| Ruellia abbreviata D.N. Gibson | Synonym |  | TRO | 
	
		| Ruellia acaulis (Nees) V.M.Badillo [Illegitimate] | Unresolved |  | WCSP (in review) | 
	
		| Ruellia achimeniflora (Oerst.) Hemsl. | Synonym |  | TRO | 
	
		| Ruellia achyranthifolia Desf. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia aciculata Roth | Unresolved |  | WCSP (in review) | 
	
		| Ruellia acuminata Griseb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia acutangula Nees ex Mart. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia adenocalyx Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia adenostachya Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia adhaerens Forssk. | Synonym |  | WCSP | 
	
		| Ruellia affinia Lindau | Unresolved |  | TRO | 
	
		| Ruellia affinis T.Anderson | Unresolved |  | WCSP (in review) | 
	
		| Ruellia affinis Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia alata Wall. | Synonym |  | WCSP (in review) | 
	
		| Ruellia alba Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia albicans Bertero ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia albicaulis Bertero | Synonym |  | TRO | 
	
		| Ruellia albiflora Fernald | Synonym |  | TRO | 
	
		| Ruellia albopurpurea Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia alboviolacea Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia alopecuroidea Vahl | Synonym |  | TRO | 
	
		| Ruellia alopecuroides Vahl | Synonym |  | WCSP (in review) | 
	
		| Ruellia alternata Burm.f. | Synonym |  | WCSP (in review) | 
	
		| Ruellia amabilis S.Moore | Unresolved |  | WCSP (in review) | 
	
		| Ruellia amoena Nees [Invalid] | Synonym |  | WCSP (in review) | 
	
		| Ruellia amplectens Wall. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia amplexicaulis Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia ampliata Edgew. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia amygdalifolia Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia anagallis Burm. f. | Synonym |  | TRO | 
	
		| Ruellia anaticollis Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia angusta Bojer ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia angustiflora (Nees) Lindau ex Rambo | Accepted |  | WCSP (in review) | 
	
		| Ruellia angustifolia (Nees) Lindau [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Ruellia angustifolia (Nees) Griseb. ex Lillo | Synonym |  | TRO | 
	
		| Ruellia angustifolia Sw. | Accepted |  | TRO | 
	
		| Ruellia angustior Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia anisophylla Wall. ex Hook. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia ansericollis Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia anthracina Leonard | Accepted |  | TRO | 
	
		| Ruellia antipoda L. | Synonym |  | TRO | 
	
		| Ruellia antiquorum Wassh. & J.R.I.Wood | Unresolved |  | WCSP (in review) | 
	
		| Ruellia aquatica Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia arborescens Pav. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia arcuata Lingelsh. & Borza | Unresolved |  | WCSP (in review) | 
	
		| Ruellia arcuata Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia ardeicollis Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia argentea Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia aristata Thunb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia aristata Vahl | Unresolved |  | WCSP (in review) | 
	
		| Ruellia aromatica Roxb. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia articulata Houtt. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia aruensis S.Moore | Unresolved |  | WCSP (in review) | 
	
		| Ruellia asema Leonard | Accepted |  | WCSP (in review) | 
	
		| Ruellia aspera PHILLIPS | Accepted |  | TRO | 
	
		| Ruellia asperula (Mart. & Nees) Lindau | Accepted |  | TRO | 
	
		| Ruellia asperula (Mart. & Nees) Benth. & Hook. | Synonym |  | TRO | 
	
		| Ruellia atropurpurea Wall. | Synonym |  | TRO | 
	
		| Ruellia atroviridis Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia attenuata Wall. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia aurantiaca Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia auriculata Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia australis Cav. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia axillaris Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia axillaris Wall. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia bahiensis (Nees) Morong | Accepted |  | TRO | 
	
		| Ruellia baikiei (Hook.) N.E.Br. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia baikiei Woodrow | Unresolved |  | WCSP (in review) | 
	
		| Ruellia balsamica L.f. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia bangii Rusby | Synonym |  | TRO | 
	
		| Ruellia barbadensis Nees | Unresolved |  | TRO | 
	
		| Ruellia barbata Wall. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia barbata Vahl | Unresolved |  | WCSP (in review) | 
	
		| Ruellia barbillana Cufod. | Accepted |  | TRO | 
	
		| Ruellia barlerioides Roth | Synonym |  | TRO | 
	
		| Ruellia batangana G. Braun & K. Schum. | Synonym |  | TRO | 
	
		| Ruellia baurii C.B.Clarke | Unresolved |  | WCSP (in review) | 
	
		| Ruellia beckii Wassh. & J.R.I.Wood | Unresolved |  | WCSP (in review) | 
	
		| Ruellia beddomei C.B.Clarke | Unresolved |  | WCSP (in review) | 
	
		| Ruellia bella Craib | Unresolved |  | WCSP (in review) | 
	
		| Ruellia benedictina Chiov. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia beyrichiana S.Moore | Unresolved |  | WCSP (in review) | 
	
		| Ruellia biceps Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia bicolor Blume | Unresolved |  | WCSP (in review) | 
	
		| Ruellia bicolor Ruiz ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia biflora Bosc ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia biflora L. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia bignoniiflora S.Moore | Accepted |  | WCSP (in review) | 
	
		| Ruellia bilabiata Reinw. ex Blume | Unresolved |  | WCSP (in review) | 
	
		| Ruellia biloba Hochst. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia biolleyi Lindau | Accepted |  | TRO | 
	
		| Ruellia blanchetiana Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia blechioides Sw. | Accepted |  | TRO | 
	
		| Ruellia blechum L. | Accepted |  | TRO | 
	
		| Ruellia blumeana Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia blumei Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia bolivarensis Wassh. | Accepted |  | WCSP (in review) | 
	
		| Ruellia boranica Ensermu | Unresolved |  | WCSP (in review) | 
	
		| Ruellia bourgaei Hemsl. | Accepted |  | TRO | 
	
		| Ruellia brachyopoda Bojer ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia brachypteron Lindau | Unresolved |  | TRO | 
	
		| Ruellia brachysiphon (Nees) Hiern | Accepted |  | WCSP (in review) | 
	
		| Ruellia bracteata Roxb. | Synonym |  | TRO | 
	
		| Ruellia bracteophylla Chiov. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia brandbergensis Kers | Unresolved |  | WCSP (in review) | 
	
		| Ruellia brasiliensis Spreng. | Synonym |  | TRO | 
	
		| Ruellia breedlovei T.F. Daniel | Accepted |  | TRO | 
	
		| Ruellia brevicaulis (Nees) Lindau [Unplaced] | Unresolved |  | WCSP (in review) | 
	
		| Ruellia brevicaulis Baker | Synonym |  | TRO | 
	
		| Ruellia brevifolia (Pohl) C.Ezcurra | Accepted |  | WCSP (in review) | 
	
		| Ruellia brittoniana Leonard [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Ruellia brunoniana Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia bulbifera Lindau | Accepted |  | TRO | 
	
		| Ruellia burttii Vollesen | Unresolved |  | WCSP (in review) | 
	
		| Ruellia calicosa Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia californica (Rose) I.M. Johnst. | Accepted |  | TRO | 
	
		| Ruellia calimensis Wassh. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia callosa Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia calvescens Nees | Synonym |  | TRO | 
	
		| Ruellia calycina Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia campestris (Oerst.) Hemsl. | Synonym |  | TRO | 
	
		| Ruellia candida (Brandegee) Kobuski | Accepted |  | TRO | 
	
		| Ruellia canescens B.Heyne ex C.B.Clarke | Unresolved |  | WCSP (in review) | 
	
		| Ruellia canescens Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia canus Lindau | Unresolved |  | TRO | 
	
