| Masdevallia abbreviata Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia acaroi Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia acrochordonia Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia adamsii Luer | Accepted |  | WCSP | 
	
		| Masdevallia adrianae Luer | Accepted |  | WCSP | 
	
		| Masdevallia aenigma Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia aequatorialis F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia aequiloba Regel | Synonym |  | WCSP | 
	
		| Masdevallia affinis Lindl. | Synonym |  | WCSP | 
	
		| Masdevallia affinis subsp. affinis | Synonym |  | TRO | 
	
		| Masdevallia affinis subsp. maculigera (Schltr.) Luer | Synonym |  | WCSP | 
	
		| Masdevallia affinis subsp. petiolaris (Schltr.) Luer | Synonym |  | WCSP | 
	
		| Masdevallia agaster Luer | Accepted |  | WCSP | 
	
		| Masdevallia aguirrei Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia akemiana Königer & Sijm | Accepted |  | WCSP | 
	
		| Masdevallia albella Luer & Teague | Accepted |  | WCSP | 
	
		| Masdevallia albicans Luer | Synonym |  | WCSP | 
	
		| Masdevallia albida Pinel ex Lem. | Synonym |  | WCSP | 
	
		| Masdevallia alexandri Luer | Accepted |  | WCSP | 
	
		| Masdevallia alismifolia Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia allenii L.O.Williams | Synonym |  | WCSP | 
	
		| Masdevallia × alvaroi Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia amabilis Rchb.f. & Warsz. | Accepted |  | WCSP | 
	
		| Masdevallia amabilis f. flammula (H.Mohr & Braas) O.Gruss & M.Wolff | Synonym |  | WCSP | 
	
		| Masdevallia amabilis var. lineata Linden & André | Synonym |  | WCSP | 
	
		| Masdevallia amaluzae Luer & Malo | Accepted |  | WCSP | 
	
		| Masdevallia amanda Rchb.f. & Warsz. | Accepted |  | WCSP | 
	
		| Masdevallia ambylantha Kraenzl. | Unresolved |  | TRO | 
	
		| Masdevallia amethystina Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia ametroglossa Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia amoena Luer | Accepted |  | WCSP | 
	
		| Masdevallia amplexa Luer | Accepted |  | WCSP | 
	
		| Masdevallia ampulana Luer & Hirtz | Unresolved |  | TRO | 
	
		| Masdevallia ampullacea Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia anachaeta Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia anaristella Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia anceps Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia anchorifera Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia andreae P.Ortiz | Unresolved |  | WCSP (in review) | 
	
		| Masdevallia andreettae Luer | Synonym |  | WCSP | 
	
		| Masdevallia andreettana Luer | Accepted |  | WCSP | 
	
		| Masdevallia andresiana Luer & Maduro | Accepted |  | WCSP | 
	
		| Masdevallia anemone Luer | Accepted |  | WCSP | 
	
		| Masdevallia anfracta Königer & J.Portilla | Accepted |  | WCSP | 
	
		| Masdevallia angulata Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia angulifera Rchb.f. ex Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia anisomorpha Garay | Accepted |  | WCSP | 
	
		| Masdevallia anomala Luer & Sijm | Accepted |  | WCSP | 
	
		| Masdevallia antioquiensis F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia antonii Königer | Accepted |  | WCSP | 
	
		| Masdevallia anura Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia aops Luer & Malo | Synonym |  | WCSP | 
	
		| Masdevallia aperta Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia aphanes Königer | Accepted |  | WCSP | 
	
		| Masdevallia apparitio Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia aptera Luer & L.O'Shaughn. | Accepted |  | WCSP | 
	
		| Masdevallia arangoi Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia argus Rchb.f. ex Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia ariasii Luer | Accepted |  | WCSP | 
	
		| Masdevallia aristata Barb.Rodr. | Synonym |  | WCSP | 
	
		| Masdevallia arminii Linden & Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia aspera Rchb.f. ex Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia asperrima Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia assurgens Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia asterotricha Königer | Accepted |  | WCSP | 
	
		| Masdevallia astuta Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia atahualpa Luer | Accepted |  | WCSP | 
	
		| Masdevallia atropurpurea Rchb.f. [Spelling variant] | Synonym |  | WCSP | 
	
		| Masdevallia atroviolacea Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia attenuata Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia audax Königer | Accepted |  | WCSP | 
	
		| Masdevallia aurantiaca Lindl. | Synonym |  | WCSP | 
	
		| Masdevallia aurea Luer | Accepted |  | WCSP | 
	
		| Masdevallia aureodactyla Luer | Synonym |  | WCSP | 
	
		| Masdevallia aureorosea Weberb. [Invalid] | Synonym |  | WCSP | 
	
		| Masdevallia auriculigera (Rchb.f.) Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia auropurpurea Rchb.f. & Warsz. | Synonym |  | WCSP | 
	
		| Masdevallia aurorae Luer & M.W.Chase | Accepted |  | WCSP | 
	
		| Masdevallia aviceps (Rchb.f.) Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia ayabacana Luer | Accepted |  | WCSP | 
	
		| Masdevallia backhousiana Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia bangii Schltr. | Accepted |  | WCSP | 
	
		| Masdevallia barlaeana Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia barrowii Luer | Accepted |  | WCSP | 
	
		| Masdevallia bathyschista Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia bella Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia belua Königer & D'Aless. | Accepted |  | WCSP | 
	
		| Masdevallia benedictii Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia bennettii Luer | Accepted |  | WCSP | 
	
		| Masdevallia berthae Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia bicolor Poepp. & Endl. | Accepted |  | WCSP | 
	
		| Masdevallia bicornis Luer | Accepted |  | WCSP | 
	
		| Masdevallia biflora Regel | Accepted |  | WCSP | 
	
		| Masdevallia biflora E.Morren [Invalid] | Synonym |  | WCSP | 
	
		| Masdevallia bilabiata (Kraenzl.) Garay | Synonym |  | WCSP | 
	
		| Masdevallia blanda Königer & J.Portilla | Synonym |  | WCSP | 
	
		| Masdevallia boddaertii Linden ex André | Synonym |  | WCSP | 
	
		| Masdevallia bogotensis Gentil [Invalid] | Synonym |  | WCSP | 
	
		| Masdevallia boliviensis Schltr. | Accepted |  | WCSP | 
	
		| Masdevallia boliviensis subsp. leucophaea (Luer & R.Vásquez) Luer | Accepted |  | WCSP | 
	
		| Masdevallia bomboiza M. Fiske | Synonym |  | TRO | 
	
		| Masdevallia bonplandii Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia borucana P.H.Allen | Synonym |  | WCSP | 
	
		| Masdevallia bottae Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia bourdetteana Luer | Accepted |  | WCSP | 
	
		| Masdevallia braasii H.Mohr | Synonym |  | WCSP | 
	
		| Masdevallia brachyantha Schltr. | Accepted |  | WCSP | 
	
		| Masdevallia brachyura F.Lehm. & Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia bradei Schltr. ex Hoehne | Synonym |  | WCSP | 
	
		| Masdevallia brenneri Luer | Accepted |  | WCSP | 
	
		| Masdevallia brevis Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia brockmuelleri Luer | Accepted |  | WCSP | 
	
		| Masdevallia bruchmulleri E.Morren | Synonym |  | WCSP | 
	
		| Masdevallia bryophila Luer | Accepted |  | WCSP | 
	
		| Masdevallia buccinator Rchb.f. & Warsz. | Accepted |  | WCSP | 
	
		| Masdevallia bucculenta Luer | Accepted |  | WCSP | 
	
		| Masdevallia buchtienii Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia bulbophyllopsis Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia burbidgeana Rolfe | Synonym |  | WCSP | 
	
		| Masdevallia burfordiensis O'Brien | Synonym |  | WCSP | 
	
		| Masdevallia burianii Luer & Dalström | Accepted |  | WCSP | 
	
		| Masdevallia burzlaffiana Königer | Accepted |  | WCSP | 
	
		| Masdevallia butcheri Luer | Synonym |  | WCSP | 
	
		| Masdevallia cacodes Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia caesia Roezl | Accepted |  | WCSP | 
	
