Orchidaceae genera

Genera of the Orchidaceae

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	Genus	ranks
	Oakesara J.M.H.Shaw	Gomesa × Leochilus × Macradenia × Rodriguezia
	Oberonia Lindl.	tribe Malaxideae Epidendroideae>Malaxideae>
	Oberonioides Szlach.	tribe Malaxideae Epidendroideae>Malaxideae>
	Obrienara J.M.H.Shaw	Cattleya × Guarianthe × Laelia × Prosthechea
	Octarrhena Thwaites	subfamily Epidendroideae tribe Podochileae subtribe Thelasiinae
	Octomeria R.Br.	subfamily Epidendroideae tribe Epidendreae subtribe Pleurothallidinae
	Oddyara auct.	Cochleanthes × Kefersteinia × Pescatoria
	Oderara J.M.H.Shaw	Arachnis × Paraphalaenopsis × Renanthera × Vanda × Vandopsis
	Odisha S.Misra	subfamily Orchidoideae tribe Orchideae subtribe Orchidinae
	Odonchlopsis J.M.H.Shaw	Cochlioda × Miltoniopsis × Odontoglossum
	Odontioda auct.	Cochlioda × Odontoglossum
	Odontiopsis J.M.H.Shaw	Miltoniopsis × Odontoglossum
	Odontobrassia auct.	Brassia × Odontoglossum
	Odontocentrum J.M.H.Shaw	Odontoglossum × Trichocentrum
	Odontochilus Blume	subfamily Orchidoideae tribe Cranichideae subtribe Goodyerinae
	Odontocidium auct.	Odontoglossum × Oncidium
	Odontokoa J.M.H.Shaw	Odontoglossum × Zelenkoa
	Odontonia Rolfe	Miltonia × Odontoglossum
	Odontopilia auct.	Odontoglossum × Trichopilia
	Odontorettia auct.	Comparettia × Odontoglossum
	Odontorrhynchus M.N.Correa	subfamily Orchidoideae tribe Cranichideae subtribe Spiranthinae
	Odontostele J.M.H.Shaw	Odontoglossum × Rhynchostele
	Odontozelencidium J.M.H.Shaw	Odontoglossum × Oncidium × Zelenkoa
	Odopetalum G.Hansen	Odontoglossum × Zygopetalum
	Oeonia Lindl.	subfamily Epidendroideae tribe Vandeae subtribe Angraecinae
	Oeoniella Schltr.	subfamily Epidendroideae tribe Vandeae subtribe Angraecinae
	Oeorchis Glic.	Cyrtorchis × Oeoniella
	Oerstedkeria J.M.H.Shaw	Barkeria × Oerstedella
	Oerstelaelia J.M.H.Shaw	Laelia × Oerstedella
	Oertonia J.M.H.Shaw	Broughtonia × Oerstedella
	Oestlundia W.E.Higgins	subfamily Epidendroideae tribe Epidendreae subtribe Laeliinae
	Okaara auct.	Ascocentrum × Renanthera × Rhynchostylis × Vanda
	Oligophyton H.P.Linder	subfamily Orchidoideae tribe Orchideae subtribe Orchidinae
	Oliveriana Rchb.f.	subfamily Epidendroideae tribe Cymbidieae subtribe Oncidiinae
	Oliverosara	Cattleya × Guarianthe × Myrmecophila × Prosthechea
	Omoea Blume	subfamily Epidendroideae tribe Vandeae subtribe Aeridinae
	Oncandra auct.	Galeandra × Oncidium
	Oncidarettia auct.	Comparettia × Oncidium
	Oncidasia auct.	Aspasia × Oncidium
	Oncidenia auct.	Macradenia × Oncidium
	Oncidesa auct.	Gomesa × Oncidium
	Oncidettia Moir & Wreford	subfamily Epidendroideae tribe Cymbidieae subtribe Oncidiinae
	Oncidguezia	Oncidium × Rodriguezia
	Oncidiella auct.	Oncidium × Rodrigueziella
	Oncidioda auct.	Cochlioda × Oncidium
	Oncidium Sw.	subfamily Epidendroideae tribe Cymbidieae subtribe Oncidiinae
	Oncidodontopsis J.M.H.Shaw	Miltoniopsis × Odontoglossum × Oncidium
	Oncidoglossum J.M.H.Shaw	Oncidium × Rossioglossum
	Oncidophora auct.	Oncidium × Ornithophora
	Oncidopsiella J.M.H.Shaw	Oncidium × Psychopsiella
	Oncidopsis J.M.H.Shaw	Miltoniopsis × Oncidium
	Oncidpilia auct.	Oncidium × Trichopilia
	Oncidumnia J.M.H.Shaw	Oncidium × Tolumnia
	Oncitonioides J.M.H.Shaw	Miltonioides × Oncidium
	Oncostele J.M.H.Shaw	Oncidium × Rhynchostele
	Oncostelopsis J.M.H.Shaw	Miltoniopsis × Oncidium × Rhynchostele