		| Ruellia capitata D.Don | Unresolved |  | WCSP (in review) | 
	
		| Ruellia capitata Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia capitata Rizzini | Unresolved |  | WCSP (in review) | 
	
		| Ruellia capreaefolia Nees | Unresolved |  | TRO | 
	
		| Ruellia capuronii Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia caracasana (Klotzsch & H.Karst. ex Nees) V.M.Badillo | Accepted |  | WCSP (in review) | 
	
		| Ruellia carmenaemiliae Llamozas | Accepted |  | WCSP (in review) | 
	
		| Ruellia carnea Balf.f. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia carolinensis Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia caroliniensis f. alba Steyerm. | Synonym |  | TRO | 
	
		| Ruellia caroliniensis subsp. ciliosa (Pursh) R.W. Long | Unresolved |  | TRO | 
	
		| Ruellia caroliniensis var. cinerascens (Fernald) Kartesz & Gandhi | Unresolved |  | TRO | 
	
		| Ruellia caroliniensis var. dentata (Nees) Fernald | Unresolved |  | TRO | 
	
		| Ruellia caroliniensis var. heteromorpha (Fernald) R.W. Long | Unresolved |  | TRO | 
	
		| Ruellia caroliniensis var. succulenta (Small) R.W. Long | Unresolved |  | TRO | 
	
		| Ruellia caucensis Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cavaleriei H.Lév. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cayenennsis Spreng. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cearensis Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cedilloi Ramamoorthy | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cephalotes Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cernua B.Heyne ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cernua Roxb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cernua T.Anderson | Unresolved |  | WCSP (in review) | 
	
		| Ruellia chamaedrys (Nees) Angely. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia chariessa Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia chartacea (T. Anderson) Wassh. | Accepted |  | TRO | 
	
		| Ruellia chelonoides Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia chenopodiifolia Poir. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia chilpancingana T.F.Daniel | Unresolved |  | WCSP (in review) | 
	
		| Ruellia chinensis Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia chiovendae Fiori | Unresolved |  | WCSP (in review) | 
	
		| Ruellia chiquitensis Baill. | Synonym |  | TRO | 
	
		| Ruellia chrysantha Mildbr. | Unresolved |  | TRO | 
	
		| Ruellia ciconiicollis Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia ciliaris L. | Synonym |  | TRO | 
	
		| Ruellia ciliata Ruiz ex Nees | Synonym |  | TRO | 
	
		| Ruellia ciliatiflora Hook. | Accepted |  | WCSP (in review) | 
	
		| Ruellia ciliosa Pursh | Synonym |  | TRO | 
	
		| Ruellia ciliosa var. cinerascens Fernald | Synonym |  | TRO | 
	
		| Ruellia ciliosa var. longiflora A. Gray | Synonym |  | TRO | 
	
		| Ruellia cinerascens Benth. | Unresolved |  | TRO | 
	
		| Ruellia cirsioides Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia clandestina Hook. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia clandestina L. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia clavata Reinw. ex Valeton | Unresolved |  | WCSP (in review) | 
	
		| Ruellia coccinea Vahl | Unresolved |  | WCSP (in review) | 
	
		| Ruellia coccinea Sessé & Moc. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia coerulea Morong | Synonym |  | WCSP (in review) | 
	
		| Ruellia collina Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia colombiana Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia colonensis Wassh. | Accepted |  | TRO | 
	
		| Ruellia colorata Baill. | Synonym |  | TRO | 
	
		| Ruellia colorata Blume | Synonym |  | TRO | 
	
		| Ruellia commutata Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia comonduensis T.F. Daniel | Accepted |  | TRO | 
	
		| Ruellia comosa Roxb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia comosa Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia comosa Vell. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia concavifolia Ortega | Unresolved |  | WCSP (in review) | 
	
		| Ruellia conferta Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia confinis Benth. | Synonym |  | TRO | 
	
		| Ruellia congesta (Leonard) Tharp & E.A. Barkley | Synonym |  | TRO | 
	
		| Ruellia congoensis Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia consocialis Lindau | Accepted |  | TRO | 
	
		| Ruellia contorta Blanco | Unresolved |  | WCSP (in review) | 
	
		| Ruellia conzattiana Standl. | Unresolved |  | TRO | 
	
		| Ruellia conzattii Standl. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cooperi Leonard | Synonym |  | TRO | 
	
		| Ruellia cordata Thunb. | Accepted |  | TRO | 
	
		| Ruellia cordata Brandegee | Synonym |  | TRO | 
	
		| Ruellia cordifolia Vahl | Synonym |  | TRO | 
	
		| Ruellia coromandeliana Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia coromandelina Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia corymbosa Wall. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia corynotheca F.Muell. ex Benth. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia corzoi Tharp & F.A. Barkley | Accepted |  | TRO | 
	
		| Ruellia costaricensis (Oerst.) E. Tripp & McDade | Synonym |  | TRO | 
	
		| Ruellia costata Hiern | Unresolved |  | WCSP (in review) | 
	
		| Ruellia costata Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia crenata Benth. ex Hohen. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia crispa L. | Synonym |  | TRO | 
	
		| Ruellia cristata Andrews | Unresolved |  | WCSP (in review) | 
	
		| Ruellia crossandra Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia crucis Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cuatrecasasii Wassh. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cucullata Bojer ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cumanensis Lindau | Unresolved |  | TRO | 
	
		| Ruellia cumingiana Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cupheoides Fernald | Accepted |  | TRO | 
	
		| Ruellia currorii T.Anderson | Accepted |  | WCSP (in review) | 
	
		| Ruellia curviflora Nees & Mart. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cusia Buch.-Ham. ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cuspidata Wall. | Synonym |  | TRO | 
	
		| Ruellia cyanea (Nees) T. Anderson | Accepted |  | TRO | 
	
		| Ruellia cygniflora Lindau ex Engl. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia cygniflora Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia davisiorum Tharp & F.A.Barkley | Unresolved |  | WCSP (in review) | 
	
		| Ruellia decaisniana Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia decaryi Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia deccanensis J.Graham | Unresolved |  | WCSP (in review) | 
	
		| Ruellia decipiens Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia delascioi Wassh. | Accepted |  | WCSP (in review) | 
	
		| Ruellia delavayana Baill. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia densa Hiern | Unresolved |  | WCSP (in review) | 
	
		| Ruellia densiflora Hemsl. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia densus Lindau | Unresolved |  | TRO | 
	
		| Ruellia denticulata Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dependens Roxb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dependens Hook. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia depressa L.f. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia depressa Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dequairei Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia detonsa Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia devosiana E.Morren | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dichotoma Bertero ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dichotoma Sessé & Moc. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dielsii Mildbr. | Accepted |  | TRO | 
	
		| Ruellia difformis L.f. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia diffusa (Nees) Griseb. | Synonym |  | TRO | 
	
		| Ruellia digitalis Burm. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia digitalis K.D.Koenig ex Spreng. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dimidiata Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dioscoridis Napper | Unresolved |  | WCSP (in review) | 
	
		| Ruellia diphylla Sessé & Moc. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dipteracanthus (Nees) Hemsl. | Accepted |  | TRO | 
	
		| Ruellia discifolia Oliv. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia discolor Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia discolor Lecchi ex Colla | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dissidens Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dissimilis J.B.Imlay | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dissitifolia (Nees) Lindau | Accepted |  | TRO | 
	