		| Masdevallia calagrasalis Luer | Accepted |  | WCSP | 
	
		| Masdevallia calcarata Luer & V.N.M.Rao | Accepted |  | WCSP | 
	
		| Masdevallia callifera Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia calocalix Luer | Accepted |  | WCSP | 
	
		| Masdevallia calocodon Luer & R.Vásquez | Synonym |  | WCSP | 
	
		| Masdevallia caloptera Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia calopterocarpa Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia calosiphon Luer | Synonym |  | WCSP | 
	
		| Masdevallia calura Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia calyptrata Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia campyloglossa Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia campyloglossa subsp. ortgiesiana (Rolfe) Luer | Synonym |  | WCSP | 
	
		| Masdevallia candida Klotzsch & H.Karst. ex Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia capillaris Luer | Synonym |  | WCSP | 
	
		| Masdevallia carderi Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia carderi var. mosquerae Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia carderiopsis F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia cardiantha Königer | Accepted |  | WCSP | 
	
		| Masdevallia carinata Cogn. | Synonym |  | WCSP | 
	
		| Masdevallia carmenensis Luer & Malo | Accepted |  | WCSP | 
	
		| Masdevallia carnosa Königer | Accepted |  | WCSP | 
	
		| Masdevallia carolloi Luer & Andreetta | Synonym |  | WCSP | 
	
		| Masdevallia carpishica Luer & Cloes | Accepted |  | WCSP | 
	
		| Masdevallia carpophora Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia carrilloana P.Ortiz | Unresolved |  | WCSP (in review) | 
	
		| Masdevallia carruthersiana F.Lehm. ex Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia carruthersiana var. torulosa (Königer & J.Portilla) O.Gruss & M.Wolff | Synonym |  | WCSP | 
	
		| Masdevallia × cassiope auct. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia casta Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia castor Luer & Cloes | Accepted |  | WCSP | 
	
		| Masdevallia catapheres Königer | Accepted |  | WCSP | 
	
		| Masdevallia caudata Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia caudata var. shuttleworthii (Rchb.f.) Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia caudata var. xanthocorys (Rchb.f.) A.H.Kent | Synonym |  | WCSP | 
	
		| Masdevallia caudata f. xanthocorys (Rchb.f.) O.Gruss & M.Wolff | Synonym |  | WCSP | 
	
		| Masdevallia caudivolvula Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia cayennensis Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia cerastes Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia chaetostoma Luer | Accepted |  | WCSP | 
	
		| Masdevallia chantansii Rchb. f. | Unresolved |  | TRO | 
	
		| Masdevallia chaparensis T.Hashim. | Accepted |  | WCSP | 
	
		| Masdevallia chasei Luer | Accepted |  | WCSP | 
	
		| Masdevallia chaucana Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia cheloglossa Luer & Dalström | Accepted |  | WCSP | 
	
		| Masdevallia × chelsonii Rchb.f. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia chestertonii Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia chiguindensis Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia chimaera Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia chimaera André [Illegitimate] | Synonym |  | WCSP | 
	
		| Masdevallia chimaera var. backhousiana (Rchb.f.) A.H.Kent | Synonym |  | WCSP | 
	
		| Masdevallia chimaera var. gorgona A.H.Kent | Synonym |  | WCSP | 
	
		| Masdevallia chimaera var. robledorum P.Ortiz | Synonym |  | WCSP | 
	
		| Masdevallia chimaera var. roezlii (Rchb.f.) A.H.Kent | Synonym |  | WCSP | 
	
		| Masdevallia chimaera var. senilis (Rchb.f.) A.H.Kent | Synonym |  | WCSP | 
	
		| Masdevallia chimaera var. severa (Rchb.f.) A.H.Kent | Synonym |  | WCSP | 
	
		| Masdevallia chimaera var. stupenda (Rchb.f.) Stein | Synonym |  | WCSP | 
	
		| Masdevallia chimaera var. wallisii (Rchb.f.) A.H.Kent | Synonym |  | WCSP | 
	
		| Masdevallia chimaera var. winniana (Rchb.f.) A.H.Kent | Synonym |  | WCSP | 
	
		| Masdevallia chimboensis Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia chiquindensis Kraenzl. | Synonym |  | TRO | 
	
		| Masdevallia chloracra Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia chlorotica Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia chontalensis Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia chrysochaete F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia chrysoneura F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia chuspipatae Luer & Teague | Accepted |  | WCSP | 
	
		| Masdevallia cinnamomea Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia citrinella Luer & Malo | Accepted |  | WCSP | 
	
		| Masdevallia civilis Rchb.f. & Warsz. | Accepted |  | WCSP | 
	
		| Masdevallia clandestina Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia cleistogama Luer | Accepted |  | WCSP | 
	
		| Masdevallia cloesii Luer | Accepted |  | WCSP | 
	
		| Masdevallia cocapatae Luer, Teague & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia coccinea Linden ex Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia coccinea var. conchiflora A.H.Kent | Synonym |  | WCSP | 
	
		| Masdevallia coccinea var. harryana (Rchb.f.) A.H.Kent | Synonym |  | WCSP | 
	
		| Masdevallia coccinea var. lindenii Stein | Synonym |  | WCSP | 
	
		| Masdevallia coccinea var. militaris (Rchb.f. & Warsz.) O.Gruss & M.Wolff | Synonym |  | WCSP | 
	
		| Masdevallia colibri Burb. [Invalid] | Synonym |  | WCSP | 
	
		| Masdevallia collantesii D.E.Benn. & Christenson | Accepted |  | WCSP | 
	
		| Masdevallia collina L.O.Williams | Accepted |  | WCSP | 
	
		| Masdevallia collina var. macrogenia Arango | Synonym |  | WCSP | 
	
		| Masdevallia colombiana (Schltr.) P.H.Allen | Synonym |  | WCSP | 
	
		| Masdevallia colossus Luer | Accepted |  | WCSP | 
	
		| Masdevallia concinna Königer | Accepted |  | WCSP | 
	
		| Masdevallia condorensis Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia confusa Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia constricta Poepp. & Endl. | Accepted |  | WCSP | 
	
		| Masdevallia copiosa Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia corazonica Schltr. | Accepted |  | WCSP | 
	
		| Masdevallia cordeliana Luer | Accepted |  | WCSP | 
	
		| Masdevallia corderoana F.Lehm. & Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia coriacea Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia coriacea subsp. bonplandii (Rchb.f.) Luer | Synonym |  | WCSP | 
	
		| Masdevallia coriacea var. bonplandii (Rchb. f.) Luer | Synonym |  | TRO | 
	
		| Masdevallia coriacea var. coriacea | Synonym |  | TRO | 
	
		| Masdevallia corniculata Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia corniculata var. inflata (Rchb.f.) A.H.Kent | Synonym |  | WCSP | 
	
		| Masdevallia cosmia Königer | Accepted |  | WCSP | 
	
		| Masdevallia costaricensis Rolfe | Synonym |  | WCSP | 
	
		| Masdevallia × courtauldiana auct. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia cranion Luer | Accepted |  | WCSP | 
	
		| Masdevallia crassicaudis Luer & J.Portilla | Accepted |  | WCSP | 
	
		| Masdevallia crassicaulis Luer & J.J. Portilla | Unresolved |  | TRO | 
	
		| Masdevallia crenulata Pabst | Synonym |  | WCSP | 
	
		| Masdevallia crescenticola F.Lehm. & Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia cretata Luer | Accepted |  | WCSP | 
	
		| Masdevallia cryptocopis Rchb.f. ex Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia cucullata Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia cucutillensis Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia culex Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia cuprea Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia cuprea subsp. hepatica (Luer) Luer | Synonym |  | WCSP | 
	
		| Masdevallia cupularis Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia curtipes Barb.Rodr. | Accepted |  | WCSP | 
	
		| Masdevallia cyathogastra Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia cyclotega Königer | Accepted |  | WCSP | 
	
		| Masdevallia cylix Luer & Malo | Accepted |  | WCSP | 
	
		| Masdevallia dalessandroi Luer | Accepted |  | WCSP | 
	
		| Masdevallia dalstroemii Luer | Accepted |  | WCSP | 
	
		| Masdevallia datura Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia davisii Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia dayana Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia deceptrix Luer & Würstle | Accepted |  | WCSP | 
	
