Home > Genera > Species > genus =
  Hybrids   Synonyms  All Types 
total 918
Genus Species Author Year Distribution
Acampe ochracea (Lindl.) Hochr. 1910 India to China (S. Yunnan) and Indo-China
Acianthera obscura (A.Rich. & Galeotti) Pridgeon & M.W.Chase 2001 Mexico (San Luis Potosí, Veracruz)
Acianthera ochreata subsp. ochreata NE. Brazil
Acianthera ochreata subsp. cylindrifolia (Borba & Semir) Borba 2003 Brazil (Minas Gerais)
Acianthera ochreata (Lindl.) Pridgeon & M.W.Chase 2001 E. Brazil
Acianthera octophrys (Rchb.f.) Pridgeon & M.W.Chase 2001 SE. Brazil
Acianthera odontotepala (Rchb.f.) Luer 2004 Greater Antilles
Acianthera ofella (Luer) Pridgeon & M.W.Chase 2001 Ecuador
Acianthera oligantha (Barb.Rodr.) F.Barros 2003 SE. & S. Brazil
Acianthera omissa (Luer) Pridgeon & M.W.Chase 2001 Venezuela (Apure, Amazonas)
Acianthera oricola Karremans, Chiron & Van den Berg 2016 W. Cuba (Cabo Corrientes)
Acianthera oscitans (Ames) Pridgeon & M.W.Chase 2001 C. America
Acianthus oxyglossus Schltr. 1906 SE. New Caledonia
Aerangis oligantha Schltr. 1915 SW. Tanzania to N. Malawi
Aeranthes orophila Toill.-Gen. 1959 N. & C. Madagascar
Aeranthes orthopoda Toill.-Gen., Ursch & Bosser 1960 C. Madagascar
Aerides odorata Lour. 1790 China (W. Yunnan, Guangdong) to Trop. Asia
Aerides orthocentra Hand.-Mazz. 1938 China (Yunnan)
Aeridostachya odontoglossa (Schltr.) Rauschert 1983
Aeridostachya ovilis (J.J.Sm.) Rauschert 1983
Agrostophyllum occidentale Schltr. 1915 Seychelles (Mahé, Silhouette), N. Madagascar
Agrostophyllum oliganthum Schltr. 1912
Alatiliparis otochilus Marg. & Szlach. 2001 Sumatera
Anathallis oblanceolata (L.O.Williams) Solano & Soto Arenas 2003 Mexico (Oaxaca)
Anathallis obovata (Lindl.) Pridgeon & M.W.Chase 2001 Trop. America
Anathallis ordinata (Luer & Dodson) Luer 2009 Ecuador (Sucumbíos)
Anathallis ourobranquensis Campacci & Menini 2006 Brazil (Minas Gerais)
Anathallis ova-trochilorum Luer & Toscano 2012 Brazil (São Paulo)
Ancistrorhynchus ovatus Summerh. 1944 WC. Trop. Africa to SW. Uganda
Andinia obesa S.V.Uribe & Karremans 2017 Colombia
Andinia octocornuta (Luer) Karremans & S.V.Uribe 2017 Ecuador
Andinia ortiziana (S.V.Uribe & Thoerle) Karremans & S.V.Uribe 2017 Colombia (Antioquia)
Angraecum obesum H.Perrier 1938 C. Madagascar
Angraecum oblongifolium Toill.-Gen. & Bosser 1961 SC. Madagascar
Angraecum obversifolium Frapp. ex Cordem. 1895 Mascarenes
Angraecum ochraceum (Ridl.) Schltr. 1915 C. & E. Madagascar
Angraecum oeonioides Bosser 2007 Madagascar
Angraecum oliveirae Stévart & Ječmenica 2017 São Tomé (Gulf of Guinea Is., West-Central Tropical Africa, Africa)
Angraecum onivense H.Perrier 1938 EC. Madagascar
Apostasia odorata Blume 1825 Arunachal Pradesh to S. China and Malesia
Appendicula oblonga Schltr. 1912 New Guinea
Appendicula ovalis (Schltr.) J.J.Sm. ex Mansf. 1934 W. Malesia
Appendicula oxysepala (Schltr.) J.J.Sm. 1909 Papuasia
Arthrochilus oreophilus D.L.Jones 1991 N. Queensland
Aspasia omissa Christenson 2004 Colombia
Aulosepalum oestlundii (Burns-Bal.) Catling 1989 Mexico (Guerrero)
Barbosella orbicularis Luer 1976 Costa Rica to S. Venezuela and Ecuador
Barkeria obovata (C.Presl) Christenson 1989 Mexico to Panama
Bletilla ochracea Schltr. 1913 C. & S. China to Vietnam
Brachionidium operosum Luer & Hirtz 1995 Ecuador (Pastaza)
Brachycorythis obcordata (Lindl. ex Wall.) Summerh. 1955 C. India, Himalaya to Myanmar
Brachycorythis ovata Lindl. 1838 Trop. & S. Africa
Brachycorythis ovata subsp. ovata S. Africa
Brachycorythis ovata subsp. schweinfurthii (Rchb.f.) Summerh. 1955 W. Trop. Africa to Ethiopia and Tanzania
Brachycorythis ovata subsp. welwitschii (Rchb.f.) Summerh. 1955 Zaïre to Trop. S. Africa
Brachystele oxyanthos Szlach. 1996 Suriname
Brassia ocanensis Lindl. 1854 W. South America to Venezuela
Broughtonia ortgiesiana (Rchb.f.) Dressler 1966 Cuba
Bulbophyllum oblanceolatum King & Pantl. 1897 Pen. Malaysia
Bulbophyllum obliquum Schltr. 1911 Sulawesi
Bulbophyllum oblongum (Lindl.) Rchb.f. 1861 India (West Bengal) to Indo-China
Bulbophyllum obovatifolium J.J.Sm. 1912 New Guinea
Bulbophyllum obovatum (J.J.Sm.) J.J.Verm., Schuit. & de Vogel 2014 New Guinea
Bulbophyllum obrienianum Rolfe 1892
Bulbophyllum obscuriflorum H.Perrier 1937 N. Madagascar
Bulbophyllum obtusatum Schltr. 1924 N. & NW. Madagascar
Bulbophyllum obtusipetalum J.J.Sm. 1905 W. Malesia
Bulbophyllum obtusum (Blume) Lindl. 1830 W. Malesia
Bulbophyllum obyrnei Garay, Hamer & Siegerist 1995 New Guinea
Bulbophyllum occlusum Ridl. 1885 Réunion, Madagascar
Bulbophyllum occultum Thouars 1822 Mascarenes, Madagascar
Bulbophyllum ocellatum Cootes & M.A.Clem. 2011 Philippines
Bulbophyllum ochroleucum Schltr. 1905 New Guinea
Bulbophyllum ochroxanthum J.J.Verm. & A.L.Lamb 2013 Borneo (Brunei)
Bulbophyllum ochthochilum J.J.Verm. 1993 E. New Guinea
Bulbophyllum ochthodes J.J.Verm. 2002 Pen. Malaysia
Bulbophyllum octarrhenipetalum J.J.Sm. 1913 New Guinea, Vanuatu
Bulbophyllum octorhopalon Seidenf. 1975 Pen. Malaysia