		| Ruellia dissitifolia var. humilior Nees | Synonym |  | TRO | 
	
		| Ruellia dissoluta Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia disticha Buch.-Ham. ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia divaricata Hoffmanns. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia divaricata Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia diversifolia S.Moore | Accepted |  | WCSP (in review) | 
	
		| Ruellia dolichosiphon Wassh. & J.R.I.Wood | Unresolved |  | WCSP (in review) | 
	
		| Ruellia domingensis Spreng. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia domingensis Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia donnell-smithii Leonard | Accepted |  | TRO | 
	
		| Ruellia dorsiflora Retz. | Synonym |  | TRO | 
	
		| Ruellia drummondiana (Nees) A. Gray | Accepted |  | TRO | 
	
		| Ruellia drushelii Tharp & F.A.Barkley | Unresolved |  | WCSP (in review) | 
	
		| Ruellia drymophila (Diels) Hand.-Mazz. | Accepted |  | TRO | 
	
		| Ruellia dubia Vahl ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dulcis Cav. | Synonym |  | TRO | 
	
		| Ruellia dulcissima Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia dura Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia ebracteolata T.Anderson | Unresolved |  | WCSP (in review) | 
	
		| Ruellia echinata Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia edwardsae Tharp & F.A.Barkley | Unresolved |  | WCSP (in review) | 
	
		| Ruellia elegans Poir. | Accepted |  | TRO | 
	
		| Ruellia elliptica Rusby | Synonym |  | TRO | 
	
		| Ruellia elongata P.Beauv. | Synonym |  | WCSP (in review) | 
	
		| Ruellia epallocaulos Leonard ex C. Ezcurra & Wassh. | Accepted |  | TRO | 
	
		| Ruellia erecta Burm. f. | Synonym |  | TRO | 
	
		| Ruellia eriocalyx Glaz. | Unresolved |  | TRO | 
	
		| Ruellia eriostachya Bojer ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia erythropus (Nees) Lindau | Accepted |  | WCSP (in review) | 
	
		| Ruellia esquirolii H.Lév. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia euantha Lindau | Synonym |  | TRO | 
	
		| Ruellia eucoma Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia eumorphantha Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia eurycodon Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia exilis McDade & E.A.Tripp | Unresolved |  | WCSP (in review) | 
	
		| Ruellia exostemma Lindau | Accepted |  | WCSP (in review) | 
	
		| Ruellia exserta Wassh. & J.R.I.Wood | Unresolved |  | WCSP (in review) | 
	
		| Ruellia extensa Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia falcata Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia fasciculata Retz. | Synonym |  | TRO | 
	
		| Ruellia fiherenensis Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia filicalyx Lindau | Accepted |  | TRO | 
	
		| Ruellia filicifolia Salzm. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia filiformis Klein ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia filiformis B.Heyne ex Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia fimbriata Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia fiorii Chiov. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia flaccida Kurz | Unresolved |  | WCSP (in review) | 
	
		| Ruellia flagelliformis Roxb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia flava Pers. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia flava Roxb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia flava Salzm. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia flexuosa Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia floribunda Hook. | Accepted |  | TRO | 
	
		| Ruellia foetida Willd. | Accepted |  | TRO | 
	
		| Ruellia foliosa Schwein. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia foliosepala T.F.Daniel | Unresolved |  | WCSP (in review) | 
	
		| Ruellia forbesii S.Moore | Unresolved |  | WCSP (in review) | 
	
		| Ruellia formosa Bonpl. | Synonym |  | TRO | 
	
		| Ruellia fragrans G.Forst. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia fruticosa Sessé & Moc. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia fulgens (Bremek.) E. Tripp | Accepted |  | TRO | 
	
		| Ruellia fulgida Andrews | Accepted |  | WCSP (in review) | 
	
		| Ruellia fulgida var. angustissima (Hochr.) Leonard | Synonym |  | WCSP (in review) | 
	
		| Ruellia furcata Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia gairae Rohr ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia galactophylla Chiov. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia galeottii Leonard | Synonym |  | TRO | 
	
		| Ruellia gangetica R.Br. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia garckeana K.Schum. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia gardneri Lindau | Unresolved |  | TRO | 
	
		| Ruellia geayi (Benoist) E. Tripp | Synonym |  | TRO | 
	
		| Ruellia geminiflora Kunth | Accepted |  | WCSP (in review) | 
	
		| Ruellia geminiflora f. albiflora Kuntze | Synonym |  | WCSP (in review) | 
	
		| Ruellia geminiflora var. angustifolia (Nees) Griseb. | Synonym |  | WCSP (in review) | 
	
		| Ruellia geminiflora var. hirsutior (Nees) Hicken | Synonym |  | WCSP (in review) | 
	
		| Ruellia geminiflora var. hirsutior Nees | Synonym |  | TRO | 
	
		| Ruellia geminiflora var. humilis Griseb. | Synonym |  | WCSP (in review) | 
	
		| Ruellia gemmipara Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia genduana C.B.Clarke | Unresolved |  | WCSP (in review) | 
	
		| Ruellia geniculata (Nees) Benoist | Accepted |  | TRO | 
	
		| Ruellia gigantea Humb. & Bonpl. | Synonym |  | WCSP (in review) | 
	
		| Ruellia glabra B.Heyne ex Roth | Unresolved |  | WCSP (in review) | 
	
		| Ruellia glabrata (Leonard) Tharp & F.A. Barkley | Synonym |  | TRO | 
	
		| Ruellia glandulosa Roth | Unresolved |  | WCSP (in review) | 
	
		| Ruellia glanduloso-punctata Lindau | Synonym |  | TRO | 
	
		| Ruellia glandulosonotata Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia glaucescens Wall. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia glischrocalyx Lindau | Accepted |  | TRO | 
	
		| Ruellia gloeocalyx K.Schum. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia glomerata Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia glomerata Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia glutinosa Wall. | Synonym |  | TRO | 
	
		| Ruellia golfodulcensis Durkee | Accepted |  | TRO | 
	
		| Ruellia gongodes Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia gooddingiana A. Nelson | Synonym |  | TRO | 
	
		| Ruellia gorgonensis Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia gossypina Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia goyazensis Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia gracilis Rusby | Unresolved |  | WCSP (in review) | 
	
		| Ruellia graecizans Backer | Synonym |  | WCSP (in review) | 
	
		| Ruellia graecizans Rech. f. | Synonym |  | TRO | 
	
		| Ruellia grandiflora Lindau | Synonym |  | TRO | 
	
		| Ruellia grandis Hook. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia grantii Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia graveolens Hoffmanns. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia griffithiana Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia grisea Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia gruicollis Benoist | Synonym |  | TRO | 
	
		| Ruellia gruicollis var. angustifolia Benoist | Synonym |  | TRO | 
	
		| Ruellia guatemalensis Donn. Sm. | Synonym |  | TRO | 
	
		| Ruellia guerrerensis T.F.Daniel | Unresolved |  | WCSP (in review) | 
	
		| Ruellia guppyi Hemsl. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia guttata Forssk. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia haematantha Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia haenkeana (Nees) Wassh. | Accepted |  | TRO | 
	
		| Ruellia hamiltoniana Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia hapalotricha Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia harveyana Stapf | Accepted |  | TRO | 
	
		| Ruellia haughtii (Leonard) E. Tripp | Synonym |  | TRO | 
	
		| Ruellia helianthemum Lindau | Unresolved |  | TRO | 
	
		| Ruellia herbstii Hiern | Unresolved |  | WCSP (in review) | 
	
		| Ruellia herzogii Lindau | Synonym |  | TRO | 
	
		| Ruellia heteromorpha Fernald | Synonym |  | TRO | 
	
		| Ruellia heterosepala Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia heterotricha Deflers | Unresolved |  | WCSP (in review) | 
	