		| Masdevallia decumana Königer | Accepted |  | WCSP | 
	
		| Masdevallia deformis Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia deformis f. exaltata (Luer) O.Gruss & M.Wolff | Synonym |  | WCSP | 
	
		| Masdevallia delhierroi Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia delphina Luer | Accepted |  | WCSP | 
	
		| Masdevallia deltoidea Luer | Synonym |  | WCSP | 
	
		| Masdevallia demissa Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia demissa var. superflua (Kraenzl.) Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia deniseana Luer & J.Portilla | Accepted |  | WCSP | 
	
		| Masdevallia denisonii Dombrain | Synonym |  | WCSP | 
	
		| Masdevallia densiflora Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia deorsum Rolfe | Synonym |  | WCSP | 
	
		| Masdevallia dermatantha Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia descendens Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia diantha Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia didyma Luer | Synonym |  | WCSP | 
	
		| Masdevallia dimorphotricha Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia discoidea Luer & Würstle | Accepted |  | WCSP | 
	
		| Masdevallia discolor Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia dispar Luer | Synonym |  | WCSP | 
	
		| Masdevallia diversifolia Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia dodsonii Luer | Synonym |  | WCSP | 
	
		| Masdevallia dolichopoda Luer | Synonym |  | WCSP | 
	
		| Masdevallia don-quijote Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia dorisiae Luer | Accepted |  | WCSP | 
	
		| Masdevallia draconis Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia dreisei Luer | Accepted |  | WCSP | 
	
		| Masdevallia dressleri Luer | Synonym |  | WCSP | 
	
		| Masdevallia dryada Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia dubbeldamii Luer & Sijm | Accepted |  | WCSP | 
	
		| Masdevallia dudleyi Luer | Accepted |  | WCSP | 
	
		| Masdevallia dunstervillei Luer | Accepted |  | WCSP | 
	
		| Masdevallia dura Luer | Accepted |  | WCSP | 
	
		| Masdevallia dynastes Luer | Accepted |  | WCSP | 
	
		| Masdevallia eburnea Luer & Maduro | Accepted |  | WCSP | 
	
		| Masdevallia ecaudata Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia echidna Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia echinata Luer & Andreetta | Synonym |  | WCSP | 
	
		| Masdevallia echinocarpa Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia echo Luer | Accepted |  | WCSP | 
	
		| Masdevallia eclyptrata Kraenzl. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia eduardii Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia edwallii Cogn. | Synonym |  | WCSP | 
	
		| Masdevallia ejiriana Luer & J.Portilla | Accepted |  | WCSP | 
	
		| Masdevallia elachys Luer | Accepted |  | WCSP | 
	
		| Masdevallia elata Luer | Synonym |  | WCSP | 
	
		| Masdevallia elegans Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia elephanticeps Rchb.f. & Warsz. | Accepted |  | WCSP | 
	
		| Masdevallia elephanticeps var. pachysepala Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia elephanticeps f. pachysepala (Rchb.f.) O.Gruss & M.Wolff | Synonym |  | WCSP | 
	
		| Masdevallia ellipes Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia × ellisiana auct. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia empusa Luer | Accepted |  | WCSP | 
	
		| Masdevallia encephala Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia endotrachys Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia ensata Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia epallax Königer | Accepted |  | WCSP | 
	
		| Masdevallia ephelota Luer & Cloes | Accepted |  | WCSP | 
	
		| Masdevallia ephippium Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia ephippium var. acrochordonia (Rchb.f.) Woolward | Synonym |  | WCSP | 
	
		| Masdevallia erinacea Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia erythrochaete Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia erythrochaete var. astuta (Rchb.f.) Woolward | Synonym |  | WCSP | 
	
		| Masdevallia erythrochaete var. gaskelliana (Rchb.f.) Woolward | Synonym |  | WCSP | 
	
		| Masdevallia espirito-santensis Pabst | Synonym |  | WCSP | 
	
		| Masdevallia estradae Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia estradae var. delicata Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia estradae var. ludibunda (Rchb.f.) Woolward | Synonym |  | WCSP | 
	
		| Masdevallia estradae var. xanthina (Rchb.f.) A.H.Kent | Synonym |  | WCSP | 
	
		| Masdevallia eucharis Luer | Accepted |  | WCSP | 
	
		| Masdevallia eumeces Luer | Accepted |  | WCSP | 
	
		| Masdevallia eumeliae Luer | Accepted |  | WCSP | 
	
		| Masdevallia eurynogaster Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia exaltata Luer | Synonym |  | WCSP | 
	
		| Masdevallia excelsior Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia exigua Ames & C.Schweinf. | Synonym |  | WCSP | 
	
		| Masdevallia exilipes Schltr. | Accepted |  | WCSP | 
	
		| Masdevallia expansa Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia expers Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia exquisita Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia falcago Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia × falcata O'Brien [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia fasciata Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia felix Luer | Synonym |  | WCSP | 
	
		| Masdevallia fenestrata Lindl. ex Hook. | Synonym |  | WCSP | 
	
		| Masdevallia fenestrata Linden | Synonym |  | TRO | 
	
		| Masdevallia fertilis Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia figueroae Luer | Accepted |  | WCSP | 
	
		| Masdevallia filamentosa Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia filaria Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia fimbriata Ames & C.Schweinf. | Synonym |  | WCSP | 
	
		| Masdevallia fissa Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia flaccida Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia flammula H.Mohr & Braas | Synonym |  | WCSP | 
	
		| Masdevallia flaveola Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia floribunda Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia floribunda f. lindeniana (A.Rich. & Galeotti) O.Gruss & M.Wolff | Synonym |  | WCSP | 
	
		| Masdevallia floribunda subsp. tuerckheimii (Ames) Luer | Synonym |  | WCSP | 
	
		| Masdevallia floribunda var. tuerckheimii (Ames) O.Gruss & M.Wolff | Synonym |  | WCSP | 
	
		| Masdevallia foeda Luer & R.Vásquez | Synonym |  | WCSP | 
	
		| Masdevallia foetens Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia fonsecae Königer | Synonym |  | WCSP | 
	
		| Masdevallia forgetiana Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia formosa Luer & Cloes | Accepted |  | WCSP | 
	
		| Masdevallia fosterae Luer | Accepted |  | WCSP | 
	
		| Masdevallia fractiflexa F.Lehm. & Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia fragrans Woolward | Synonym |  | WCSP | 
	
		| Masdevallia × fraseri Rchb.f. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia frilehmannii Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia frontinoensis Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia fuchsii Luer | Accepted |  | WCSP | 
	
		| Masdevallia fuliginosa Luer | Synonym |  | WCSP | 
	
		| Masdevallia fulvescens Rolfe | Accepted |  | WCSP | 
	
		| Masdevallia funebris Endres ex Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia × gairiana Rchb.f. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia galeottiana A.Rich. & Galeotti | Synonym |  | WCSP | 
	
		| Masdevallia garciae Luer | Accepted |  | WCSP | 
	
		| Masdevallia gargantua Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia gaskelliana Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia gastrodea Luer | Unresolved |  | TRO | 
	
		| Masdevallia gastrodes Luer & Sijm | Accepted |  | WCSP | 
	
		| Masdevallia × geleniana Rchb.f. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia geminiflora P.Ortiz | Accepted |  | WCSP | 
	
		| Masdevallia gemmata Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia gerlachii Königer | Synonym |  | WCSP | 
	
		| Masdevallia gibberosa Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia gigas Luer & Andreetta | Synonym |  | WCSP | 
	
		| Masdevallia gilbertoi Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia glandulosa Königer | Accepted |  | WCSP | 
	
		| Masdevallia × glaphyrantha Rchb.f. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia glomerosa Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia gloriae Luer & Maduro | Accepted |  | WCSP | 
	
		| Masdevallia glossacles Luer | Synonym |  | WCSP | 
	
		| Masdevallia gnoma H.R.Sweet | Accepted |  | WCSP | 
	
		| Masdevallia goliath Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia gomes-ferreirae Pabst | Synonym |  | WCSP | 
	
		| Masdevallia gomeziana F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia gorgo Rchb.f. ex Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia gorgona hort. ex H.J. Veitch | Synonym |  | TRO | 
	