Bulbophyllum oculatum Teijsm. & Binn. 1862
Bulbophyllum odoardii Rchb.f. & Pfitzer 1884 Borneo (Sarawak)
Bulbophyllum odontoglossum Schltr. 1913 New Guinea
Bulbophyllum odontopetalum Schltr. 1913 New Guinea
Bulbophyllum odontostigma J.J.Verm. 2008 W. New Guinea
Bulbophyllum odoratissimum (Sm.) Lindl. ex Wall. 1829 Nepal to S. China
Bulbophyllum odoratissimum var. odoratissimum Nepal to S. China
Bulbophyllum odoratissimum var. racemosum N.P.Balakr. 1978 E. Himalaya to Tibet
Bulbophyllum odoratum (Blume) Lindl. 1830 Malesia
Bulbophyllum oeneum Burkill ex Ridl. 1924 Pen. Malaysia, Borneo (Sabah, Sarawak), Jawa
Bulbophyllum oerstedii (Rchb.f.) Hemsl. 1884 Florida, S. Mexico to N. South America and Ecuador
Bulbophyllum oliganthum Schltr. 1913 New Guinea
Bulbophyllum oligochaete Schltr. 1913 New Guinea
Bulbophyllum oligoglossum Rchb.f. 1865 Myanmar
Bulbophyllum olivinum J.J.Sm. 1934 New Guinea
Bulbophyllum olivinum subsp. linguiferum J.J.Verm. 1993 E. New Guinea
Bulbophyllum olivinum subsp. olivinum New Guinea
Bulbophyllum olorinum J.J.Sm. 1912 New Guinea
Bulbophyllum omerandrum Hayata 1914 S. China, C. & S. Taiwan
Bulbophyllum oncopus J.J.Verm. & P.O'Byrne 2008 Sulawesi
Bulbophyllum onivense H.Perrier 1937 C. Madagascar
Bulbophyllum oobulbum Schltr. 1913 New Guinea
Bulbophyllum ophiuchus var. baronianum H.Perrier ex Hermans 2007 ENE. Madagascar
Bulbophyllum ophiuchus var. ophiuchus E. Madagascar
Bulbophyllum ophiuchus Ridl. 1886 E. Madagascar
Bulbophyllum orbiculare J.J.Sm. 1912 Maluku to Solomon Is.
Bulbophyllum orbiculare subsp. cassideum (J.J.Sm.) J.J.Verm. 1993 Maluku to New Guinea
Bulbophyllum orbiculare subsp. orbiculare New Guinea to Solomon Is.
Bulbophyllum orectopetalum Garay, Hamer & Siegerist 1992 Assam to Indo-China, Borneo
Bulbophyllum oreocharis Schltr. 1913 New Guinea
Bulbophyllum oreodorum Schltr. 1924 N. & SC. Madagascar
Bulbophyllum oreodoxa Schltr. 1913 New Guinea
Bulbophyllum oreogenum Schltr. 1913 New Guinea
Bulbophyllum oreogigas J.J.Verm., P.O'Byrne & A.L.Lamb 2015 Borneo (Sabah)
Bulbophyllum oreomene J.J.Verm., Schuit. & de Vogel 2014 New Guinea
Bulbophyllum oreonastes Rchb.f. 1881 Trop. Africa
Bulbophyllum orezii C.S.Kumar 2004 India (Kerala)
Bulbophyllum orientale Seidenf. 1979 China (S. Yunnan) to Indo-China
Bulbophyllum origami J.J.Verm. 1993 New Guinea
Bulbophyllum ornatissimum (Rchb.f.) J.J.Sm. 1912 E. Himalaya to India (Bihar, Orissa)
Bulbophyllum ornatum Schltr. 1913 New Guinea
Bulbophyllum orohense J.J.Sm. 1915 New Guinea
Bulbophyllum orsidice Ridl. 1916 New Guinea
Bulbophyllum ortalis J.J.Verm. 1993 E. New Guinea
Bulbophyllum orthosepalum J.J.Verm. 1993 Papua New Guinea
Bulbophyllum osyricera Schltr. 1911 Sumatera to Jawa
Bulbophyllum osyriceroides J.J.Sm. 1920 Sumatera, Borneo (Sabah)
Bulbophyllum othonis (Kuntze) J.J.Sm. 1912 Philippines
Bulbophyllum otochilum J.J.Verm. 1991 Borneo
Bulbophyllum ovalifolium (Blume) Lindl. 1830 China (S. Yunnan) to W. & C. Malesia
Bulbophyllum ovatolanceatum J.J.Sm. 1928 Sumatera
Bulbophyllum ovatum Seidenf. 1979 Thailand
Bulbophyllum oxyanthum Schltr. 1905 Papua New Guinea
Bulbophyllum oxycalyx Schltr. 1924 N. Madagascar
Bulbophyllum oxycalyx var. oxycalyx N. & C. Madagascar
Bulbophyllum oxycalyx var. rubescens (Schltr.) Bosser 1965 N. Madagascar
Bulbophyllum oxychilum Schltr. 1905 W. & WC. Trop. Africa to Uganda
Caladenia occidentalis Hopper & A.P.Br. 2001 SW. Australia
Caladenia oenochila G.W.Carr 1991 Victoria
Caladenia oreophila (D.L.Jones) G.N.Backh. 2007 New South Wales to Victoria
Caladenia orestes (D.L.Jones) G.N.Backh. 2010 New South Wales
Caladenia orientalis (G.W.Carr) Hopper & A.P.Br. 2004 Victoria
Caladenia ornata (Nicholls) D.L.Jones 2000 Victoria
Caladenia osmera (D.L.Jones) G.N.Backh. 2007 New South Wales to Victoria
Caladenia ovata R.S.Rogers 1909 SE. South Australia
Calanthe obreniformis J.J.Sm. 1933 Sulawesi
Calanthe odora Griff. 1851 E. Himalaya to China (Yunnan, Guizhou, Guangxi) and Indo-China
Calanthe okinawensis Hayata 1911 Nensei-shoto (Okinawa, Tanega-shima)
Calanthe oreadum Rendle 1921 New Caledonia
Calanthe otuhanica C.L.Chan & T.J.Barkman 1997 Borneo (G. Kinabalu, G. Tambuyukon)
Calanthe ovalifolia Ridl. 1894 Borneo (G. Kinabalu)
Calanthe ovata Ridl. 1909 Pen. Malaysia (Pahang)
Calopogon oklahomensis D.H.Goldman 1995 C. & SE. U.S.A.
Campylocentrum organense (Rchb.f.) Rolfe 1903 Brazil (Rio de Janeiro, Paraná)
Campylocentrum ornithorrhynchum (Lindl.) Rolfe 1903 SE. & S. Brazil
Catasetum ochraceum Lindl. 1844 Colombia to N. Brazil
Catasetum ollare Linden 1881 N. Brazil
Catasetum oriximinaense Campacci & J.B.F.Silva 2010 Brazil (Pará)
Catasetum ornithoides Pabst 1955 N. Brazil
Catasetum osakadianum M.F.F.Silva & A.T.Oliveira 2002 Brazil (Rondônia)
Catasetum osculatum Lacerda & V.P.Castro 1995 Brazil (Rondônia, Mato Grosso, Mato Grosso do Sul)
Caucaea olivacea (Kunth) N.H.Williams & M.W.Chase 2001 Colombia to Ecuador
Centrostigma occultans (Welw. ex Rchb.f.) Schltr. 1915 Tanzania to Angola and Northern Prov.