		| Ruellia hirsuta Vell. [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Ruellia hirsuta Lindau | Synonym |  | TRO | 
	
		| Ruellia hirsutoglandulosa (Oerst.) Hemsl. | Synonym |  | TRO | 
	
		| Ruellia hirta D. Don | Synonym |  | TRO | 
	
		| Ruellia hirtella J.B.Imlay | Unresolved |  | WCSP (in review) | 
	
		| Ruellia hispida Vahl ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia hispidosa Bojer ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia hochstetteri Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia hoffmannseggii Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia homonyma Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia hookeriana (Nees) Hemsl. | Accepted |  | WCSP (in review) | 
	
		| Ruellia humboldtiana (Nees) Lindau | Accepted |  | WCSP (in review) | 
	
		| Ruellia humifusa (Oerst.) Hemsl. | Accepted |  | TRO | 
	
		| Ruellia humilis (Nees) Lindau | Synonym |  | TRO | 
	
		| Ruellia humilis f. alba (Steyerm.) Fernald | Synonym |  | TRO | 
	
		| Ruellia humilis f. alba (Steyerm.) Steyerm. | Unresolved |  | TRO | 
	
		| Ruellia humilis var. longiflora (A. Gray) Fernald | Unresolved |  | TRO | 
	
		| Ruellia humistrata Michx. | Synonym |  | TRO | 
	
		| Ruellia huttonii T.Anderson | Unresolved |  | WCSP (in review) | 
	
		| Ruellia hybrida Pursh | Unresolved |  | WCSP (in review) | 
	
		| Ruellia hygrophila Mart. | Accepted |  | TRO | 
	
		| Ruellia hygrophiloides (Nees) Hemsl. | Accepted |  | TRO | 
	
		| Ruellia hygrophylla var. glabrescens Hassl. | Synonym |  | TRO | 
	
		| Ruellia hypericifolia Rusby | Synonym |  | TRO | 
	
		| Ruellia hypericoides (Nees) Lindau | Accepted |  | TRO | 
	
		| Ruellia hyssopifolia Hochst. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia ibbensis Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia ignorantiae Herter | Synonym |  | WCSP (in review) | 
	
		| Ruellia imbricata Forssk. | Synonym |  | WCSP (in review) | 
	
		| Ruellia inaperta Spreng. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia incana B.Heyne ex C.B.Clarke | Unresolved |  | WCSP (in review) | 
	
		| Ruellia incana Blume | Unresolved |  | WCSP (in review) | 
	
		| Ruellia incomta Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia indecora Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia indigofera Griff. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia indigotica Fortune | Unresolved |  | WCSP (in review) | 
	
		| Ruellia inflata Rich. | Accepted |  | TRO | 
	
		| Ruellia infundibuliformis (L.) Andrews | Synonym |  | TRO | 
	
		| Ruellia insignis Balf.f. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia insularis (Leonard) Tharp & F.A.Barkley | Unresolved |  | WCSP (in review) | 
	
		| Ruellia intermedia Leonard | Accepted |  | WCSP (in review) | 
	
		| Ruellia intrusa Forssk. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia inundata Kunth | Accepted |  | WCSP (in review) | 
	
		| Ruellia involucrata B.Heyne ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia involucrata Vahl | Unresolved |  | WCSP (in review) | 
	
		| Ruellia ischnopoda Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia isophylla Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia jacquemontiana Nees | Synonym |  | TRO | 
	
		| Ruellia jaliscana Standl. | Accepted |  | TRO | 
	
		| Ruellia japonica Thunb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia japurensis Mart. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia jeddahica Hemaid | Unresolved |  | WCSP (in review) | 
	
		| Ruellia jimulcensis Villarreal | Accepted |  | TRO | 
	
		| Ruellia junghuhniana Miq. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia jussieuoides Schltdl. & Cham. | Accepted |  | TRO | 
	
		| Ruellia justiciiflora Hook. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia justicioides Wall. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia kerrii Craib | Unresolved |  | WCSP (in review) | 
	
		| Ruellia kleinii C.Ezcurra & Wassh. | Accepted |  | WCSP (in review) | 
	
		| Ruellia kunthiana Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia kuntzei Lindau | Synonym |  | WCSP (in review) | 
	
		| Ruellia kuriensis Vierh. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia lactea Cav. | Accepted |  | TRO | 
	
		| Ruellia lactea var. acaulis (Nees) Hemsl. | Synonym |  | TRO | 
	
		| Ruellia lacustris Cham. & Schltdl. | Synonym |  | TRO | 
	
		| Ruellia laevilinguis Lindau | Unresolved |  | TRO | 
	
		| Ruellia lagopodes Ryan ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia lamiifolia Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia lamiiformis Lindau | Unresolved |  | TRO | 
	
		| Ruellia lanatoglandulosa Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia lanatoviscosa (Nees) Hemsl. | Accepted |  | TRO | 
	
		| Ruellia lanceolata Morong | Synonym |  | WCSP (in review) | 
	
		| Ruellia lasiostachya Leonard | Accepted |  | TRO | 
	
		| Ruellia latebrosa Roth | Synonym |  | TRO | 
	
		| Ruellia latibracteata D.N. Gibson | Accepted |  | TRO | 
	
		| Ruellia latisepala Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia laxa (Nees) Lindau | Accepted |  | TRO | 
	
		| Ruellia lechleri Britton | Synonym |  | TRO | 
	
		| Ruellia lechleri var. grandifolia Britton ex Rusby | Synonym |  | TRO | 
	
		| Ruellia lehmanniana Lindau | Unresolved |  | TRO | 
	
		| Ruellia lepidota Urb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia leptosepala Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia leptostachya Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia leucantha Nees | Accepted |  | TRO | 
	
		| Ruellia leucantha var. postinsularis Gentry | Synonym |  | TRO | 
	
		| Ruellia leucantha subsp. postinsularis (Gentry) T.F. Daniel | Accepted |  | TRO | 
	
		| Ruellia leucobracteatus Durkee | Accepted |  | TRO | 
	
		| Ruellia leucoderma Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia liesneri Wassh. | Accepted |  | WCSP (in review) | 
	
		| Ruellia lilacina Hook. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia lindaviana Taub. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia lindmaniana Fritsch | Unresolved |  | WCSP (in review) | 
	
		| Ruellia linearibracteolata Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia linifolia Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia lithophila Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia littoralis L.f. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia liturata Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia loefgrenii Lindau | Synonym |  | TRO | 
	
		| Ruellia longepetiolata (Oerst.) Hemsl. | Accepted |  | TRO | 
	
		| Ruellia longicalyx Deflers | Synonym |  | TRO | 
	
		| Ruellia longifilamentosa Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia longiflora Nees [Invalid] | Synonym |  | WCSP (in review) | 
	
		| Ruellia longifolia (Pohl) Griseb. [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Ruellia longifolia Rich. | Synonym |  | TRO | 
	
		| Ruellia longifolia (Stocks) T. Anderson | Synonym |  | TRO | 
	
		| Ruellia longipedunculata Lindau | Accepted |  | TRO | 
	
		| Ruellia longipes Urb. | Synonym |  | WCSP (in review) | 
	
		| Ruellia longipila Standl. | Synonym |  | TRO | 
	
		| Ruellia longissima D.N. Gibson | Synonym |  | TRO | 
	
		| Ruellia longissima var. glabra D.N. Gibson | Synonym |  | TRO | 
	
		| Ruellia longituba D.N. Gibson | Accepted |  | TRO | 
	
		| Ruellia lorentziana Griseb. | Synonym |  | WCSP (in review) | 
	
		| Ruellia lorentziana var. paraguariensis Hassl. | Synonym |  | TRO | 
	
		| Ruellia lorentziana var. parvifolia Hassl. | Synonym |  | TRO | 
	
		| Ruellia lowei S.Moore | Unresolved |  | WCSP (in review) | 
	
		| Ruellia lupulina Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia luzona Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia luzoniensis Merr. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia lyi H. Lév. | Synonym |  | TRO | 
	