		| Masdevallia gracilenta Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia gracilior Königer & J.Portilla | Synonym |  | WCSP | 
	
		| Masdevallia graminea Luer | Accepted |  | WCSP | 
	
		| Masdevallia grandiflora C.Schweinf. | Synonym |  | WCSP | 
	
		| Masdevallia grossa Luer | Synonym |  | WCSP | 
	
		| Masdevallia guatemalensis Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia guayanensis Lindl. ex Benth. | Accepted |  | WCSP | 
	
		| Masdevallia guerrieroi Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia gustavii Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia gutierrezii Luer | Accepted |  | WCSP | 
	
		| Masdevallia guttulata Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia haematosticta Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia hajekii Luer | Synonym |  | WCSP | 
	
		| Masdevallia harlequina Luer | Accepted |  | WCSP | 
	
		| Masdevallia harryana Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia harryana var. atrosanguinea B.S.Williams & T.Moore | Synonym |  | WCSP | 
	
		| Masdevallia harryana var. decora B.S.Williams | Synonym |  | WCSP | 
	
		| Masdevallia harryana var. miniata B.S.Williams & T.Moore | Synonym |  | WCSP | 
	
		| Masdevallia hartman-filii Luer, Hirtz & V.N.M.Rao | Accepted |  | WCSP | 
	
		| Masdevallia hartmanii Luer | Accepted |  | WCSP | 
	
		| Masdevallia heathii auct. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia heideri Königer | Accepted |  | WCSP | 
	
		| Masdevallia helenae Luer | Accepted |  | WCSP | 
	
		| Masdevallia helgae Königer & J.Portilla | Accepted |  | WCSP | 
	
		| Masdevallia henniae Luer & Dalström | Accepted |  | WCSP | 
	
		| Masdevallia × henrietta auct. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia hepatica Luer | Synonym |  | WCSP | 
	
		| Masdevallia hercules Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia herradurae F.Lehm. & Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia herzogii Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia heteroptera Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia heterotepala Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia hians Linden & Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia hieroglyphica Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia × hincksiana Rchb.f. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia hirtzii Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia hoeijeri Luer & Hirtz | Synonym |  | WCSP | 
	
		| Masdevallia hoppii Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia hornii Königer | Synonym |  | WCSP | 
	
		| Masdevallia horrida Teusch. & Garay | Synonym |  | WCSP | 
	
		| Masdevallia hortensis Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia houtteana Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia hubeinii Luer & Würstle | Accepted |  | WCSP | 
	
		| Masdevallia hubschii Rchb. f. | Unresolved |  | TRO | 
	
		| Masdevallia huebneri Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia huebschiana Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia humilis Luer | Synonym |  | WCSP | 
	
		| Masdevallia hydrae Luer | Accepted |  | WCSP | 
	
		| Masdevallia hylodes Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia hymenantha Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia hypodiscus Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia hystrix Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia icterina Königer | Accepted |  | WCSP | 
	
		| Masdevallia idae Luer & M.Arias | Accepted |  | WCSP | 
	
		| Masdevallia ignea Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia ignea var. armeniaca B.S.Williams | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. aurantiaca B.S.Williams | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. boddaertii Linden ex André | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. citrina Stein | Synonym |  | WCSP | 
	
		| Masdevallia ignea f. citrina (Stein) O.Gruss & M.Wolff | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. coccinea Stein | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. goorii Sander | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. grandiflora B.S.Williams | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. hobartii Stein | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. marschalliana Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. massangeana B.S.Williams | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. pulchra Vuylsteke ex Cogn. | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. rubescens Linden ex Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. splendens Stein | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. stobartiana Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. superba Linden ex Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. tomasonii Gentil | Synonym |  | WCSP | 
	
		| Masdevallia ignea var. vuylstekeana Cogn. | Synonym |  | WCSP | 
	
		| Masdevallia immensa Luer | Accepted |  | WCSP | 
	
		| Masdevallia impostor Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia inaequalis Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia inamoena F. Lehm. & Kraenzl. | Unresolved |  | TRO | 
	
		| Masdevallia indecora Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia inflata Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia infracta Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia infracta var. aristata (Barb.Rodr.) Cogn. | Synonym |  | WCSP | 
	
		| Masdevallia infracta subsp. curtipes (Barb.Rodr.) Luer | Synonym |  | WCSP | 
	
		| Masdevallia infracta subsp. obscurans Luer | Synonym |  | WCSP | 
	
		| Masdevallia infracta subsp. oscitans Luer | Synonym |  | WCSP | 
	
		| Masdevallia ingridiana Luer & J.Portilla | Accepted |  | WCSP | 
	
		| Masdevallia instar Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia invenusta Luer | Synonym |  | WCSP | 
	
		| Masdevallia ionocharis Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia ionocharis var. approviata Woolward | Synonym |  | WCSP | 
	
		| Masdevallia irapana H.R.Sweet | Accepted |  | WCSP | 
	
		| Masdevallia iricolor Rchb.f. ex Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia iris Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia irunogaster Luer | Unresolved |  | TRO | 
	
		| Masdevallia ishikoi Luer | Accepted |  | WCSP | 
	
		| Masdevallia isos Luer | Accepted |  | WCSP | 
	
		| Masdevallia ivanii Luer & V.N.M.Rao | Accepted |  | WCSP | 
	
		| Masdevallia jalapensis Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia janetiae Luer | Synonym |  | WCSP | 
	
		| Masdevallia jarae Luer | Accepted |  | WCSP | 
	
		| Masdevallia jimenezii Königer | Synonym |  | WCSP | 
	
		| Masdevallia johannis Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia josei Luer | Accepted |  | WCSP | 
	
		| Masdevallia juan-albertoi Luer & M.Arias | Accepted |  | WCSP | 
	
		| Masdevallia jubar Luer & Malo | Synonym |  | WCSP | 
	
		| Masdevallia kalbreyeri Rchb.f. ex Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia karineae Nauray ex Luer | Accepted |  | WCSP | 
	
		| Masdevallia kautskyi Pabst | Synonym |  | WCSP | 
	
		| Masdevallia klabochorum Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia kuhniorum Luer | Accepted |  | WCSP | 
	
		| Masdevallia kyphonantha H.R.Sweet | Accepted |  | WCSP | 
	
		| Masdevallia lactea Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia laevis Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia lamia Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia lamprotyria Königer | Accepted |  | WCSP | 
	
		| Masdevallia lankesteriana Luer | Accepted |  | WCSP | 
	
		| Masdevallia lansbergii Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia lappacea F. Lehm. & Kraenzl. | Unresolved |  | TRO | 
	
		| Masdevallia lappifera Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia lata Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia laucheana J.Fraser | Accepted |  | WCSP | 
	
		| Masdevallia laucheana Kraenzl. ex Woolward | Synonym |  | TRO | 
	
		| Masdevallia lawrencei Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia leathersii Luer | Accepted |  | WCSP | 
	
		| Masdevallia lehmannii Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia lenae Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia leonardoi Luer | Accepted |  | WCSP | 
	
		| Masdevallia leonii D.E.Benn. & Christenson | Accepted |  | WCSP | 
	
		| Masdevallia leontoglossa Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia lepida Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia leptoura Luer | Accepted |  | WCSP | 
	
		| Masdevallia leucantha F.Lehm. & Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia leucophaea Luer & R.Vásquez | Synonym |  | WCSP | 
	
		| Masdevallia lewisii Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia × ligiae Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia lilacina Königer | Accepted |  | WCSP | 
	
		| Masdevallia lilianae Luer | Accepted |  | WCSP | 
	
		| Masdevallia lilliputiana Cogn. | Synonym |  | WCSP | 
	
		| Masdevallia lima F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia limax Luer | Accepted |  | WCSP | 
	
		| Masdevallia limax subsp. maxilimax Luer | Synonym |  | WCSP | 
	
		| Masdevallia lindeniana A.Rich. & Galeotti | Synonym |  | WCSP | 
	
		| Masdevallia lindenii André | Synonym |  | WCSP | 
	
		| Masdevallia lindenii var. grandiflora L.Linden & Rodigas | Synonym |  | WCSP | 
	
		| Masdevallia lindenii var. harryana (Rchb.f.) André | Synonym |  | WCSP | 
	
		| Masdevallia linearifolia Ames | Synonym |  | WCSP | 
	
		| Masdevallia lineolata Königer | Accepted |  | WCSP | 
	
		| Masdevallia lintricula Königer | Accepted |  | WCSP | 
	
		| Masdevallia listroglossa Luer & Dalström | Accepted |  | WCSP | 
	
		| Masdevallia livingstoneana Roezl & Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia longicaudata Lem. | Synonym |  | WCSP | 
	