	Onoara Wreford	Ascocentrum × Renanthera × Vanda × Vandopsis
	Onrodenkoa J.M.H.Shaw	Oncidium × Rodriguezia × Zelenkoa
	Ontolezia J.M.H.Shaw	Oncidium × Rodriguezia × Tolumnia
	Ontolglossum J.M.H.Shaw	Odontoglossum × Oncidium × Tolumnia
	Onzelcentrum J.M.H.Shaw	Oncidium × Trichocentrum × Zelenkoa
	Onzelettia J.M.H.Shaw	Comparettia × Oncidium × Zelenkoa
	Onzeloda J.M.H.Shaw	Cochlioda × Oncidium × Zelenkoa
	Onzelumnia J.M.H.Shaw	Oncidium × Tolumnia × Zelenkoa
	Ophioglossella Schuit. & Ormerod	subfamily Epidendroideae tribe Vandeae subtribe Aeridinae
	Ophramptis J.M.H.Shaw	Anacamptis × Ophrys
	Ophrys L.	subfamily Orchidoideae tribe Orchideae subtribe Orchidinae
	Opilionanthe Karremans & Bogarín	subfamily Epidendroideae tribe Epidendreae subtribe Pleurothallidinae
	Opoixara J.M.H.Shaw	Broughtonia × Cattleya × Laelia × Prosthechea × Rhyncholaelia × Sophronitis
	Opsisanda auct.	Vanda × Vandopsis
	Opsisanthe R.E.Schult. & Pease	Euanthe × Vandopsis
	Opsiscattleya auct.	Cattleya × Cattleyopsis
	Opsistylis auct.	Rhynchostylis × Vandopsis
	Orchidactylorhiza Soó & Borsos	subfamily Orchidoideae tribe Orchideae subtribe Orchidinae
	Orchidanacamptis Labrie	Anacamptis × Orchis
	Orchigymnadenia E.G.Camus	subfamily Orchidoideae tribe Orchideae subtribe Orchidinae
	Orchimantoglossum Asch. & Graebn.	subfamily Orchidoideae tribe Orchideae subtribe Orchidinae
	Orchinea J.M.H.Shaw	subfamily Orchidoideae tribe Orchideae subtribe Orchidinae
	Orchiophrys auct.	Ophrys × Orchis
	Orchipedum Breda	subfamily Orchidoideae tribe Cranichideae subtribe Goodyerinae
	Orchiplatanthera E.G.Camus	subfamily Orchidoideae tribe Orchideae subtribe Orchidinae
	Orchis Tourn. ex L.	subfamily Orchidoideae tribe Orchideae subtribe Orchidinae
	Orchiserapias E.G.Camus	Orchis × Serapias
	Oreorchis Lindl.	tribe Calypsoeae Epidendroideae>Calypsoeae>
	Orestias Ridl.	tribe Malaxideae Epidendroideae>Malaxideae>
	Orleanesia Barb.Rodr.	subfamily Epidendroideae tribe Epidendreae subtribe Laeliinae
	Ornithocephalus Hook.	subfamily Epidendroideae tribe Cymbidieae subtribe Oncidiinae
	Ornithocidium Leinig	subfamily Epidendroideae tribe Cymbidieae subtribe Oncidiinae
	Orthoceras R.Br.	subfamily Orchidoideae tribe Diurideae subtribe Diuridinae
	Osmentara auct.	Broughtonia × Cattleya × Laeliopsis
	Ossiculum P.J.Cribb & Laan	subfamily Epidendroideae tribe Vandeae subtribe Angraecinae
	Otaara auct.	Brassavola × Broughtonia × Cattleya × Laelia
	Otobrastonia J.M.H.Shaw	Brassia × Miltonia × Otoglossum
	Otochilus Lindl.	subfamily Epidendroideae tribe Arethuseae subtribe Coelogyninae
	Otocidium	subfamily Epidendroideae tribe Cymbidieae subtribe Oncidiinae
	Otocolax auct.	Colax × Otostylis
	Otoglochilum Liebman	Cyrtochilum × Otoglossum
	Otoglossum (Schltr.) Garay & Dunst.	subfamily Epidendroideae tribe Cymbidieae subtribe Oncidiinae
	Otohartia J.M.H.Shaw	Lockhartia × Otoglossum
	Otonisia auct.	Aganisia × Otostylis
	Otopabstia Garay	Otostylis × Pabstia
	Otorhynchocidium J.M.H.Shaw	Oncidium × Otoglossum × Rhynchostele
	Otosepalum auct.	Otostylis × Zygopetalum
	Otostele J.M.H.Shaw	Otoglossum × Rhynchostele
	Otostylis Schltr.	subfamily Epidendroideae tribe Cymbidieae subtribe Zygopetalinae
	Ottoara J.M.H.Shaw	Cattleya × Schomburgkia × Laelia × Guarianthe
	Owensara auct.	Doritis × Phalaenopsis × Renanthera
	Oxystophyllum Blume	subfamily Epidendroideae tribe Podochileae subtribe Eriinae