		| Ruellia lysimachia Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia macarenensis Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia macrantha Mart. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia macrocarpa Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia macrocarpus Sessé & Moc. | Synonym |  | TRO | 
	
		| Ruellia macrophylla Vahl | Accepted |  | WCSP (in review) | 
	
		| Ruellia macrophylla var. lutea Leonard | Synonym |  | WCSP (in review) | 
	
		| Ruellia macrosiphon (Nees) Donn. Sm. | Synonym |  | TRO | 
	
		| Ruellia macrosiphon (Nees) Lindau | Accepted |  | TRO | 
	
		| Ruellia macrosiphon Kurz | Synonym |  | TRO | 
	
		| Ruellia macrosolen Lillo | Accepted |  | TRO | 
	
		| Ruellia maculata Tafalla ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia maculata Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia maderensis Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia madurensis Poir. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia magnifica Mart. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia magniflora C.Ezcurra | Accepted |  | WCSP (in review) | 
	
		| Ruellia makoyana Closon | Unresolved |  | WCSP (in review) | 
	
		| Ruellia malabarica Kostel. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia malaca Leonard | Accepted |  | WCSP (in review) | 
	
		| Ruellia malacophylla C.B. Clarke | Synonym |  | TRO | 
	
		| Ruellia malacosperma Greenm. | Synonym |  | WCSP (in review) | 
	
		| Ruellia malasica (C.B.Clarke) J.B.Imlay | Unresolved |  | WCSP (in review) | 
	
		| Ruellia maranhonis Pohl ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia maravilla M.Gómez | Unresolved |  | WCSP (in review) | 
	
		| Ruellia marlothii Engl. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia matagalpae Lindau | Accepted |  | TRO | 
	
		| Ruellia mattogrossensis Lindau | Synonym |  | WCSP (in review) | 
	
		| Ruellia matudae Leonard | Accepted |  | TRO | 
	
		| Ruellia matutina Hochst. & Steud. ex C.Presl | Unresolved |  | WCSP (in review) | 
	
		| Ruellia maya T.F. Daniel | Accepted |  | TRO | 
	
		| Ruellia maynensis Lindau | Unresolved |  | TRO | 
	
		| Ruellia mcvaughii T.F.Daniel | Unresolved |  | WCSP (in review) | 
	
		| Ruellia megacantha M.E. Jones | Synonym |  | TRO | 
	
		| Ruellia megachlamys S.Moore | Unresolved |  | WCSP (in review) | 
	
		| Ruellia megasphaera Lindau | Synonym |  | TRO | 
	
		| Ruellia menthoides (Nees) Hiern | Accepted |  | WCSP (in review) | 
	
		| Ruellia metallica Leonard | Accepted |  | TRO | 
	
		| Ruellia methia Buch.-Ham. ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia metziae Tharp | Accepted |  | TRO | 
	
		| Ruellia mexicana Lindau | Unresolved |  | TRO | 
	
		| Ruellia microcalyx (Nees) Lindau | Accepted |  | TRO | 
	
		| Ruellia microcephala Lindau | Unresolved |  | TRO | 
	
		| Ruellia microphylla (Nees) Lindau [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Ruellia microphylla Cav. | Synonym |  | TRO | 
	
		| Ruellia mira McDade & E.A.Tripp | Unresolved |  | WCSP (in review) | 
	
		| Ruellia mirandana Ramamoorthy & Hornelas | Synonym |  | TRO | 
	
		| Ruellia modesta Mart. ex Nees [Invalid] | Synonym |  | WCSP (in review) | 
	
		| Ruellia molinae D.N. Gibson | Synonym |  | TRO | 
	
		| Ruellia mollis (Nees) Lindau | Accepted |  | TRO | 
	
		| Ruellia mollissima Vahl | Synonym |  | TRO | 
	
		| Ruellia monanthos (Nees) Bojer ex T. Anderson | Accepted |  | TRO | 
	
		| Ruellia monanthos var. nummulariifolia (Nees) Benoist | Accepted |  | TRO | 
	
		| Ruellia montana Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia montezumae Lindau | Synonym |  | TRO | 
	
		| Ruellia moritziana Klotzsch ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia morongii Britton | Accepted |  | TRO | 
	
		| Ruellia mucronata Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia muelleri Tharp & F.A.Barkley | Unresolved |  | WCSP (in review) | 
	
		| Ruellia muelleri var. grandiflora (Leonard) Tharp & F.A. Barkley | Synonym |  | TRO | 
	
		| Ruellia multicaulis A. Rich. | Synonym |  | TRO | 
	
		| Ruellia multifolia (Nees) Lindau | Accepted |  | WCSP (in review) | 
	
		| Ruellia multifolia var. hirsuta Hassl. | Synonym |  | TRO | 
	
		| Ruellia multifolia var. viscidula Hassl. | Synonym |  | TRO | 
	
		| Ruellia multisetosa Rusby | Synonym |  | TRO | 
	
		| Ruellia mutabilis Zipp. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia mysorensis Roth | Synonym |  | TRO | 
	
		| Ruellia nagchana Buch.-Ham. ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia nana Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia napifera Zoll. & Moritzi | Unresolved |  | WCSP (in review) | 
	
		| Ruellia neesiana Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia neesiana Klotzsch ex Schltdl. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia neesiana Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia neglecta Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia nemoralis Vahl ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia nemorosa Zoll. & Moritzi | Unresolved |  | WCSP (in review) | 
	
		| Ruellia nemorum Russell ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia neolongifolius Bennet & Raizada | Unresolved |  | WCSP (in review) | 
	
		| Ruellia neoneesiana Wassh. | Accepted |  | TRO | 
	
		| Ruellia neovedia Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia nilbutia Buch.-Ham. ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia nitens (Nees) Wassh. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia nitida (Nees) Wassh. & J.R.I. Wood | Accepted |  | TRO | 
	
		| Ruellia nobilis (S. Moore) Lindau | Accepted |  | TRO | 
	
		| Ruellia noctiflora (Nees) A. Gray | Accepted |  | TRO | 
	
		| Ruellia nocturna Hedrén | Unresolved |  | WCSP (in review) | 
	
		| Ruellia norvegigratiosa McDade & E.A.Tripp | Unresolved |  | WCSP (in review) | 
	
		| Ruellia nova Colla | Unresolved |  | WCSP (in review) | 
	
		| Ruellia novogaliciana T.F.Daniel | Unresolved |  | WCSP (in review) | 
	
		| Ruellia nubica Delile | Unresolved |  | WCSP (in review) | 
	
		| Ruellia nudiflora (Engelm. & A. Gray) Urb. | Accepted |  | TRO | 
	
		| Ruellia nudiflora var. congesta Leonard | Synonym |  | TRO | 
	
		| Ruellia nudiflora var. glabrata Leonard | Synonym |  | TRO | 
	
		| Ruellia nudiflora var. grandiflora Leonard | Synonym |  | TRO | 
	
		| Ruellia nudiflora var. humilis (Nees) Leonard | Synonym |  | TRO | 
	
		| Ruellia nudiflora var. insularis Leonard | Synonym |  | TRO | 
	
		| Ruellia nudiflora var. occidentalis (A. Gray) Leonard | Synonym |  | TRO | 
	
		| Ruellia nudiflora var. puberula Leonard | Synonym |  | TRO | 
	
		| Ruellia nudiflora var. yucatana Leonard | Synonym |  | TRO | 
	
		| Ruellia nudispica C.B.Clarke | Unresolved |  | WCSP (in review) | 
	
		| Ruellia nummularia Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia nutans Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia oaxacana Leonard | Accepted |  | TRO | 
	