		| Masdevallia longiflora Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia lotax Luer | Synonym |  | WCSP | 
	
		| Masdevallia loui Luer & Dalström | Accepted |  | WCSP | 
	
		| Masdevallia lowii Rolfe | Synonym |  | WCSP | 
	
		| Masdevallia lucernula Königer | Accepted |  | WCSP | 
	
		| Masdevallia ludibunda Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia ludibundella Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia luziaemariae Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia lychniphora Königer | Accepted |  | WCSP | 
	
		| Masdevallia lynchiphora Königer | Accepted |  | TRO | 
	
		| Masdevallia lynniana Luer | Accepted |  | WCSP | 
	
		| Masdevallia macrochila Regel | Synonym |  | WCSP | 
	
		| Masdevallia macrodactyla Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia macrogenia (Arango) Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia macroglossa Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia macropus F.Lehm. & Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia macrura Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia maculata Klotzsch & H.Karst. | Accepted |  | WCSP | 
	
		| Masdevallia maculata f. flava (Stein) Christenson | Synonym |  | WCSP | 
	
		| Masdevallia maculata var. flava Stein | Synonym |  | WCSP | 
	
		| Masdevallia maculigera Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia × macvitiae J.Thomson [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia maduroi Luer | Accepted |  | WCSP | 
	
		| Masdevallia magaliana Luer & V.N.M.Rao | Accepted |  | WCSP | 
	
		| Masdevallia mallii Luer | Accepted |  | WCSP | 
	
		| Masdevallia maloi Luer | Synonym |  | WCSP | 
	
		| Masdevallia manarana Carnevali & I.Ramírez | Synonym |  | WCSP | 
	
		| Masdevallia manchinazae Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia mandarina (Luer & R.Escobar) Luer | Accepted |  | WCSP | 
	
		| Masdevallia manningii Königer | Accepted |  | WCSP | 
	
		| Masdevallia manoloi Luer & M.Arias | Accepted |  | WCSP | 
	
		| Masdevallia manta Königer & Sijm | Accepted |  | WCSP | 
	
		| Masdevallia margaretae Luer | Synonym |  | WCSP | 
	
		| Masdevallia marginella Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia marizae Luer & Rolando | Accepted |  | WCSP | 
	
		| Masdevallia marthae Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia martineae Luer | Accepted |  | WCSP | 
	
		| Masdevallia martiniana Luer | Accepted |  | WCSP | 
	
		| Masdevallia mascarata Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia mastodon Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia mataxa Königer & H.Mend. | Accepted |  | WCSP | 
	
		| Masdevallia maxilimax (Luer) Luer | Accepted |  | WCSP | 
	
		| Masdevallia maxillariiformis F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia mayaycu Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia × measuresiana Rolfe [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia medellinensis Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia medinae Luer & J.Portilla | Accepted |  | WCSP | 
	
		| Masdevallia medusa Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia megaloglossa Luer & R.Escobar | Synonym |  | WCSP | 
	
		| Masdevallia meiracyllium Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia mejiana Garay | Accepted |  | WCSP | 
	
		| Masdevallia melanoglossa Luer | Accepted |  | WCSP | 
	
		| Masdevallia melanopus Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia melanoxantha Linden & Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia meleagris Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia meleagris Rchb.f. [Illegitimate] | Synonym |  | WCSP | 
	
		| Masdevallia melina Königer & J.Meza | Accepted |  | WCSP | 
	
		| Masdevallia melloi Pabst | Synonym |  | WCSP | 
	
		| Masdevallia menatoi Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia mendozae Luer | Accepted |  | WCSP | 
	
		| Masdevallia mentosa Luer | Accepted |  | WCSP | 
	
		| Masdevallia merinoi Luer & J.Portilla | Accepted |  | WCSP | 
	
		| Masdevallia metallica F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia mezae Luer | Accepted |  | WCSP | 
	
		| Masdevallia microglochin Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia microptera Luer & Würstle | Accepted |  | WCSP | 
	
		| Masdevallia microsiphon Luer | Accepted |  | WCSP | 
	
		| Masdevallia midas Luer | Accepted |  | WCSP | 
	
		| Masdevallia mijahuangae D.E. Benn. | Unresolved |  | TRO | 
	
		| Masdevallia milagroi Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia militaris Rchb.f. & Warsz. | Synonym |  | WCSP | 
	
		| Masdevallia minuta Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia misasii Braas | Accepted |  | WCSP | 
	
		| Masdevallia molossoides Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia molossus Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia monicana Luer | Accepted |  | WCSP | 
	
		| Masdevallia monogona Königer | Accepted |  | WCSP | 
	
		| Masdevallia mooreana Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia mopsus F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia mordax Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia morenoi Luer | Synonym |  | WCSP | 
	
		| Masdevallia morochoi Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia mosquerae (Kraenzl.) F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia moyobambae Königer | Synonym |  | WCSP | 
	
		| Masdevallia munae Luer & R.Barrow | Accepted |  | WCSP | 
	
		| Masdevallia × mundyana auct. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia murex Luer | Accepted |  | WCSP | 
	
		| Masdevallia muriculata Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia muscosa Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia mutica Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia myriostigma E.Morren | Synonym |  | WCSP | 
	
		| Masdevallia × mystica Luer | Accepted |  | WCSP | 
	
		| Masdevallia naevia Luer & V.N.M.Rao | Accepted |  | WCSP | 
	
		| Masdevallia naranjapatae Luer | Accepted |  | WCSP | 
	
		| Masdevallia navicularis Garay & Dunst. | Accepted |  | WCSP | 
	
		| Masdevallia nebulina Luer | Accepted |  | WCSP | 
	
		| Masdevallia neglecta Königer | Synonym |  | WCSP | 
	
		| Masdevallia newmaniana Luer & Teague | Accepted |  | WCSP | 
	
		| Masdevallia nicaraguae Luer | Accepted |  | WCSP | 
	
		| Masdevallia nidifica Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia niesseniae Luer | Accepted |  | WCSP | 
	
		| Masdevallia nigricans Königer & Sijm | Accepted |  | WCSP | 
	
		| Masdevallia nijhuisiae Luer & Sijm | Accepted |  | WCSP | 
	
		| Masdevallia nikoleana Luer & J.Portilla | Accepted |  | WCSP | 
	
		| Masdevallia nitens Luer | Accepted |  | WCSP | 
	
		| Masdevallia nivea (Luer & R.Escobar) Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia norae Luer | Accepted |  | WCSP | 
	
		| Masdevallia normannii auct. | Synonym |  | WCSP | 
	
		| Masdevallia norops Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia norrisiorum Luer & Dalström | Accepted |  | WCSP | 
	
		| Masdevallia notosibirica Maek. & T.Hashim. | Accepted |  | WCSP | 
	
		| Masdevallia nunezii Luer & Dalström | Accepted |  | WCSP | 
	
		| Masdevallia nutans F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia nycterina Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia obrieniana Rolfe | Synonym |  | WCSP | 
	
		| Masdevallia obscurans (Luer) Luer | Accepted |  | WCSP | 
	
		| Masdevallia ocanensis Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia ochracea Burb. [Invalid] | Synonym |  | WCSP | 
	
		| Masdevallia ochthodes Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia odontocera Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia odontocheila Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia odontopetala Luer | Accepted |  | WCSP | 
	
		| Masdevallia oligantha Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia olivacea Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia olmosii Königer & Sijm | Accepted |  | WCSP | 
	
		| Masdevallia omorenoi Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia ophioglossa Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia ophioglossa subsp. grossa (Luer) Luer | Accepted |  | WCSP | 
	
		| Masdevallia orchipayanensium P.Ortiz | Synonym |  | WCSP | 
	
		| Masdevallia oreas Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia ortalis Luer | Accepted |  | WCSP | 
	