Cephalantheropsis obcordata (Lindl.) Ormerod 1998 Assam to Japan and Malesia
Ceratostylis obscureviolacea Gilli 1983 Papua New Guinea
Ceratostylis octomerioides J.J.Wood & A.L.Lamb 2010 Borneo (Sabah)
Ceratostylis oreophila Schltr. 1912 New Guinea
Ceratostylis ovatilabris J.J.Sm. 1929 New Guinea
Cheirostylis octodactyla Ames 1907 N. Indo-China, Taiwan, Philippines (Luzon, Mindoro)
Cheirostylis orobanchoides (F.Muell.) D.L.Jones & M.A.Clem. 1998 Vanuatu, New Caledonia
Cheirostylis ovata (F.M.Bailey) Schltr. 1911 NE. & E. Queensland to NE. New South Wales
Chrysoglossum ornatum Blume 1825 Nepal to SW. Pacific
Cirrhaea obtusata Lindl. 1837 SE. & S. Brazil
Cirrhaea olivacea Hoffmanns. 1844
Cleisostoma odoratum Garay 1972 Pen. Malaysia
Cleisostoma odoratum subsp. sabahense P.O'Byrne & Gokusing 2016 Borneo (Sabah)
Cleistesiopsis oricamporum P.M.Br. 2009 Florida
Coelogyne obtusifolia Carr 1935 Borneo (Sabah)
Coelogyne occultata Hook.f. 1890 Sikkim to China (W. Yunnan)
Coelogyne odoardoi Schltr. 1921 N. & NW. Borneo
Coelogyne odoratissima Lindl. 1830 S. India, Sri Lanka
Coelogyne ovalis Lindl. 1838 Himalaya to China (W. Yunnan) and Indo-China
Collabium ovalifolium (Ames & C.Schweinf.) J.J.Wood 2011 Borneo (G. Kinabalu)
Comparettia oliverosii (Königer) M.W.Chase & N.H.Williams 2010 Peru
Comparettia ottonis (Klotzsch) M.W.Chase & N.H.Williams 2008 Colombia to NW. & N. Venezuela
Corallorhiza odontorhiza (Willd.) Nutt. 1818 SE. Canada, NC. & E. U.S.A. to C. America
Corallorhiza odontorhiza var. odontorhiza SE. Canada, NC. & E. U.S.A.
Corallorhiza odontorhiza var. pringlei (Greenm.) Freudenst. 1997 SE. Canada, NC. & E. U.S.A. to C. America
Corallorhiza odontorhiza f. radia Freudenst. 1997 S. Mexico to El Salvador
Coryanthes obscura G.Gerlach 1993
Coryanthes oscarii Archila 2007 Guatemala
Coryanthes oscarrodrigoi Archila 2009 Guatemala
Corybas oblongus (Hook.f.) Rchb.f. 1871 New Zealand, Chatham Is., Antipodean Is.
Corybas obscurus Lehnebach 2016 New Zealand South I.
Corybas orbiculatus (Colenso) L.B.Moore 1970 New Zealand
Corycium orobanchoides (L.f.) Sw. 1800 SW. Cape Prov.
Cranichis ovata Wickstr. 1828 Caribbean
Crepidium obovatum (J.J.Sm.) Szlach. 1995 W. Jawa
Crepidium ochyranum Szlach. & Marg. 1998 Papua New Guinea (Fergusson Is.)
Crepidium octodentatum (Seidenf.) Szlach. 1995 Indo-China
Crepidium oculatum (Rchb.f.) Szlach. 1995 N. Sumatera, W. Jawa
Crepidium oliganthum (Schltr.) Szlach. 1995 New Guinea
Crepidium olivaceum (Schltr.) Szlach. 1995 New Guinea
Crepidium orbicans J.M.H.Shaw 2014 Solomon Is.
Crepidium orbiculare (W.W.Sm. & Jeffrey) Seidenf. 1997 China (SW. & S. Yunnan) to Indo-China
Crepidium oreocharis (Schltr.) Szlach. 1995 New Guinea
Crepidium ovalisepalum (J.J.Sm.) Szlach. 1995 China (S. Yunnan), Thailand, W. Sumatera
Crossoglossa oliveirae Ormerod 2014 Panama
Crossoglossa ospinae Dodson & Ormerod 2013 Colombia (Putumayo)
Cryptostylis ovata R.Br. 1810 SW. Australia
Cyclopogon odileanus (Szlach.) J.M.H.Shaw 2014 S. Brazil to Argentina (Corrientes)
Cyclopogon oliganthus (Hoehne) Hoehne & Schltr. 1926 SE. Brazil to N. Argentina
Cyclopogon olivaceus (Rolfe) Schltr. 1920 N. & W. South America
Cyclopogon organensis (Pabst) Szlach. & Rutk. 2008 Brazil (Rio de Janeiro: Serra dos Órgãos)
Cyclopogon ovalifolius C.Presl 1827 Costa Rica to Peru
Cylindrolobus oliviacamposiae Naive, Mabanta & Cootes 2017 Philippines (Malesia, Asia-Tropical)
Cymbidium omeiense Y.S.Wu & S.C.Chen 1966 China (Sichuan: Emei Shan)
Cynorkis ochroglossa Schltr. 1924 SC. Madagascar
Cynorkis ochyrae Szlach. & Olszewski 1998 E. Zaïre
Cynorkis orchioides Schltr. 1913 W. & NC. Madagascar
Cyrtochiloides ochmatochila (Rchb.f.) N.H.Williams & M.W.Chase 2001 SE. Mexico to Peru
Cyrtochilum orgyale (Rchb.f. & Warsz.) Kraenzl. 1917 Colombia to NW. Venezuela
Cyrtochilum ornatum (Königer) Dalström 2001 Peru
Cyrtochilum orozcoi Szlach. & Kolan. 2015 Colombia
Cyrtochilum ortizianum Szlach. & Kolan. 2015 Colombia
Cyrtochilum ospinae Szlach. & Kolan. 2014 Colombia
Cyrtostylis oblonga Hook.f. 1853 New Zealand
Cystorchis ogurae (Tuyama) Ormerod & P.J.Cribb 2000 Caroline Is. (Babeldaob)
Cystorchis orphnophilla Schltr. 1911 New Guinea
Dactylorhiza osmanica (Klinge) Soó 1960 Turkey to Syria
Dactylorhiza osmanica var. anatolica (E.Nelson) Renz & Taubenheim 1983 Turkey
Dactylorhiza osmanica var. osmanica Turkey to Syria
Deiregyne obtecta (C.Schweinf.) Garay 1982 Guatemala
Dendrobium obchantiae Promm., Suddee & Kidyoo 2018 Thailand (Indo-China, Asia-Tropical)
Dendrobium obcordatum J.J.Sm. 1928 Maluku (Seram)
Dendrobium obliquum Schltr. 1912 New Guinea
Dendrobium oblongimentum Hosok. & Fukuy. 1942 Marianas
Dendrobium obovatum Schltr. 1912 New Guinea
Dendrobium obreniforme Schuit. & Peter B.Adams 2011 Papua New Guinea
Dendrobium obrienianum Kraenzl. 1892 Philippines (C. Luzon)
Dendrobium obscureauriculatum Gilli 1983 Papua New Guinea
Dendrobium obtusum Schltr. 1905 New Guinea to Solomon Is. (Bougainville)
Dendrobium obyrnei (W.K.Harris) Schuit. & de Vogel 2009 Papua New Guinea
Dendrobium ochraceum De Wild. 1906 N. Vietnam
Dendrobium ochranthum Schltr. 1905 Bismarck Arch.
