |  | iPlants | 
	
		| Iris urumovii Velen. | Synonym |  | iPlants | 
	
		| Iris × vanhouttei Leichtlin ex Baker | Unresolved |  | iPlants | 
	
		| Iris × varbossania K.Malý | Synonym |  | iPlants | 
	
		| Iris variabilis Jacq. | Synonym |  | iPlants | 
	
		| Iris variabilis subsp. lusitanica (Ker Gawl.) K.Richt. | Synonym |  | iPlants | 
	
		| Iris variabilis subsp. serotina (Willk.) K.Richt. | Synonym |  | iPlants | 
	
		| Iris variabilis subsp. sordida (Salisb.) K.Richt. | Synonym |  | iPlants | 
	
		| Iris variegata L. | Accepted |  | iPlants | 
	
		| Iris variegata var. foienii Prodán & Buia | Synonym |  | iPlants | 
	
		| Iris variegata subsp. leucographa (A.Kern.) Nyman | Synonym |  | iPlants | 
	
		| Iris variegata var. lurida (Aiton) Nyman | Synonym |  | iPlants | 
	
		| Iris variegata var. pontica Prodán | Synonym |  | iPlants | 
	
		| Iris variegata var. tirnavae Prodán & Buia | Synonym |  | iPlants | 
	
		| Iris vartanii Foster | Accepted |  | iPlants | 
	
		| Iris ventricosa Pall. | Accepted |  | iPlants | 
	
		| Iris venulosa Alexander | Synonym |  | iPlants | 
	
		| Iris × venusta J.Booth ex Berg | Synonym |  | iPlants | 
	
		| Iris verna L. | Accepted |  | iPlants | 
	
		| Iris verna Pall. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris verna var. verna | Accepted |  | iPlants | 
	
		| Iris vernalis Salisb. | Synonym |  | iPlants | 
	
		| Iris versicolor L. | Accepted |  | iPlants | 
	
		| Iris versicolor Thunb. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris versicolor f. albocaerulea Rousseau | Synonym |  | iPlants | 
	
		| Iris versicolor var. blandescens Nieuwl. | Synonym |  | iPlants | 
	
		| Iris versicolor var. communis Torr. | Synonym |  | iPlants | 
	
		| Iris versicolor var. flaccida (Spach) Baker | Synonym |  | iPlants | 
	
		| Iris versicolor f. murrayana Fernald | Synonym |  | iPlants | 
	
		| Iris versicolor var. robusta Farw. | Synonym |  | iPlants | 
	
		| Iris versicolor var. shrevei (Small) B.Boivin | Synonym |  | iPlants | 
	
		| Iris versicolor var. sulcata Torr. | Synonym |  | iPlants | 
	
		| Iris versicolor var. virginica (L.) Baker | Synonym |  | iPlants | 
	
		| Iris versicolor f. virginica (L.) Voss | Synonym |  | iPlants | 
	
		| Iris vicaria Vved. | Accepted |  | iPlants | 
	
		| Iris villosa Ker Gawl. | Synonym |  | iPlants | 
	
		| Iris × vinicolor Small | Accepted |  | iPlants | 
	
		| Iris violacea Sweet [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris × violacea Savi | Synonym |  | iPlants | 
	
		| Iris violacea Klatt [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris × violilutea Alexander | Synonym |  | iPlants | 
	
		| Iris × violipurpurea Small | Accepted |  | iPlants | 
	
		| Iris × violivenosa Small | Synonym |  | iPlants | 
	
		| Iris virescens F.Delaroche | Synonym |  | iPlants | 
	
		| Iris virescens subsp. bosniaca (Beck) K.Richt. | Synonym |  | iPlants | 
	
		| Iris virescens var. erratica (Tod.) Nyman | Synonym |  | iPlants | 
	
		| Iris virescens subsp. reichenbachii (Heuff.) Nyman | Synonym |  | iPlants | 
	
		| Iris virescens var. statellae (Tod.) Nyman | Synonym |  | iPlants | 
	
		| Iris virgata Raf. | Unresolved |  | iPlants | 
	
		| Iris virginica L. | Accepted |  | iPlants | 
	
		| Iris virginica var. shrevei (Small) E.S.Anderson | Synonym |  | iPlants | 
	
		| Iris × viridis Alexander | Synonym |  | iPlants | 
	
		| Iris × viridivinea Small | Synonym |  | iPlants | 
	
		| Iris viscaria L.f. | Synonym |  | iPlants | 
	
		| Iris vorobievii N.S.Pavlova | Accepted |  | iPlants | 
	
		| Iris × vulgaris Pohl | Synonym |  | iPlants | 
	
		| Iris vvedenskyi Nevski | Accepted |  | iPlants | 
	
		| Iris vvedenskyi Nevski ex Woronow | Synonym |  | TRO | 
	
		| Iris warleyensis Foster | Accepted |  | iPlants | 
	
		| Iris watsoniana Purdy | Synonym |  | iPlants | 
	
		| Iris wattii Baker ex Hook.f. | Accepted |  | iPlants | 
	
		| Iris wendelboi Grey-Wilson & B.Mathew | Accepted |  | iPlants | 
	
		| Iris westii Dinsm. | Accepted |  | iPlants | 
	
		| Iris wherryana Small | Synonym |  | iPlants | 
	
		| Iris willmottiana Foster | Accepted |  | iPlants | 
	
		| Iris wilsonii C.H.Wright | Accepted |  | iPlants | 
	
		| Iris wilsonii var. major C.H.Wright | Synonym |  | iPlants | 
	
		| Iris winkleri Regel | Accepted |  | iPlants | 
	
		| Iris winogradowii Fomin | Accepted |  | iPlants | 
	
		| Iris wittmaniana Baker | Synonym |  | iPlants | 
	
		| Iris xanthochlora Wendelbo | Accepted |  | iPlants | 
	
		| Iris xanthospuria B.Mathew & T.Baytop | Accepted |  | iPlants | 
	
		| Iris xiphia St.-Lag. [Spelling variant] | Synonym |  | iPlants | 
	
		| Iris xiphioides Ehrh. | Synonym |  | iPlants | 
	
		| Iris xiphium Desf. [Illegitimate] | Synonym |  | iPlants | 
	
		| Iris xiphium L. | Accepted |  | iPlants | 
	
		| Iris xiphium var. battandieri Foster | Synonym |  | iPlants | 
	
		| Iris xiphium f. durandoi Batt. | Synonym |  | iPlants | 
	
		| Iris xiphium var. lusitanica (Ker Gawl.) Franco | Synonym |  | iPlants | 
	
		| Iris yebrudii Dinsm. ex Chaudhary | Accepted |  | iPlants | 
	
		| Iris yedoensis Franch. & Sav. | Synonym |  | iPlants | 
	
		| Iris yunnanensis H.Lév. | Synonym |  | iPlants | 
	
		| Iris zagrica B.Mathew & Zarrei | Unresolved |  | WCSP (in review) | 
	
		| Iris zelantea Parl. | Synonym |  | iPlants | 
	
		| Iris zenobieae Mouterde | Unresolved |  | TRO |