		| Masdevallia ortgiesiana Rolfe | Synonym |  | WCSP | 
	
		| Masdevallia os-draconis Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia os-viperae Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia oscarii Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia oscitans (Luer) Luer | Accepted |  | WCSP | 
	
		| Masdevallia osmariniana Braga | Synonym |  | WCSP | 
	
		| Masdevallia ostaurina Luer | Accepted |  | WCSP | 
	
		| Masdevallia ova-avis Luer | Accepted |  | WCSP | 
	
		| Masdevallia oxapampaensis D.E.Benn. & Christenson | Accepted |  | WCSP | 
	
		| Masdevallia pachyantha Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia pachyantha var. hoppii (Schltr.) Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia pachygyne Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia pachysepala (Rchb.f.) Luer | Accepted |  | WCSP | 
	
		| Masdevallia pachyura Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia pachyura subsp. leptoura (Luer) Luer | Synonym |  | WCSP | 
	
		| Masdevallia paisbambae F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia paivaeana Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia pallida (Woolward) Luer | Synonym |  | WCSP | 
	
		| Masdevallia palmensis Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia panamensis (Schltr.) Ames | Synonym |  | WCSP | 
	
		| Masdevallia pandurilabia C.Schweinf. | Accepted |  | WCSP | 
	
		| Masdevallia panguiensis Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia pantex Luer | Synonym |  | WCSP | 
	
		| Masdevallia pantherina F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia pantomima Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia papillosa Luer | Accepted |  | WCSP | 
	
		| Masdevallia paquishae Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia paranaensis Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia pardina Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia × parksii auct. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia × parlatoreana Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia parsonsii Luer | Accepted |  | WCSP | 
	
		| Masdevallia parvula Schltr. | Accepted |  | WCSP | 
	
		| Masdevallia pastensis Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia pastinata Luer | Accepted |  | WCSP | 
	
		| Masdevallia patchicutzae Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia patriciana Luer | Accepted |  | WCSP | 
	
		| Masdevallia patula Luer & Malo | Accepted |  | WCSP | 
	
		| Masdevallia paulensis Barb.Rodr. | Synonym |  | WCSP | 
	
		| Masdevallia pelecaniceps Luer | Synonym |  | WCSP | 
	
		| Masdevallia peristeria Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia peristeria subsp. haematosticta (Rchb.f.) Luer | Synonym |  | WCSP | 
	
		| Masdevallia pernix Königer | Accepted |  | WCSP | 
	
		| Masdevallia perpusilla Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia persicina Luer | Accepted |  | WCSP | 
	
		| Masdevallia peruviana Rolfe | Synonym |  | WCSP | 
	
		| Masdevallia pescadoensis Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia petiolaris Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia phacopsis Luer & Dalström | Accepted |  | WCSP | 
	
		| Masdevallia phasmatodes Königer | Accepted |  | WCSP | 
	
		| Masdevallia phlogina Luer | Accepted |  | WCSP | 
	
		| Masdevallia phoebe Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia phoenix Luer | Accepted |  | WCSP | 
	
		| Masdevallia picea Luer | Accepted |  | WCSP | 
	
		| Masdevallia picta Luer | Accepted |  | WCSP | 
	
		| Masdevallia picturata Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia picturata subsp. minor (Cogn.) Luer | Synonym |  | WCSP | 
	
		| Masdevallia picturata var. minor Cogn. | Synonym |  | WCSP | 
	
		| Masdevallia pileata Luer & Würstle | Accepted |  | WCSP | 
	
		| Masdevallia pinocchio Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia planadensis Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia plantaginea (Poepp. & Endl.) Cogn. | Accepted |  | WCSP | 
	
		| Masdevallia platycrater Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia platyglossa Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia platyrachis Rolfe | Synonym |  | WCSP | 
	
		| Masdevallia pleurothalloides Luer | Accepted |  | WCSP | 
	
		| Masdevallia plynophora Luer | Accepted |  | WCSP | 
	
		| Masdevallia × polita Luer & Sijm [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia pollux Luer & Cloes | Accepted |  | WCSP | 
	
		| Masdevallia polyantha Lindl. | Synonym |  | WCSP | 
	
		| Masdevallia polychroma Luer | Accepted |  | WCSP | 
	
		| Masdevallia polyphemus Luer | Synonym |  | WCSP | 
	
		| Masdevallia polysticta Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia polysticta var. crassicaudata Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia polysticta subsp. spathulifolia (Kraenzl.) Luer | Synonym |  | WCSP | 
	
		| Masdevallia popayanensis F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia popowiana Königer & J.G.Weinm.bis | Accepted |  | WCSP | 
	
		| Masdevallia porcelliceps Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia porcelliceps var. sulphurea (F.Lehm. & Kraenzl.) Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia porphyrea Luer | Accepted |  | WCSP | 
	
		| Masdevallia portillae Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia posadae Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia × pourbaisi auct. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia pozoi Königer | Accepted |  | WCSP | 
	
		| Masdevallia princeps Luer | Accepted |  | WCSP | 
	
		| Masdevallia priscillana Luer & V.N.M.Rao | Accepted |  | WCSP | 
	
		| Masdevallia proboscoidea Luer & V.N.M.Rao | Accepted |  | WCSP | 
	
		| Masdevallia prodigiosa Königer | Accepted |  | WCSP | 
	
		| Masdevallia prolixa Luer | Accepted |  | WCSP | 
	
		| Masdevallia prosartema Königer | Accepted |  | WCSP | 
	
		| Masdevallia pseudominuta H.R.Sweet | Synonym |  | WCSP | 
	
		| Masdevallia psittacina Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia psyche Luer & Andreetta | Synonym |  | WCSP | 
	
		| Masdevallia pteroglossa Schltr. | Accepted |  | WCSP | 
	
		| Masdevallia pterygiophora Luer & R.Escobar | Synonym |  | WCSP | 
	
		| Masdevallia pulcherrima Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia pulex Rchb.f. [Spelling variant] | Synonym |  | WCSP | 
	
		| Masdevallia pulvinaris Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia pumila Poepp. & Endl. | Accepted |  | WCSP | 
	
		| Masdevallia punctata Rolfe | Synonym |  | WCSP | 
	
		| Masdevallia purpurella Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia purpurella subsp. nivea Luer & R.Escobar | Synonym |  | WCSP | 
	
		| Masdevallia purpurina Schltr. | Accepted |  | WCSP | 
	
		| Masdevallia pusilla Rolfe | Synonym |  | WCSP | 
	
		| Masdevallia pusiola Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia pygmaea Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia pyknosepala Luer & Cloes | Accepted |  | WCSP | 
	
		| Masdevallia pyxis Luer | Accepted |  | WCSP | 
	
		| Masdevallia quasimodo Luer | Accepted |  | WCSP | 
	
		| Masdevallia quilichaoensis F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia racemosa Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia radiosa Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia rafaeliana Luer | Accepted |  | WCSP | 
	
		| Masdevallia rana-aurea Luer | Accepted |  | WCSP | 
	
		| Masdevallia rauhii Senghas & Braas | Synonym |  | WCSP | 
	
		| Masdevallia × rebecca auct. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia receptrix Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia rechingeriana Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia recurvata Luer & Dalström | Accepted |  | WCSP | 
	
		| Masdevallia reflexa Misas [Illegitimate] | Synonym |  | WCSP | 
	
		| Masdevallia reflexa Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia regina Luer | Accepted |  | WCSP | 
	
		| Masdevallia reichenbachiana Endrés ex Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia reichenbachiana var. funebris (Endres ex Kraenzl.) Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia remotiflora Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia renzii Luer | Accepted |  | WCSP | 
	
		| Masdevallia repanda Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia replicata Königer | Accepted |  | WCSP | 
	
		| Masdevallia restrepioidea Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia revoluta Königer & J.Portilla | Accepted |  | WCSP | 
	
		| Masdevallia rex Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia rhinophora Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia rhodehameliana Luer | Accepted |  | WCSP | 
	
		| Masdevallia rhopalura Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia richardsoniana Luer | Accepted |  | WCSP | 
	
		| Masdevallia richteri Pabst | Synonym |  | WCSP | 
	
		| Masdevallia ricii Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia rigens Luer | Accepted |  | WCSP | 
	