Dendrobium ochreatum Lindl. 1835 E. Nepal to Indo-China
Dendrobium ochroleucum Teijsm. & Binn. 1854 Jawa
Dendrobium ochthochilum P.O'Byrne & J.J.Verm. 2003 Sumatera
Dendrobium odoardi Kraenzl. 1910 W. New Guinea
Dendrobium odontopus Schltr. 1912 New Guinea
Dendrobium odoratum Schltr. 1910 Sulawesi
Dendrobium officinale Kimura & Migo 1936 S. China, S. Japan to EC. Taiwan
Dendrobium okabeanum Tuyama 1941 Caroline Is. (Chuuk)
Dendrobium okinawense Hatus. & Ida 1970 Nansei-shoto (Okinawa), Taiwan (Taidong)
Dendrobium oliganthum Schltr. 1925 Sulawesi
Dendrobium oligophyllum Gagnep. 1950 Indo-China
Dendrobium olivaceum J.J.Sm. 1912 Borneo
Dendrobium omissum Schuit. & Peter B.Adams 2011 Philippines
Dendrobium opacifolium J.J.Sm. 1916 New Guinea
Dendrobium opilionites Schltr. 1923 New Guinea
Dendrobium oppositifolium (Kraenzl.) N.Hallé 1977 New Caledonia
Dendrobium optimuspatruus P.O'Byrne & J.J.Verm. 2003 Malesia (?)
Dendrobium orbilobulatum Fessel & Lückel 1996 Philippines
Dendrobium ordinatum J.J.Sm. 1913 New Guinea
Dendrobium oreodoxa Schltr. 1912 New Guinea
Dendrobium orientale J.J.Sm. 1905 Maluku (Ambon)
Dendrobium ornithoflorum Ames 1908 Philippines
Dendrobium osmophytopsis Kraenzl. 1910 Borneo (Sarawak: G. Matang)
Dendrobium ostrinum J.J.Sm. 1910 New Guinea
Dendrobium ostrinum var. ochroleucum J.J.Sm. 1913 New Guinea
Dendrobium ostrinum var. ostrinum New Guinea
Dendrobium otaguroanum A.D.Hawkes 1957 New Guinea
Dendrobium ou-hinnae Schltr. 1906 Vanuatu to NW. New Caledonia
Dendrobium ovatifolium Ridl. 1896 Borneo (Sarawak)
Dendrobium ovatipetalum J.J.Sm. 1932 Maluku (Halmahera)
Dendrobium ovatum (L.) Kraenzl. 1910 SW. India
Dendrobium ovipostoriferum J.J.Sm. 1912 Borneo (Kalimantan)
Dendrobium oxychilum Schltr. 1912 New Guinea
Dendrochilum ocellatum (Ames) Pfitzer 1907 Philippines (Luzon: Mt. Data)
Dendrochilum ochrolabium J.J.Wood 1994 Borneo (Sabah, Sarawak)
Dendrochilum odoratum (Ridl.) J.J.Sm. 1904 Pen. Malaysia to Sumatera
Dendrochilum oliganthum (Ames) Pfitzer 1907 Philippines (Luzon: Mt. Data, Mt. Sinapsapan)
Dendrochilum ophiopogonoides J.J.Sm. 1922 Sumatera
Dendrochilum ophiopogonoides var. kerintjiense J.J.Sm. 1932 Sumatera
Dendrochilum ophiopogonoides var. merapiense J.J.Sm. 1922 Sumatera
Dendrochilum ophiopogonoides var. ophiopogonoides Sumatera
Dendrochilum oreophilum (Ames) L.O.Williams 1952 Philippines (Luzon)
Dendrochilum ovatum J.J.Sm. 1922 Sumatera
Dendrochilum oxyglossum Schltr. 1911 Jawa
Dendrochilum oxylobum Schltr. 1911 Borneo
Dendrolirium ornatum Blume 1825
Diaphananthe odoratissima (Rchb.f.) P.J.Cribb & Carlsward 2012 Trop. Africa
Dichaea obovatipetala Folsom 1994 Panama
Dichaea ochracea Lindl. 1839 Guyana
Dichaea oxyglossa Schltr. 1923 Costa Rica to Panama
Didymoplexiella ornata (Ridl.) Garay 1954 S. Indo-China to W. Malesia
Didymoplexis obreniformis var. maliauensis Suetsugu, Suleiman & Tsukaya 2017 Borneo (Sabah)
Didymoplexis obreniformis J.J.Sm. 1914 Jawa
Dienia ophrydis (J.Koenig) Seidenf. 1997 Trop. & Subtrop. Asia to SW. Pacific
Dilomilis oligophylla (Schltr.) Summerh. 1961 E. Cuba
Disa obliqua subsp. obliqua SW. Cape Prov.
Disa obliqua subsp. clavigera (Lindl.) Bytebier 2008 SW. Cape Prov.
Disa obliqua (Lindl.) Bolus 1888 SW. Cape Prov.
Disa obtusa Lindl. 1838 SW. & S. Cape Prov.
Disa obtusa subsp. hottentotica H.P.Linder 1981 SW. Cape Prov.
Disa obtusa subsp. obtusa SW. Cape Prov.
Disa obtusa subsp. picta (Sond.) H.P.Linder 1981 S. Cape Prov.
Disa ocellata Bolus 1884 SW. Cape Prov.
Disa ochrostachya Rchb.f. 1865 Cameroon to Tanzania and S. Trop. Africa
Disa oligantha Rchb.f. 1865 SW. Cape Prov.
Disa ophrydea (Lindl.) Bolus 1888 SW. & S. Cape Prov.
Disa oreophila Bolus 1889 S. Africa
Disa oreophila subsp. erecta H.P.Linder 1981 S. Africa (Drakensberg)
Disa oreophila subsp. oreophila S. Africa
Disa ornithantha Schltr. 1915 SW. Tanzania to S. Trop. Africa
Disa ovalifolia Sond. 1846 WSW. Cape Prov.