		| Ruellia obliqua Pers. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia obliqua Wight ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia oblongifolia Michx. | Synonym |  | TRO | 
	
		| Ruellia obovata Blume ex Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia obovata Roxb. ex Hornem. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia obovata Buch.-Ham. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia obovata Vahl ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia obovata Roxb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia obscura Russell ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia obtusa Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia obtusata S.F. Blake | Synonym |  | TRO | 
	
		| Ruellia occidentalis (A. Gray) Tharp & F.A. Barkley | Accepted |  | TRO | 
	
		| Ruellia ochroleuca Mart. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia ocymoides Cav. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia odorata E.A.Tripp & McDade | Unresolved |  | WCSP (in review) | 
	
		| Ruellia otaviensis P.G.Mey. | Accepted |  | WCSP (in review) | 
	
		| Ruellia ovalifolia (Oerst.) Hemsl. | Accepted |  | TRO | 
	
		| Ruellia ovata Cav. | Synonym |  | TRO | 
	
		| Ruellia ovata C. B. Cl. p.p. | Synonym |  | TRO | 
	
		| Ruellia oxysepala C.B.Clarke ex Schinz | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pacifica Svenson | Synonym |  | TRO | 
	
		| Ruellia pallida Vahl | Synonym |  | TRO | 
	
		| Ruellia palmeri Greenm. | Synonym |  | TRO | 
	
		| Ruellia palustris Durkee | Accepted |  | TRO | 
	
		| Ruellia panamensis (Lindau) E. Tripp | Synonym |  | TRO | 
	
		| Ruellia panayensis Merr. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia panichanga Buch.-Ham. ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia paniculata L. | Accepted |  | WCSP (in review) | 
	
		| Ruellia paniculata Kunth | Unresolved |  | TRO | 
	
		| Ruellia panucana Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia parabolica Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia paradoxa Lindau | Synonym |  | TRO | 
	
		| Ruellia parryi A. Gray | Accepted |  | TRO | 
	
		| Ruellia parva Lindau | Accepted |  | TRO | 
	
		| Ruellia parva (Nees) Hemsl. | Unresolved |  | TRO | 
	
		| Ruellia parviflora Sessé & Moc. | Synonym |  | TRO | 
	
		| Ruellia parvifolia Urb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia patula Jacq. | Accepted |  | WCSP (in review) | 
	
		| Ruellia pauciflora Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia paucinervia (T.Anderson ex C.B.Clarke) Heine | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pauciovulata Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia paulayana Vierh. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pavala Roxb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pavoniana Nees | Unresolved |  | TRO | 
	
		| Ruellia pearcei Rusby | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pearcei (Hook.f.) N.E.Br. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pectinata Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pedunculata Torr. ex A. Gray | Accepted |  | TRO | 
	
		| Ruellia pedunculata subsp. pinetorum (Fernald) R.W. Long | Accepted |  | TRO | 
	
		| Ruellia pedunculosa (Nees) Lindau | Accepted |  | WCSP (in review) | 
	
		| Ruellia pedunculosa (Nees) B.D. Jacks. & Hook. f. | Synonym |  | TRO | 
	
		| Ruellia peninsularis (Rose) I.M. Johnst. | Accepted |  | TRO | 
	
		| Ruellia pennellii Leonard | Synonym |  | TRO | 
	
		| Ruellia penstemonoides Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pereducta Standl. | Accepted |  | WCSP (in review) | 
	
		| Ruellia pereducta Standl. ex Lundell | Unresolved |  | TRO | 
	
		| Ruellia perrieri Benoist | Synonym |  | TRO | 
	
		| Ruellia persica Burm. f. | Synonym |  | TRO | 
	
		| Ruellia persicifolia Lindl. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia petiolaris (Nees) T.F. Daniel | Accepted |  | TRO | 
	
		| Ruellia petiolata Bojer ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia philippinensis Elmer | Unresolved |  | WCSP (in review) | 
	
		| Ruellia phlomoides Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia phyllocalyx Lindau | Accepted |  | TRO | 
	
		| Ruellia picta Lodd. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pilosa (Nees) Pav. ex Nees | Accepted |  | TRO | 
	
		| Ruellia pinetorum Fernald | Synonym |  | TRO | 
	
		| Ruellia pipericaulis Rizzini | Synonym |  | TRO | 
	
		| Ruellia pittieri Lindau | Accepted |  | TRO | 
	
		| Ruellia placoidea Rendle | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pohlii Lindau | Unresolved |  | TRO | 
	
		| Ruellia poilanei Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia poissonii Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia polysperma Roth | Unresolved |  | WCSP (in review) | 
	
		| Ruellia porrigens Mart. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia porrigens Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia portellae Hook.f. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia potamophila Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia potamoxenos K.Schum. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia praeclara Standl. | Accepted |  | TRO | 
	
		| Ruellia praetermissa Schweinf. ex Lindau | Accepted |  | TRO | 
	
		| Ruellia pratensis D.N. Gibson | Synonym |  | TRO | 
	
		| Ruellia primulacea F.Muell. ex Benth. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia primulifolia Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia primuloides Heine | Accepted |  | TRO | 
	
		| Ruellia pringlei Fernald | Unresolved |  | WCSP (in review) | 
	
		| Ruellia prismatica Vell. | Synonym |  | TRO | 
	
		| Ruellia procumbens Nees | Unresolved |  | TRO | 
	
		| Ruellia prostrata Poir. | Synonym |  | TRO | 
	
		| Ruellia prostrata var. dejecta (Nees) C.B. Clarke | Synonym |  | TRO | 
	
		| Ruellia prostrata var. rivularis Benoist | Synonym |  | TRO | 
	
		| Ruellia proxima Lindau | Accepted |  | TRO | 
	
		| Ruellia pseudopatula Ensermu | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pterocaulon Leonard | Accepted |  | WCSP (in review) | 
	
		| Ruellia pubens Lindau | Unresolved |  | TRO | 
	
		| Ruellia puberula (Leonard) Tharp & F.A. Barkley | Accepted |  | TRO | 
	
		| Ruellia pubescens Pers. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pubiflora Griseb. | Synonym |  | WCSP (in review) | 
	
		| Ruellia pulchella Schott ex Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pulcherrima T.Anderson ex Hemsl. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pulverulenta Leonard | Accepted |  | WCSP (in review) | 
	
		| Ruellia pumila Pav. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia pumilio R.Br. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia punctata Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia purdieana Hook. | Synonym |  | TRO | 
	
		| Ruellia puri Mart. ex Nees | Accepted |  | TRO | 
	
		| Ruellia puri (Nees) Mart. ex B.D. Jacks. | Unresolved |  | TRO | 
	
		| Ruellia purpurea Sessé & Moc. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia purpuricaulis Wall. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia purshiana Fernald | Unresolved |  | WCSP (in review) | 
	
		| Ruellia putumayensis Leonard | Accepted |  | TRO | 
	
		| Ruellia pygmaea Donn. Sm. | Accepted |  | TRO | 
	
		| Ruellia quadranguiaris B.Heyne ex C.B.Clarke | Unresolved |  | WCSP (in review) | 
	