		| Masdevallia rimarima-alba Luer | Accepted |  | WCSP | 
	
		| Masdevallia riograndensis hort. | Unresolved |  | TRO | 
	
		| Masdevallia robusta Luer | Accepted |  | WCSP | 
	
		| Masdevallia rodolfoi (Braas) Luer | Accepted |  | WCSP | 
	
		| Masdevallia rodolfoi subsp. ortalis (Luer) Luer | Synonym |  | WCSP | 
	
		| Masdevallia rodrigueziana Mansf. | Synonym |  | WCSP | 
	
		| Masdevallia roezlii Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia roezlii var. rubra B.S.Williams | Synonym |  | WCSP | 
	
		| Masdevallia rolandorum Luer & Sijm | Accepted |  | WCSP | 
	
		| Masdevallia rolfeana Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia rosea Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia rosea J.H. Veitch | Synonym |  | TRO | 
	
		| Masdevallia rosea Woolward | Synonym |  | TRO | 
	
		| Masdevallia rosea subsp. echinata (Luer & Andreetta) Luer | Synonym |  | WCSP | 
	
		| Masdevallia roseola Luer | Accepted |  | WCSP | 
	
		| Masdevallia rubeola Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia rubiginosa Königer | Accepted |  | WCSP | 
	
		| Masdevallia rufescens Königer | Accepted |  | WCSP | 
	
		| Masdevallia rufolutea Lindl. [Invalid] | Synonym |  | WCSP | 
	
		| Masdevallia rugulosa Königer | Accepted |  | WCSP | 
	
		| Masdevallia ruizii Luer & Dalström | Accepted |  | WCSP | 
	
		| Masdevallia × rushtonii auct. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia saltatrix Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia sanchezii Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia sanctae-fidei Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia sanctae-inesae Luer & Malo | Accepted |  | WCSP | 
	
		| Masdevallia sanctae-rosae Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia sanguinea Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia santiagoorum Königer | Synonym |  | WCSP | 
	
		| Masdevallia sarcophylla Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia saulii Königer | Accepted |  | WCSP | 
	
		| Masdevallia scabrilinguis Luer | Accepted |  | WCSP | 
	
		| Masdevallia scalpellifera Luer | Accepted |  | WCSP | 
	
		| Masdevallia scandens Rolfe | Accepted |  | WCSP | 
	
		| Masdevallia scapha Braas | Accepted |  | WCSP | 
	
		| Masdevallia sceptrum Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia schildhaueri Königer | Accepted |  | WCSP | 
	
		| Masdevallia schizantha Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia schizopetala Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia schizostigma Luer | Accepted |  | WCSP | 
	
		| Masdevallia schlimii Linden ex Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia schlimii var. polyantha (Lindl.) Woolward | Synonym |  | WCSP | 
	
		| Masdevallia schlimii var. sceptrum (Rchb.f.) Woolward | Synonym |  | WCSP | 
	
		| Masdevallia schmidt-mummii Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia schmidtchenii Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia schoonenii Luer | Accepted |  | WCSP | 
	
		| Masdevallia schroederae Boos | Accepted |  | WCSP | 
	
		| Masdevallia schroederiana H.J.Veitch | Accepted |  | WCSP | 
	
		| Masdevallia schroederiana var. fulvescens (Rolfe) Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia schudelii Luer | Accepted |  | WCSP | 
	
		| Masdevallia scitula Königer | Accepted |  | WCSP | 
	
		| Masdevallia scobina Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia scopaea Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia segrex Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia segurae Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia selenites Königer | Accepted |  | WCSP | 
	
		| Masdevallia semiteres Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia × senghasiana Luer | Accepted |  | WCSP | 
	
		| Masdevallia senilis Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia serendipita Luer & Teague | Accepted |  | WCSP | 
	
		| Masdevallia sernae Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia sertula Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia sessilis Barb.Rodr. | Synonym |  | WCSP | 
	
		| Masdevallia setacea Luer & Malo | Accepted |  | WCSP | 
	
		| Masdevallia setipes Schltr. | Accepted |  | WCSP | 
	
		| Masdevallia severa Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia shiraishii Königer & M.Arias | Accepted |  | WCSP | 
	
		| Masdevallia shuttleworthii Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia shuttleworthii var. xanthocorys Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia × shuttryana Lawr. [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia sijmiana Königer | Accepted |  | WCSP | 
	
		| Masdevallia silvanoi Luer & Dalström | Accepted |  | WCSP | 
	
		| Masdevallia simia Luer | Synonym |  | WCSP | 
	
		| Masdevallia simula Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia simula var. guatemalensis (Schltr.) Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia simula var. obrieniana (Rolfe) Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia simulatrix F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia siphonantha Luer | Accepted |  | WCSP | 
	
		| Masdevallia smallmaniana Luer | Accepted |  | WCSP | 
	
		| Masdevallia sodiroi Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia soennemarkii Luer & Dalström | Accepted |  | WCSP | 
	
		| Masdevallia solomonii Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia sororcula Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia spathulifolia Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia speciosa Luer | Accepted |  | WCSP | 
	
		| Masdevallia spectrum Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia sphenopetala Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia spilantha Königer | Accepted |  | WCSP | 
	
		| Masdevallia × splendida Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia splendida var. parlatoreana (Rchb.f.) A.H.Kent | Synonym |  | WCSP | 
	
		| Masdevallia sprucei Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia staaliana Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia × stella Rolfe [Unplaced] | Unresolved |  | WCSP | 
	
		| Masdevallia stenantha F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia stenorhynchos Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia stercorea Königer | Synonym |  | WCSP | 
	
		| Masdevallia stigii Luer & L.Jost | Accepted |  | WCSP | 
	
		| Masdevallia stirpis Luer | Accepted |  | WCSP | 
	
		| Masdevallia strattoniana Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia striatella Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia strigosa Königer | Accepted |  | WCSP | 
	
		| Masdevallia strobelii H.R.Sweet & Garay | Accepted |  | WCSP | 
	
		| Masdevallia × strumella Luer | Accepted |  | WCSP | 
	
		| Masdevallia strumifera Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia strumosa P.Ortiz & E.Calderón | Accepted |  | WCSP | 
	
		| Masdevallia stumpflei Braas | Accepted |  | WCSP | 
	
		| Masdevallia subumbellata Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia suinii Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia sulphurea F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia sulphurella Königer | Accepted |  | WCSP | 
	
		| Masdevallia sumapazensis P.Ortiz | Accepted |  | WCSP | 
	
		| Masdevallia summersii L.O.Williams | Synonym |  | WCSP | 
	
		| Masdevallia superbiens Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia superflua Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia surinamensis Focke | Synonym |  | WCSP | 
	
		| Masdevallia sururuana Campacci | Accepted |  | WCSP | 
	
		| Masdevallia susanae Pabst | Synonym |  | WCSP | 
	
		| Masdevallia swertiifolia Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia synthesis Luer | Accepted |  | WCSP | 
	
		| Masdevallia syringodes Luer & Andreetta | Synonym |  | WCSP | 
	
		| Masdevallia tarantula Luer | Synonym |  | WCSP | 
	
		| Masdevallia teaguei Luer | Accepted |  | WCSP | 
	
		| Masdevallia telloi Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia tentaculata Luer | Accepted |  | WCSP | 
	
		| Masdevallia tenuicauda Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia tenuipes Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia tenuissima C.Schweinf. | Synonym |  | WCSP | 
	
		| Masdevallia terborchii Luer | Accepted |  | WCSP | 
	
		| Masdevallia theleura Luer | Accepted |  | WCSP | 
	
		| Masdevallia thienii Dodson | Accepted |  | WCSP | 
	
		| Masdevallia tinekeae Luer & R.Vásquez | Accepted |  | WCSP | 
	
		| Masdevallia titan Luer | Accepted |  | WCSP | 
	
		| Masdevallia tokachiorum Luer | Accepted |  | WCSP | 
	
		| Masdevallia tonduzii Woolward | Accepted |  | WCSP | 
	
		| Masdevallia torta Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia torulosa Königer & J.Portilla | Synonym |  | WCSP | 
	