Disperis oppositifolia var. mascarenensis Bosser 2002 Mascarenes
Disperis oppositifolia Sm. 1808 W. Indian Ocean
Disperis oppositifolia var. oppositifolia W. Indian Ocean
Disperis oxyglossa Bolus 1885 S. Cape Prov. to KwaZulu-Natal
Diuris ochroma D.L.Jones 1994 Victoria
Diuris oporina D.L.Jones 1991 Queensland
Diuris oraria D.L.Jones & C.J.French 2016 Western Australia
Diuris orientis D.L.Jones 1998 SE. Australia
Diuris ostrina D.L.Jones & C.J.French 2016 Western Australia
Dracula octavioi Luer & R.Escobar 1979 SW. Colombia
Dracula olmosii Luer & Maduro 1999 Panama
Dracula ophioceps Luer & R.Escobar 1978 SW. Colombia
Dracula orientalis Luer & R.Escobar 1982 NE. Colombia
Dracula ortiziana Luer & R.Escobar 1993 Colombia (Valle del Cauca)
Dryadella odontostele Luer 1996 Costa Rica to NW. Colombia
Dryadella osmariniana (Braga) Garay & Dunst. 1979 Brazil (Amazonas)
Elleanthus oliganthus (Poepp. & Endl.) Rchb.f. 1863 W. South America
Elleanthus orozcoae (Szlach. & Kolan.) J.M.H.Shaw 2016 Colombia
Elleanthus ortizianus Kolan. , Baranow & Rykacz 2017 Colombia (Western South America, Southern America)
Elleanthus ortizianus Kolan., Baranow & Rykacz. 2017 Colombia
Eltroplectris ortiziana (Szlach., Lamczyk & Baranow) J.M.H.Shaw 2016 Colombia
Encyclia obtusa (A.DC.) Schltr. 1918 Mexico
Encyclia ochrantha (A.Rich.) Withner 1996 Cuba
Encyclia oestlundii (Ames, F.T.Hubb. & C.Schweinf.) Hágsater & Stermitz 1983 Mexico (Guerrero)
Encyclia oliveirana Campacci 2007 Brazil (Minas Gerais)
Encyclia oncidioides (Lindl.) Schltr. 1914 Trinidad to S. Trop. America
Encyclia osmantha (Barb.Rodr.) Schltr. 1914 Venezuela to Brazil
Encyclia ossenbachiana Pupulin 2006 Costa Rica
Encyclia oxypetala (Lindl.) Schltr. 1918 Cuba
Encyclia oxyphylla Schltr. 1925 N. Brazil
Epiblastus ornithidioides Schltr. 1905 New Guinea to Bismarck Arch.
Epidendrum oaxacanum Rolfe 1904 Mexico (Oaxaca)
Epidendrum obergii A.D.Hawkes 1957 SE. & S. Brazil
Epidendrum obliquifolium Ames, F.T.Hubb. & C.Schweinf. 1935 Costa Rica
Epidendrum obliquum Schltr. 1912 Bolivia
Epidendrum oblongialpicola Hágsater & Dodson 2001 Ecuador
Epidendrum obovatipetalum Hágsater & Dodson 1993 Colombia to Ecuador
Epidendrum obtusifolium Willd. 1805 81
Epidendrum occidentale (Christenson) Hágsater & E.Santiago 2010 S. Ecuador
Epidendrum ochoae Collantes & Hágsater 2015 Peru
Epidendrum ochricolor A.D.Hawkes 1957 Ecuador
Epidendrum ocotalense Hágsater & L.Sánchez 2008 Nicaragua
Epidendrum octomerioides Schltr. 1907 C. America
Epidendrum odontantherum Hágsater & Dodson 2004 Ecuador
Epidendrum odontochilum Hágsater 1988 Costa Rica to Panama
Epidendrum odontopetalum Hágsater 2008 Bolivia
Epidendrum odontospathum Rchb.f. 1878 Peru to Bolivia
Epidendrum odontostachyum Hágsater & E.Santiago 2015 Ecuador to Peru
Epidendrum oellgaardii Hágsater & Dodson 1993 Ecuador
Epidendrum oenochrochilum Hágsater, Ric.Fernández & E.Santiago 2013 Peru
Epidendrum oenochromum Hágsater & Dodson 2004 Ecuador
Epidendrum oerstedii Rchb.f. 1852 C. America
Epidendrum oldemanii Christenson 1994 French Guiana
Epidendrum oliganthum Schltr. 1921 S. Trop. America
Epidendrum oligophyllum F.Lehm. & Kraenzl. 1899 Colombia to Peru
Epidendrum ophidion Dodson & R.Vásquez 1989 Bolivia
Epidendrum ophiochilum Hágsater & Dodson 2004 Ecuador
Epidendrum opiranthizon Hágsater & Dodson 1993 Ecuador
Epidendrum oraion Hágsater 1993 Colombia (Antioquia, Valle del Cauca)
Epidendrum orbiculatum C.Schweinf. 1943 Ecuador to Peru
Epidendrum orchidiflorum Salzm. ex Lindl. 1831 S. Trop. America
Epidendrum oreogena Schltr. 1924 Colombia
Epidendrum oreonastes Rchb.f. 1878 Bolivia
Epidendrum orgyale Lindl. 1845 Colombia
Epidendrum orientale Hágsater & M.A.Díaz 1993 Greater Antilles
Epidendrum oripicoranense Hágsater & E.Santiago 2010 Peru
Epidendrum ornithoglossum Schltr. 1917 Ecuador
Epidendrum orthocaule Schltr. 1921 Ecuador
Epidendrum orthoclinium Hágsater & Dodson 2001 Ecuador
Epidendrum orthodontum Hágsater & L.Sánchez 1999 Costa Rica to Panama
Epidendrum orthophyllum Hágsater & Dodson 1993 Ecuador
Epidendrum orthopterum Hágsater & E.Santiago 2004 Colombia
Epidendrum ortizii Hágsater & E.Santiago 2013 Colombia
Epidendrum oscar-perezii Hágsater, E.Parra & E.Santiago 2013 Colombia
Epidendrum otuzcense Hágsater & E.Santiago 2009 Peru
Epidendrum ovalifolium Lindl. 1831 79
Epidendrum oxapampense Hágsater 1999 Ecuador to Peru
Epidendrum oxybatesii Hágsater & Dodson 2004 Ecuador
Epidendrum oxycalyx Hágsater & Dodson 1993 W. South America
Epidendrum oxyglossum Schltr. 1923 Costa Rica to Panama
Epidendrum oxynanodes Hágsater 1999 Colombia (Antioquia)
Epidendrum oxysepalum Hágsater & E.Santiago 2004 NW. Venezuela
Epipactis ohwii Fukuy. 1934 C. Taiwan
Epipactis olympica Robatsch 1990 NC. Greece
Eria oblonga (Trimen) Bajrach. & K.K.Shrestha 2009 Sri Lanka
Eria obscura Aver. 1988 Vietnam
Eria occidentalis Seidenf. 1982 Uttarakhand
Eria ochracea Rolfe 1909 Thailand
Eria odorifera Leav. 1909 Philippines
Eria opeatoloba Schltr. 1910 Sulawesi
Eria oreogena Schltr. 1911 Sulawesi
Erythrodes oxyglossa Schltr. 1906 SW. Pacific
Eulophia obscura P.J.Cribb 1977 Burundi to S. Trop. Africa
Eulophia obstipa P.J.Cribb & la Croix 1998 Tanzania to Angola
Eulophia obtusa (Lindl.) Hook.f. 1890 N. India to Assam
Eulophia ochreata Lindl. 1858 India to Assam
Eulophia odontoglossa Rchb.f. 1846 Trop. & S. Africa
Eulophia orthoplectra (Rchb.f.) Summerh. 1939 Trop. Africa
Eulophia ovalis Lindl. 1837 Kenya to S. Africa
Eulophia ovalis var. bainesii (Rolfe) P.J.Cribb & la Croix 1998 Kenya to S. Africa
Eulophia ovalis var. ovalis Zimbabwe to S. Africa
Eurycentrum obscurum (Blume) Schltr. 1905 New Guinea
Eurystyles ochyrana (Szlach., Mytnik & Rutk.) F.Barros & L.R.S.Guim. 2010 Brazil (São Paulo)
Fernandezia ortiziana Kolan. & Szlach. 2013 Colombia