		| Ruellia quadrangularis Vell. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia quadrangularis Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia quadrifaria (Nees) Lindau | Synonym |  | TRO | 
	
		| Ruellia quadrifaria Wall. ex Nees | Synonym |  | TRO | 
	
		| Ruellia quadrisepala Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia quadrivalvis Buch.-Ham. | Synonym |  | TRO | 
	
		| Ruellia quaterna Thonn. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia quitensis Kunth | Synonym |  | TRO | 
	
		| Ruellia racemosa Roxb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia radicalis Buch.-Ham. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia radicans (Nees) Lindau | Synonym |  | TRO | 
	
		| Ruellia radiciflora Vahl ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia rasa Hiern | Unresolved |  | WCSP (in review) | 
	
		| Ruellia rauhii Wassh. | Accepted |  | TRO | 
	
		| Ruellia ravaccensis Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia reflexa Royle ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia reitzii Wassh. & L.B.Sm. | Accepted |  | WCSP (in review) | 
	
		| Ruellia reniformis Wall. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia repanda Blume | Unresolved |  | WCSP (in review) | 
	
		| Ruellia repanda L. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia repens Ruiz ex Nees | Synonym |  | TRO | 
	
		| Ruellia repens var. kouytcheensis H. Lév. | Synonym |  | TRO | 
	
		| Ruellia reptans G.Forst. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia retrofacta Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia rhamnifolia Willd. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia rhytiphylla Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia richardsiae Vollesen | Unresolved |  | WCSP (in review) | 
	
		| Ruellia ringens L. | Synonym |  | TRO | 
	
		| Ruellia riopalenquensis Wassh. | Synonym |  | TRO | 
	
		| Ruellia rivinifolia Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia rivularis B. Boivin | Synonym |  | TRO | 
	
		| Ruellia rivularis (Benoist) Boivin ex Benoist | Accepted |  | TRO | 
	
		| Ruellia rivularis Schltdl. | Synonym |  | TRO | 
	
		| Ruellia rohrii Vahl ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia rosea (Nees) Hemsl. | Accepted |  | TRO | 
	
		| Ruellia rotundifolia D.Don | Unresolved |  | WCSP (in review) | 
	
		| Ruellia rubicaulis Cav. | Synonym |  | TRO | 
	
		| Ruellia rubicunda Wight ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia rubiginosa Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia rubra Aubl. | Accepted |  | TRO | 
	
		| Ruellia rufescens Roth | Unresolved |  | WCSP (in review) | 
	
		| Ruellia rufipila Rizzini | Unresolved |  | WCSP (in review) | 
	
		| Ruellia ruiziana (Nees) Lindau | Accepted |  | TRO | 
	
		| Ruellia runyonii Tharp & F.A. Barkley | Accepted |  | TRO | 
	
		| Ruellia rupestris Sw. | Synonym |  | TRO | 
	
		| Ruellia rusbyi Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia ruspolii Lindau | Synonym |  | TRO | 
	
		| Ruellia russeliana Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia sabiniana Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia saccata | Unresolved |  | TRO | 
	
		| Ruellia saccifera Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia saeri Llamozas | Accepted |  | WCSP (in review) | 
	
		| Ruellia salicifolia Vahl | Unresolved |  | WCSP (in review) | 
	
		| Ruellia salicifolia Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia salicifolia Bojer ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia salmeronensis Llamozas | Accepted |  | WCSP (in review) | 
	
		| Ruellia sanguinea Griseb. | Accepted |  | TRO | 
	
		| Ruellia sarmentosa Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia sarukhaniana Ramamoorthy | Unresolved |  | WCSP (in review) | 
	
		| Ruellia satpoorensis Wawra | Unresolved |  | WCSP (in review) | 
	
		| Ruellia saulensis Wassh. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia saxicola Bojer ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia scabra Juss. ex Pers. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia scabra Gaudich. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia scabra Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia scabrida Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia scabrifolia Valeton | Synonym |  | TRO | 
	
		| Ruellia scabrosa Sw. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia scandens Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia scariosa Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia sceptrum-marianum (Vell.) Stearn | Unresolved |  | WCSP (in review) | 
	
		| Ruellia schaueriana (Nees) Lindau | Accepted |  | TRO | 
	
		| Ruellia schlechtendaliana (Nees) Hemsl. | Accepted |  | TRO | 
	
		| Ruellia schnellii Wassh. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia schottianus Lindau | Unresolved |  | TRO | 
	
		| Ruellia sclerochiton S. Moore | Synonym |  | TRO | 
	
		| Ruellia seclusa S.Moore | Unresolved |  | WCSP (in review) | 
	
		| Ruellia secunda Vahl | Unresolved |  | WCSP (in review) | 
	
		| Ruellia secunda Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia secunda Blanco | Unresolved |  | WCSP (in review) | 
	
		| Ruellia secunda Wight ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia secundiflora Bojer ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia sellowiana Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia semitetrandra Jacq. ex G.Don | Unresolved |  | WCSP (in review) | 
	
		| Ruellia serrata Thunb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia serratitheca Rusby | Synonym |  | WCSP (in review) | 
	
		| Ruellia sesamoides Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia sessilifolia Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia sessilis Balb. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia setigera Pers. | Unresolved |  | TRO | 
	
		| Ruellia shaferiana Urb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia siamensis J.B.Imlay | Unresolved |  | WCSP (in review) | 
	
		| Ruellia sibua Buch.-Ham. ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia silvaecola Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia simplex C.Wright | Accepted |  | WCSP (in review) | 
	
		| Ruellia sindica Ghafoor & Heine | Accepted |  | TRO | 
	
		| Ruellia singularis Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia siphonantha Hils. & Bojer ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia siraensis Wassh. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia socotrana Vierh. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia solitaria Vell. | Accepted |  | TRO | 
	
		| Ruellia somalensis Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia sororia Standl. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia spatulifolia Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia speciosa (Nees ex A. DC.) Lindau | Accepted |  | TRO | 
	
		| Ruellia spectabilis Britton [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Ruellia spectabilis (Hook.) G. Nicholson | Synonym |  | TRO | 
	
		| Ruellia spicata Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia spicata Roth | Unresolved |  | WCSP (in review) | 
	
		| Ruellia spicata Vell. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia spiciflora F.Muell. ex Benth. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia spinescens Thunb. | Synonym |  | TRO | 
	
		| Ruellia spissa Leonard | Accepted |  | TRO | 
	
		| Ruellia splendidula Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia sprucei Lindau | Accepted |  | WCSP (in review) | 
	
		| Ruellia squarrosa (Fenzl) Cufod. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia standleyi Leonard | Accepted |  | TRO | 
	
		| Ruellia stemonacanthoides (Oerst.) Hemsl. | Accepted |  | TRO | 
	
		| Ruellia stenophylla C.B.Clarke | Unresolved |  | WCSP (in review) | 
	
		| Ruellia steyermarkii Wassh. | Accepted |  | WCSP (in review) | 
	
		| Ruellia strepens L. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia strepens Forssk. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia strepens L.C.Beck | Unresolved |  | WCSP (in review) | 
	
		| Ruellia strepens Pav. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia strepens var. cleistantha A. Gray | Synonym |  | TRO | 
	
		| Ruellia strepens f. cleistantha (A. Gray) S. McCoy | Unresolved |  | TRO | 
	
		| Ruellia stricklandii (F.Muell.) Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia strictopaniculata Tharp & F.A.Barkley | Unresolved |  | WCSP (in review) | 
	