		| Masdevallia tovarensis Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia trautmanniana Luer & J.Portilla | Accepted |  | WCSP | 
	
		| Masdevallia trechsliniana Königer & J.Meza | Accepted |  | WCSP | 
	
		| Masdevallia triangularis Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia triaristella Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia tricallosa Königer | Accepted |  | WCSP | 
	
		| Masdevallia tricarinata (Barb.Rodr.) F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia triceratops Luer | Synonym |  | WCSP | 
	
		| Masdevallia trichaete Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia trichroma Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia tricolor Rchb.f. [Illegitimate] | Synonym |  | WCSP | 
	
		| Masdevallia tricycla Luer | Accepted |  | WCSP | 
	
		| Masdevallia tridactylites Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia tridens Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia tridentata Lindl. | Synonym |  | WCSP | 
	
		| Masdevallia trifurcata Luer | Accepted |  | WCSP | 
	
		| Masdevallia triglochin Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia trigonopetala Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia trinema Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia trinemoides Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia trionyx Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia trioon H.R.Sweet | Synonym |  | WCSP | 
	
		| Masdevallia tripeta Rchb. f. | Synonym |  | TRO | 
	
		| Masdevallia triquetra Scheidw. | Synonym |  | WCSP | 
	
		| Masdevallia triseta Rchb.f. ex Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia trivenia Königer | Synonym |  | WCSP | 
	
		| Masdevallia trochilus Linden & André | Accepted |  | WCSP | 
	
		| Masdevallia troglodytes E.Morren | Synonym |  | WCSP | 
	
		| Masdevallia truncata Luer | Accepted |  | WCSP | 
	
		| Masdevallia tsubotae Luer | Accepted |  | WCSP | 
	
		| Masdevallia tubata Schltr. | Accepted |  | WCSP | 
	
		| Masdevallia tubeana Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia tubuliflora Ames | Accepted |  | WCSP | 
	
		| Masdevallia tubulosa Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia tubulosa subsp. syringodes (Luer & Andreetta) Luer | Synonym |  | WCSP | 
	
		| Masdevallia tuerckheimii Ames | Accepted |  | WCSP | 
	
		| Masdevallia ulei Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia uncifera Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia uniflora Ruiz & Pav. | Accepted |  | WCSP | 
	
		| Masdevallia uniflora Kunth [Illegitimate] | Synonym |  | WCSP | 
	
		| Masdevallia urceolaris Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia urosalpinx Luer | Synonym |  | WCSP | 
	
		| Masdevallia urostachya Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia ustulata Luer | Accepted |  | WCSP | 
	
		| Masdevallia utriculata Luer | Accepted |  | WCSP | 
	
		| Masdevallia valenciae Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia vampira Luer | Synonym |  | WCSP | 
	
		| Masdevallia vargasii C.Schweinf. | Accepted |  | WCSP | 
	
		| Masdevallia vasquezii Luer | Accepted |  | WCSP | 
	
		| Masdevallia veitchiana Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia velella Luer | Accepted |  | WCSP | 
	
		| Masdevallia velifera Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia velox Königer | Accepted |  | WCSP | 
	
		| Masdevallia velutina Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia venatoria Luer & Malo | Accepted |  | WCSP | 
	
		| Masdevallia venezuelana H.R.Sweet | Accepted |  | WCSP | 
	
		| Masdevallia venosa Rolfe | Synonym |  | WCSP | 
	
		| Masdevallia ventricosa Schltr. | Accepted |  | WCSP | 
	
		| Masdevallia ventricularia Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia ventricularia var. brevicaudata Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia ventricularia subsp. filaria (Luer & R.Escobar) Luer | Synonym |  | WCSP | 
	
		| Masdevallia ventricularia var. longicaudata F.Lehm. | Synonym |  | WCSP | 
	
		| Masdevallia venus Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia venusta Schltr. | Accepted |  | WCSP | 
	
		| Masdevallia verecunda Luer | Accepted |  | WCSP | 
	
		| Masdevallia verrucosa Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia vespertilio Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia vexillifera Luer | Accepted |  | WCSP | 
	
		| Masdevallia vidua Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia vieirana Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia vilcabambensis L.Valenz. & E.Suclli | Accepted |  | WCSP | 
	
		| Masdevallia villegasii Königer | Accepted |  | WCSP | 
	
		| Masdevallia virens Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia virgo-cuencae Luer & Andreetta | Accepted |  | WCSP | 
	
		| Masdevallia virgo-rosea Buitr.-Delg., N.Peláez & Gary Mey. | Unresolved |  | WCSP (in review) | 
	
		| Masdevallia vittata Luer | Synonym |  | WCSP | 
	
		| Masdevallia vittatula Luer & R.Escobar | Synonym |  | WCSP | 
	
		| Masdevallia vomeris Luer | Accepted |  | WCSP | 
	
		| Masdevallia vulcanica F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia wageneriana Linden ex Lindl. | Accepted |  | WCSP | 
	
		| Masdevallia wageneriana var. colombiana Braas | Synonym |  | WCSP | 
	
		| Masdevallia wageneriana var. ecuadorensis Braas | Synonym |  | WCSP | 
	
		| Masdevallia wageneriana var. pteroglossa (Schltr.) Braas | Synonym |  | WCSP | 
	
		| Masdevallia wageneriana var. rodolfoi Braas | Synonym |  | WCSP | 
	
		| Masdevallia wallisii Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia wallisii var. stupenda Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia walteri Luer | Accepted |  | WCSP | 
	
		| Masdevallia weberbaueri Schltr. | Accepted |  | WCSP | 
	
		| Masdevallia welischii Luer | Accepted |  | WCSP | 
	
		| Masdevallia wendlandiana Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia whiteana Luer | Accepted |  | WCSP | 
	
		| Masdevallia winniana Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia woolwardiae F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia wubbenii Luer | Accepted |  | WCSP | 
	
		| Masdevallia wuelfinghoffiana Luer & J.Portilla | Accepted |  | WCSP | 
	
		| Masdevallia wuellneri P.Ortiz | Accepted |  | WCSP | 
	
		| Masdevallia wuerstlei Luer | Accepted |  | WCSP | 
	
		| Masdevallia wurdackii C.Schweinf. | Accepted |  | WCSP | 
	
		| Masdevallia xanthina Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia xanthina subsp. klabochorum (Rchb.f.) Luer | Synonym |  | WCSP | 
	
		| Masdevallia xanthina subsp. mandarina Luer & R.Escobar | Synonym |  | WCSP | 
	
		| Masdevallia xanthina subsp. pallida (Woolward) Luer | Synonym |  | WCSP | 
	
		| Masdevallia xanthina var. pallida Woolward | Synonym |  | WCSP | 
	
		| Masdevallia xanthodactyla Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia xanthura Schltr. | Synonym |  | WCSP | 
	
		| Masdevallia xerophila F.Lehm. & Kraenzl. | Synonym |  | WCSP | 
	
		| Masdevallia ximenae Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia xipheres Rchb.f. | Synonym |  | WCSP | 
	
		| Masdevallia xiphium Rchb.f. ex Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia xylina Rchb.f. | Accepted |  | WCSP | 
	
		| Masdevallia yauaperyensis Barb.Rodr. | Synonym |  | WCSP | 
	
		| Masdevallia yungasensis T.Hashim. | Accepted |  | WCSP | 
	
		| Masdevallia yungasensis subsp. calocodon (Luer & R.Vásquez) Luer | Accepted |  | WCSP | 
	
		| Masdevallia zahlbruckneri Kraenzl. | Accepted |  | WCSP | 
	
		| Masdevallia zamorensis Luer & J.Portilla | Accepted |  | WCSP | 
	
		| Masdevallia zapatae Luer & R.Escobar | Accepted |  | WCSP | 
	
		| Masdevallia zebracea Luer | Accepted |  | WCSP | 
	
		| Masdevallia zebrina Porsch | Synonym |  | WCSP | 
	
		| Masdevallia zongoensis Luer & Hirtz | Accepted |  | WCSP | 
	
		| Masdevallia zumbae Luer | Accepted |  | WCSP | 
	
		| Masdevallia zumbuehlerae Luer | Accepted |  | WCSP | 
	
		| Masdevallia zygia Luer & Malo | Accepted |  | WCSP |