Galeottiella orchioides (Lindl.) R.González ex Rutk., Mytnik & Szlach. 2004 SW. Mexico
Gastrochilus obliquus (Lindl.) Kuntze 1891 C. Himalaya to SC. China and Indo-China
Gastrochilus obliquus var. obliquus C. Himalaya to China (SW. Sichuan, S. Yunnan) and Indo-China
Gastrochilus obliquus var. suavis (Seidenf.) Z.H.Tsi 1996 Thailand
Gastrodia okinawensis Suetsugu 2017 Japan (Eastern Asia, Asia-Temperate)
Gastrodia okinawensis Suetsugu 2017 Nansei-shoto (Okinawa)
Gastrophaius owenianus (Sander) J.M.H.Shaw 2012
Gavilea odoratissima Poepp. 1833 C. & S. Chile to SW. Argentina (and Buenos Aires)
Genoplesium oliganthum D.L.Jones 2001 New South Wales
Genoplesium ostrinum D.L.Jones 2001 New South Wales
Glomera obovata (Schltr.) J.J.Sm. 1912 New Guinea
Glomera obtusa Schltr. 1912 New Guinea
Glomera oligantha Schltr. 1919 New Guinea
Gomesa oscarrodrigoi Archila , Szlach. & Chiron 2016 Guatemala (Central America, Southern America)
Gomesa ottonis (Schltr.) J.M.H.Shaw & M.Giannak. 2017 S. Brazil
Gomesa ouricanensis (V.P.Castro & Campacci) M.W.Chase & N.H.Williams 2009 Brazil (Bahia)
Gongora odoratissima Lem. 1847 E. Colombia to N. Venezuela
Gongora oscarrodrigoi Archila, Szlach. & Chiron 2016 Guatemala
Goodyera oblongifolia Raf. 1833 SE. Alaska to N. & WC. U.S.A., NE. Mexico
Goodyera ovatilabia Schltr. 1923 Costa Rica to W. Panama
Gymnadenia odoratissima (L.) Rich. 1817 Europe
Gymnadenia orchidis Lindl. 1835 Pakistan to C. China
Habenaria obovata Summerh. 1932 Cameroon
Habenaria obtusa Lindl. 1835 S. Trop. America to Argentina (Jujuy)
Habenaria ocadiziana J.M.Peinado-A. 2018 Jalisco (Mexico Southwest, Mexico, Northern America)
Habenaria occidentalis (Lindl.) Summerh. 1933 W. Trop. Africa to Chad
Habenaria occlusa Summerh. 1964 SW. Tanzania
Habenaria ochroleuca R.Br. 1810 N. Australia
Habenaria odorata Schltr. 1915 SW. Tanzania to Zambia
Habenaria oerstedii Rchb.f. 1855 Nicaragua
Habenaria ofeliae R.González & Cuev.-Fig. 2010 Mexico (Zacatecas)
Habenaria orchiocalcar Hoehne 1915 Brazil
Habenaria oreophila Greenm. 1903 C. & SW. Mexico
Habenaria orthocentron P.J.Cribb 1977 N. Zambia
Habenaria ortiziana R.González 1997 Mexico (México State)
Habenaria osmastonii Karthig., Maina, Sumathi, Jayanthi & Jalal 2014 Andaman Is.
Habenaria ospinae Szlach. & Kolan. 2017 Colombia
Herminium ophioglossoides Schltr. 1912 China (W. Sichuan to NW. & C. Yunnan)
Herminium oxysepalum (K.Y.Lang) X.H.Jin, Schuit., Raskoti & Lu Q.Huang 2015 China (NW. Yunnan)
Hetaeria obliqua Blume 1859 Hainan, Nicobar Is., Pen. Thailand to W. Malesia
Hetaeria oblongifolia Blume 1825 SW. India, Indo-China to W. Pacific and Nansei-shoto
Hetaeria occidentalis Summerh. 1934 W. & WC. Trop. Africa
Holcoglossum omeiense X.H.Jin & S.C.Chen 2003 China (Sichuan: Omei Shan)
Holothrix orthoceras (Harv.) Rchb.f. 1881 S. Trop. & S. Africa
Houlletia odoratissima Linden ex Lindl. & Paxton 1853 Panama to S. Trop. America
Huntleya oculata P.Ortiz & C.Uribe 2012 Colombia
Huttonaea oreophila Schltr. 1897 NE. Cape Prov. to KwaZulu-Natal
Hylophila orientalis Schltr. 1911 New Guinea
Isochilus oaxacanus Salazar & Soto Arenas 2008 Mexico (Oaxaca)
Jumellea ophioplectron (Rchb.f.) Schltr. 1915 Madagascar
Kefersteinia ocellata Garay 1969 Colombia to Ecuador
Kefersteinia orbicularis Pupulin 2000 Costa Rica
Kefersteinia oscarii P.Ortiz 1996 Colombia (Antioquia)
Kegeliella orientalis G.Gerlach 2000 Venezuela
Kreodanthus ovatilabius (Ames & Correll) Garay 1977 Mexico (Oaxaca) to Honduras
Lankesterella orthantha (Kraenzl.) Garay 1962 Costa Rica to NW. Venezuela and Peru
Lecanorchis ohwii Masam. 1933 Taiwan
Leochilus oncidioides Knowles & Westc. 1838 Mexico to Honduras
Lepanthes oaxacana Salazar, Soto Arenas & O.Suárez 1996 Mexico (Oaxaca)
Lepanthes obliquiloba Hespenh. 1973 Cuba
Lepanthes oblivia Luer 2012 Ecuador
Lepanthes obovata Luer & R.Escobar 1984 Colombia (Antioquia)
Lepanthes obtusa Fawc. & Rendle 1905 C. & E. Jamaica
Lepanthes obtusipetala (Fawc. & Rendle) Fawc. & Rendle 1910 Jamaica
Lepanthes octavioi Luer & R.Escobar 1991 Colombia (Putumayo)
Lepanthes octopus Luer & R.Escobar 1997 Colombia (Santander)
Lepanthes odobenella Luer & Hirtz 1986 NW. Ecuador
Lepanthes odobenus Damian & B.T.Larsen 2017 Peru (Western South America, Southern America)
Lepanthes odobenus Damian & B.T.Larsen 2017 Peru
Lepanthes odontocera Luer & Hirtz 1996 Ecuador (Tungurahua)
Lepanthes odontolabis Luer 1987 Panama
Lepanthes ollaris Luer & R.Escobar 1984 W. Colombia to NW. Ecuador
Lepanthes olmosii Bogarín 2009 Panama
Lepanthes omnifera Luer & Hirtz 1998 Ecuador (Carchi)
Lepanthes opetidion Luer & R.Escobar 1991 Colombia (Nariño)
Lepanthes ophelma Luer & R.Escobar 1985 W. Colombia
Lepanthes ophioglossa Luer 1983 Ecuador
Lepanthes ophiostele Luer 1986 NW. Venezuela
Lepanthes orbella Luer 1996 Costa Rica
Lepanthes orchestris Luer & R.Vásquez 1983 NE. Ecuador, Bolivia
Lepanthes ordonezii Luer & Béhar 1997 Guatemala
Lepanthes oreibates Luer & R.Escobar 1991 Colombia (Cundinamarca)
Lepanthes oreocharis Schltr. 1912 Mexico (Chiapas) to Guatemala
Lepanthes oreophila Catling & V.R.Catling 1988 Mexico (Oaxaca)
Lepanthes orion Luer & R.Escobar 1985 E. Colombia to EC. Ecuador
Lepanthes orlicii Luer 2013 Peru (Junín)
Lepanthes ornithocephala L.Jost & Luer 2005 Ecuador
Lepanthes oroscoi Archila 2006
Lepanthes ortegae Luer & Hirtz 1996 E. Ecuador
Lepanthes ortiziana O.Pérez, E.Parra & Kolan. 2011 Colombia (Valle del Cauca)
Lepanthes oscarii Archila 2001 Guatemala
Lepanthes oscillifera Luer & R.Escobar 1984 Colombia (Antioquia, Cundinamarca)
Lepanthes osiris Luer & R.Escobar 1994 Colombia (Valle del Cauca)
Lepanthes ostraconopetala Luer & Hirtz 2009 Colombia (Nariño)
Lepanthes otara Luer 1983 S. Ecuador
Lepanthes otopetala Luer 1991 S. Costa Rica to W. Panama
Lepanthes ova-rajae Luer 1987 Costa Rica
Lepanthes ovalis (Sw.) Fawc. & Rendle 1910 Jamaica (Blue Mts.)