		| Ruellia strigosa Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia strobilina Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia stuebelii Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia suaveolens Span. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia subacaulis K.Koch & C.D.Bouché | Unresolved |  | WCSP (in review) | 
	
		| Ruellia subcapitata (Nees) Hemsl. | Accepted |  | TRO | 
	
		| Ruellia subdentata Klotzsch ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia subringens Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia subsericea Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia subsessilis Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia subulata J.B.Imlay | Unresolved |  | WCSP (in review) | 
	
		| Ruellia succulenta Small | Synonym |  | TRO | 
	
		| Ruellia sudanica Lindau ex Engl. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia suffruticosa Roxb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia suffruticosus Roxb. | Unresolved |  | TRO | 
	
		| Ruellia sumatrensis Roth | Unresolved |  | WCSP (in review) | 
	
		| Ruellia surinamensis Lindau | Unresolved |  | TRO | 
	
		| Ruellia syliaccola Lindau | Unresolved |  | TRO | 
	
		| Ruellia sylvaccola Mart. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia tanacetifolia Vahl ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia tarapotana Lindau | Accepted |  | TRO | 
	
		| Ruellia tentaculata L. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia tenuis Buch.-Ham. ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia terminale (Nees) Wassh. | Accepted |  | TRO | 
	
		| Ruellia tessmannii Mildbr. | Accepted |  | TRO | 
	
		| Ruellia tetragona Thunb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia tetragona Blume | Unresolved |  | WCSP (in review) | 
	
		| Ruellia tetragona Link | Unresolved |  | WCSP (in review) | 
	
		| Ruellia tetragona Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia tetragonostachya Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia tetrasperma Champ. ex Benth. | Synonym |  | TRO | 
	
		| Ruellia tetrastichantha Lindau | Synonym |  | WCSP (in review) | 
	
		| Ruellia thapsoides Lindau | Unresolved |  | TRO | 
	
		| Ruellia thomana Spreng. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia thunbergiaeflora T. Anderson | Synonym |  | TRO | 
	
		| Ruellia thymifolia Vahl ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia thyrsacanthoides (Nees) Lindau | Synonym |  | WCSP (in review) | 
	
		| Ruellia thyrsostachya Lindau | Synonym |  | TRO | 
	
		| Ruellia togoensis (Lindau) Heine | Accepted |  | TRO | 
	
		| Ruellia tolimensis Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia tomentosa Wall. | Synonym |  | TRO | 
	
		| Ruellia tonduzii Lindau | Synonym |  | TRO | 
	
		| Ruellia trachyphylla Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia transitoria Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia treubiana Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia trichotoma Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia triflora Roxb. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia triflora Sessé & Moc. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia triflora Pav. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia trinervis Buch.-Ham. ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia trivialis Blanch. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia tuberosa L. | Accepted |  | WCSP (in review) | 
	
		| Ruellia tuberosa var. occidentalis A. Gray | Synonym |  | TRO | 
	
		| Ruellia tubiflora Kunth | Accepted |  | WCSP (in review) | 
	
		| Ruellia tubiflora var. tetrastichantha (Lindau) Leonard | Accepted |  | WCSP (in review) | 
	
		| Ruellia tubulata Pav. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia turbacensis Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia turbaxensis (Nees) Benth. | Accepted |  | TRO | 
	
		| Ruellia turbinis Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia tuxtlensis Ramamoorthy & Y.H.Uribe | Unresolved |  | WCSP (in review) | 
	
		| Ruellia tweediana Griseb. | Accepted |  | TRO | 
	
		| Ruellia tweedii (Nees) T. Anderson ex Morong & Britton | Synonym |  | TRO | 
	
		| Ruellia tweedyi (Nees) T.Anderson ex Morong & Britton | Synonym |  | WCSP (in review) | 
	
		| Ruellia uliginosa Blanco | Unresolved |  | WCSP (in review) | 
	
		| Ruellia uliginosa Mart. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia uliginosa Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia uliginosa L.f. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia umbrosa Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia undulata Vis. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia undulata Vahl | Unresolved |  | WCSP (in review) | 
	
		| Ruellia upudalii B.Vogel | Unresolved |  | WCSP (in review) | 
	
		| Ruellia urens Roth | Synonym |  | TRO | 
	
		| Ruellia uribei Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia urophylla Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia urticifolia Wall. | Synonym |  | TRO | 
	
		| Ruellia ustulata Buch.-Ham. ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia variabilis Macrae ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia variabilis Zipp. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia varians Vent. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia varians B.Heyne ex Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia variegata Lubbers | Unresolved |  | WCSP (in review) | 
	
		| Ruellia velascana Lindau | Synonym |  | WCSP (in review) | 
	
		| Ruellia velutifolia (House) Wassh. & D.F. Austin | Synonym |  | TRO | 
	
		| Ruellia velutina PHILLIPS | Synonym |  | TRO | 
	
		| Ruellia venosa Blume | Unresolved |  | WCSP (in review) | 
	
		| Ruellia venosa B.Heyne ex C.B.Clarke | Unresolved |  | WCSP (in review) | 
	
		| Ruellia ventricosa Kunth [Illegitimate] | Synonym |  | WCSP (in review) | 
	
		| Ruellia venusta Hance | Synonym |  | TRO | 
	
		| Ruellia verbasciformis (Nees) C.Ezcurra & Zappi | Unresolved |  | WCSP (in review) | 
	
		| Ruellia verticillata Spreng. | Synonym |  | TRO | 
	
		| Ruellia verticilliflora Steud. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia vestita Engl. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia villanovensis Colla | Unresolved |  | WCSP (in review) | 
	
		| Ruellia villosa Pohl ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia villosa Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia vinciflora DC. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia vincoides Willd. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia vincta Benoist | Unresolved |  | WCSP (in review) | 
	
		| Ruellia vindea Lindau | Unresolved |  | TRO | 
	
		| Ruellia vindex (Nees) Lindau | Synonym |  | WCSP (in review) | 
	
		| Ruellia violacca Aubl. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia violacea Aubl. | Accepted |  | TRO | 
	
		| Ruellia viridiflora Leonard | Unresolved |  | WCSP (in review) | 
	
		| Ruellia viscidula Mart. ex Schrank | Unresolved |  | WCSP (in review) | 
	
		| Ruellia viscidula Lindau | Unresolved |  | WCSP (in review) | 
	
		| Ruellia viscosa Kunth | Synonym |  | TRO | 
	
		| Ruellia viscossisima (Nees) Lindau | Synonym |  | TRO | 
	
		| Ruellia viscosula Wall. ex Nees | Unresolved |  | WCSP (in review) | 
	
		| Ruellia wightiana Wall. | Unresolved |  | WCSP (in review) | 
	
		| Ruellia willdenoviana (Nees) Lindau ex Rusby | Accepted |  | TRO | 
	
		| Ruellia williamsii Leonard | Synonym |  | TRO | 
	
		| Ruellia woodii C.B.Clarke | Unresolved |  | WCSP (in review) | 
	
		| Ruellia woolstonii C. Ezcurra | Accepted |  | TRO | 
	
		| Ruellia wurdackii Wassh. | Accepted |  | WCSP (in review) | 
	
		| Ruellia yucatana (Leonard) Tharp & F.A. Barkley | Synonym |  | TRO | 
	
		| Ruellia yurimaguensis Lindau | Accepted |  | TRO | 
	
		| Ruellia zeyheri T. Anders. | Synonym |  | TRO | 
	
		| Ruellia zeylanica K.D.Koenig ex Roxb. | Unresolved |  | WCSP (in review) |