Lepanthes oxapampaensis D.E.Benn. & Christenson 2001 Peru
Lepanthes oxybaphon Luer & R.Escobar 1985 Colombia (Norte de Santander)
Lepanthes oxypetala Luer & Hirtz 1988 S. Colombia to NW. Ecuador
Lepanthes oxyphylla Luer & R.Vásquez 1983 Bolivia
Lepanthopsis obliquipetala (Ames & C.Schweinf.) Luer 1991 C. America to Ecuador
Lepanthopsis ornipteridion Dod 1986 Haiti (Massif de la Hotte)
Liparis ochracea Ridl. 1885 Réunion, Madagascar
Liparis ochrantha Schltr. 1911 New Guinea
Liparis odorata (Willd.) Lindl. 1830 Indian Subcontinent to Nansei-shoto, Guam
Liparis oligantha Schltr. 1911 New Guinea
Liparis olivacea Lindl. 1830 C. Nepal
Liparis oppositifolia Szlach. 1993 China (S. Yunnan) to Indo-China
Liparis orbiculata L.O.Williams 1941 Solomon Is. (Makira), Fiji to Samoa
Liparis ornithorrhynchos Ridl. 1885 C. & E. Madagascar
Liparis ovalis Schltr. 1911 New Guinea
Lockhartia oblongicallosa Carnevali & G.A.Romero 2000 Venezuela (Monagas)
Lockhartia obtusata L.O.Williams 1941 Panama
Lockhartia odontochila Kraenzl. 1923 Costa Rica
Lockhartia oerstedii Rchb.f. 1852 Mexico (Oaxaca, Chiapas) to Colombia
Luisia occidentalis Lindl. 1853 Ogasawara-shoto
Lycaste occulta Oakeley 2007 N. South America to Ecuador
Macodes obscura Schltr. 1911 New Guinea
Macroclinium oberonia (Schltr.) Dodson 1984 Colombia
Macroclinium opimum Vierling 2017
Malaxis oblongifolia A.Rich. & Galeotti 1845 79
Malaxis ochreata (S.Watson) Ames 1922 C. & SW. Mexico
Malaxis oroensis Salazar & Suàrez 2018
Masdevallia obscurans (Luer) Luer 1998 Brazil (Pernambuco)
Masdevallia odnalorii Luer, V.N.M.Rao & M.Webb 2011 Peru (Cusco)
Masdevallia odontocera Luer & R.Escobar 1982 NE. Colombia to NW. Venezuela
Masdevallia odontopetala Luer 1978 Ecuador (Morona-Santiago)
Masdevallia olmosii Königer & Sijm 2003 Panama
Masdevallia omorenoi Luer & R.Vásquez 1997 Bolivia
Masdevallia ophioglossa Rchb.f. 1878 Ecuador
Masdevallia ophioglossa subsp. grossa (Luer) Luer 1986 SC. Ecuador
Masdevallia ophioglossa subsp. ophioglossa NC. Ecuador
Masdevallia oreas Luer & R.Vásquez 1981 Bolivia
Masdevallia ortalis Luer 1978 Ecuador
Masdevallia os-draconis Luer & R.Escobar 1978 Colombia
Masdevallia os-viperae Luer & Andreetta 1989 Ecuador (Morona-Santiago)
Masdevallia oscarii Luer & R.Escobar 1979 Colombia (Chocó)
Masdevallia oscitans (Luer) Luer 1998 Brazil (Rio de Janeiro)
Masdevallia ostaurina Luer 2004 Panama
Masdevallia ova-avis Luer 1978 Ecuador (Pichincha, Azuay)
Masdevallia oversteegeniana Luer & Sijm 2010 Peru
Masdevallia oxapampaensis D.E.Benn. & Christenson 2001 Peru
Maxillaria oakes-amesiana Schuit. & M.W.Chase 2015 Colombia to NW. Venezuela
Maxillaria obscura Linden & Rchb.f. 1866 Costa Rica to W. Panama
Maxillaria obtusa (Lindl.) Molinari 2015 S. Trop. America
Maxillaria ochroglossa Schltr. 1924 Colombia
Maxillaria ochroleuca var. longipes Sander 1901 S. Venezuela to Brazil
Maxillaria ochroleuca Lodd. ex Lindl. 1824 S. Trop. America
Maxillaria ochroleuca var. ochroleuca W. South America
Maxillaria oestlundiana L.O.Williams 1942 Mexico (Guerrero)
Maxillaria olivacea (Kraenzl.) P.Ortiz 1991 Colombia (Antioquia)
Maxillaria ophiodens J.T.Atwood 1984 Bolivia
Maxillaria oreocharis Schltr. 1922 Nicaragua to Panama
Maxillaria ornithoglossa Lodd. ex W.H.Baxter 1850
Maxillaria ortizii Christenson 2011 Colombia (Antioquia)
Maxillaria osmantha H.Barbosa 1920 Brazil (Minas Gerais)
Maxillaria oxapampensis J.T.Atwood 2003 Peru
Microchilus ormerodianus Kolan. 2013 Colombia
Microchilus oroensis (Dodson) Ormerod 2007 Ecuador (El Oro)
Microchilus ortgiesii (Rchb.f.) Ormerod 2002 Colombia
Microchilus ovalis Ormerod 2007 Panama
Microchilus ovatus (Lindl.) D.Dietr. 1852 Peru to Bolivia
Microcoelia obovata Summerh. 1945 Kenya to NE. KwaZulu-Natal
Microcoelia ornithocephala P.J.Cribb 1985 S. Malawi
Micropera obtusa (Lindl.) Tang & F.T.Wang 1951 C. Himalaya to Thailand
Microstylis odorata Náves 1880
Microtis oblonga R.S.Rogers 1923 SE. Australia
Microtis oligantha L.B.Moore 1968 New Zealand North I.
Microtis orbicularis R.S.Rogers 1907 S. Australia
Mormodes oberlanderiana F.Lehm. & Kraenzl. 1900 Colombia to NW. Venezuela
Mormodes oceloteoides S.Rosillo 1983 Mexico (Nayarit, Jalisco)
Mormodes oestlundiana Salazar & Hágsater 1990 Mexico (Guerrero)
Mormodes orinocoensis Salazar & G.A.Romero 1994 Colombia to S. Venezuela
Muscarella obliquipetala (Acuña & C.Schweinf.) Karremans 2016 E. Cuba
Muscarella oblonga (Luer & Hirtz) Luer 2006
Mycaranthes obliqua Lindl. 1840 W. Malesia
Mycaranthes oblitterata Blume 1825 Indo-China to W. Malesia and Bali
Myoxanthus octomerioides (Lindl.) Luer 1982 Mexico (Guerrero, Oaxaca, Veracruz) to C. America
Myoxanthus ortizianus Kolan. & Szlach. 2014 Colombia
Myoxanthus ovatipetalus Chiron & Xim.Bols. 2009 Brazil (Espírito Santo)
Neottia oblata (S.C.Chen) Szlach. 1995 China (Chongqing)
Neottia ovata (L.) Bluff & Fingerh. 1838 Europe to Himalaya
Nervilia odorata D.P.Ye, Wild Orchids Yunnan: 141 (2010), contrary to Art. 39.1. (ICN 2010 China (Yunnan)
Nervilia oxyglossa Fukuy. 1937 Caroline Is. (Palau)
Nidema ottonis (Rchb.f.) Britton & Millsp. 1920 Trop. America
Notylia obtusa Schltr. 1920 Colombia
Notylia odontonotos Rchb.f. & Warm. 1881 SE. Brazil
Notylia orbicularis A.Rich. & Galeotti 1845 NC. & S. Mexico to El Salvador
Notylia orbicularis subsp. orbicularis NC. & S. Mexico to El Salvador
Notylia orbicularis subsp. warfordiae Salazar 1994 SW. Mexico
Oberonia obcordata Lindl. 1859 Nepal to Thailand
Oberonia obesa Ames 1915 Philippines (Luzon)
Oberonia oblonga R.S.Rogers 1925 New Guinea
Oberonia odoardi Schltr. 1911 W. Sumatera (G. Singgalang)
Oberonia odontopetala Schltr. 1911 New Guinea
Oberonia oligotricha Schltr. 1905 New Guinea
Oberonia orbicularis Hook.f. 1888 Sikkim
Oberonia ovalis Schltr. 1911 New Guinea
Oberonia oxystophyllum J.J.Sm. 1905 Jawa
Oberonioides oberoniiflora (Seidenf.) Szlach. 1995 Thailand
Octarrhena oberonioides (Schltr.) Schltr. 1911 New Caledonia, Fiji (Viti Levu)
Octarrhena obovata (J.J.Sm.) P.Royen 1979 New Guinea
Octomeria ochroleuca Barb.Rodr. 1877 SE. Brazil
Octomeria octomeriantha (Hoehne) Pabst 1972 Brazil (São Paulo to Paraná)
Octomeria odontoglossoides Luer 2010 Colombia
Octomeria oncidioides Luer 2003 Bolivia
Octomeria oppenheimii Dammer 1909
Octomeria ouropretana H.Barbosa 1920 Brazil (Minas Gerais)
Octomeria oxychela Barb.Rodr. 1881 Guyana, E. & S. Brazil
Odontochilus occultus (Blume) J.M.H.Shaw 2016 Borneo, W. Jawa
Odontoglossum ornatum auct. 1891
Oliveriana ortizii A.Fernández 1969 Colombia
Oncidium oblongatum Lindl. 1844 SW. Mexico
Oncidium obryzatoides Kraenzl. 1922 Costa Rica to Ecuador
Oncidium obryzatum Rchb.f. & Warsz. 1854 Panama to Venezuela and Peru
Oncidium obstipum Königer & Posada 2009 Colombia
Oncidium odoratum (Lindl.) Beer 1854 Colombia to NW. & N. Venezuela
Oncidium oliganthum (Rchb.f.) L.O.Williams ex Correll 1948 Mexico (Oaxaca, Chiapas) to El Salvador
Oncidium orbatum Kraenzl. 1922 Colombia
Oncidium ornithocephalum Lindl. 1855 Colombia
Oncidium ornithopodum Rchb.f. 1879 Colombia
Oncidium ornithorhynchum Kunth 1816 W. South America
Oncidium orthostatoides D.E.Benn. & Christenson 1994 Peru
Oncidium orthotis Rchb.f. 1888 Ecuador to N. Peru
Oncidium oviedomotae Hágsater 1973 Mexico (Michoacán)
Oncidium oxyceras (Königer & J.G.Weinm.) M.W.Chase & N.H.Williams 2008 Ecuador
Ophrys omegaifera subsp. hayekii (H.Fleischm. & Soó) Kreutz 2004 Sicilia, Algeria to N. Tunisia
Ophrys omegaifera H.Fleischm. 1925 Medit.
Ophrys omegaifera subsp. dyris (Maire) Del Prete 1984 S. Iberian Pen., Baleares, Morocco
Ophrys omegaifera subsp. fleischmannii (Hayek) Del Prete 1984 Aegean Is. to Kriti
Ophrys omegaifera subsp. israelitica (H.Baumann & Künkele) G.Morschek & K.Morschek 1996 SC. Greece, Aegean Is. to Jordan
Ophrys omegaifera subsp. omegaifera S. Greece, Aegean Is. to SW. Turkey
Ophrys omegaifera var. basilissa (C.Alibertis, A.Alibertis & H.R.Reinhard) Faurh. 2002 Aegean Is. to E. Kriti
Orchis olbiensis Reut. ex Gren. 1859 NW. Italy (W. Liguria) to NW. Africa
Oreorchis oligantha Schltr. 1924 E. Tibet to China (S. Gansu)
Ornithocephalus obergiae Soto Arenas 1992 Mexico (Chiapas) to Guatemala
Ornithocephalus oberonioides (Schltr.) Toscano & Dressler 2000 Colombia
Oxystophyllum oblongum (Ames & C.Schweinf.) M.A.Clem. 2003 Borneo
Oxystophyllum oligadenium (Schltr.) M.A.Clem. 2003 Sulawesi
Pabstiella osculator Luer & Toscano 2011 Brazil (Espírito Santo)
Paphiopedilum ooii Koop. 1999 Borneo (Sabah)
Pecteilis ophiocephala (W.W.Sm.) Ormerod 2012 China (SW. Yunnan) to N. Myanmar
Pelexia obliqua (J.J.Sm.) Garay 1982 C. America, Cuba, Guadeloupe
Pelexia ochyrae Szlach. 1996 Panama
Pelexia oestrifera (Rchb.f. & Warm.) Schltr. 1920 Brazil
Pelexia olivacea Rolfe 1890 Mexico to Ecuador
Pelexia orobanchoides (Kraenzl.) Schltr. 1920 Colombia, S. Brazil