Mormodes Mormolyca Mycaranthes Myoxanthus Myrmechila D.L.Jones & M.A.Clem (2005) Myrmechis Myrmecophila Myrosmodes Mystacidium N Nabaluia Nageliella Nematoceras Neobathiea Neobenthamia Neobolusia Neoclemensia Neocogniauxia Neodryas Neoescobaria Neofinetia Neogardneria Neogyna Neomoorea Neotinea Neottia (including Listera) Neowilliamsia Nephelaphyllum Nephrangis Nervilia Neuwiedia Nidema: fairy orchid Nigritella Nitidobulbon Nohawilliamsia Nothodoritis Nothostele Notylia O Oberonia Oberonioides Octarrhena Octomeria Odontochilus Odontoglossum Kunth Odontorrhynchus Oeceoclades: monk orchid Oeonia Oeoniella Oerstedella Oestlundorchis Olgasis Oligochaetochilus Oligophyton Oliveriana Omoea Oncidium: dancing-lady orchid Ophidion Ophrys: ophrys Orchipedum Orchis: orchis Oreorchis Orestias Orleanesia Ornithidium Ornithocephalus Ornithochilus Orthoceras Osmoglossum Ossiculum Osyricera Otochilus Otoglossum Otostylis Oxystophyllum P Pabstia Garay Pachites Pachyphyllum Pachyplectron Pachystele Pachystoma Palmorchis Panisea Pantlingia Paphinia Paphiopedilum Papilionanthe Papillilabium Paphiopedilum: Venus' slipper Papperitzia Papuaea Paradisanthus Paralophia P.J.Cribb & Hermans (2005) Paraphalaenopsis Parapteroceras Pecteilis Pedilochilus Pedilonum Pelatantheria Pelexia: hachuela Penkimia Pennilabium Peristeranthus Peristeria Peristylus Pescatoria Phaius: nun's-hood orchid Phalaenopsis: moth orchid Pheladenia Pholidota Phoringopsis Phragmipedium Phragmorchis Phreatia Phymatidium Physoceras Physogyne Pilophyllum Pinelia Piperia: rein orchid Pityphyllum Platanthera: fringed orchid, bog orchid Platantheroides Platycoryne Platyglottis Platylepis Platyrhiza Platystele Platythelys: jug orchid Plectorrhiza Plectrelminthus Plectrophora Pleione Pleurothallis: bonnet orchid Pleurothallopsis Plexaure Plocoglottis Poaephyllum Podangis Podochilus Pogonia: snake-mouth orchid Pogoniopsis Polycycnis Polyotidium Polyradicion: palmpolly Polystachya Pomatocalpa Ponera Ponerorchis Ponthieva: shadow witch Porpax Porphyrodesme Porphyroglottis Porphyrostachys Porroglossum Porrorhachis Potosia Prasophyllum Prescottia: Prescott orchid Pristiglottis Proctoria Promenaea Prosthechea Pseudacoridium Pseuderia Pseudocentrum Pseudocranichis Pseudoeurystyles Pseudogoodyera Pseudolaelia Pseudorchis Pseudovanilla Psilochilus: ragged-lip orchid Psychilis: peacock orchid Psychopsiella (sometimes included in Psychopsis) Psychopsis: butterfly orchid Psygmorchis Pterichis Pteroceras Pteroglossa Pteroglossaspis: giant orchid Pterostemma Pterostylis Pterygodium Pygmaeorchis Pyrorchis Q Quekettia Quisqueya R Rangaeris Rauhiella Raycadenco Reichenbachanthus Renanthera Lour. Renantherella Restrepia Restrepiella Restrepiopsis Rhaesteria Rhamphorhynchus Rhinerrhiza Rhetinantha Rhipidorchis Rhipidoglossum Rhizanthella Rhomboda Rhynchogyna Rhyncholaelia Rhynchophreatia Rhynchostele Rhynchostylis Rhytionanthos Ridleyella Rimacola Risleya Robiquetia Rodriguezia Ruiz & Pav. Rodrigueziella Rodrigueziopsis Roezliella Roeperocharis Rossioglossum Rubellia (Luer) Luer (2004) Rudolfiella Rusbyella S Saccoglossum Saccolabiopsis Saccolabium Sacoila: terrestrial orchid Salacistis Salpistele Sanderella Sarcanthopsis Sarcochilus Sarcoglottis Sarcoglyphis Sarcophyton Sarcorhynchus Sarcostoma Satyridium Satyrium Saundersia Sauroglossum Sauvetrea Scaphosepalum Scaphyglottis: Malaysian orchid Scelochiloides Scelochilus Schiedeella Schistotylus Schizochilus Schizodium Schlimia Schoenorchis Schomburgkia Schunkea Schwartzkopffia Scuticaria Sedirea Seegeriella Seidenfadenia Seidenfia Sepalosiphon Serapias Sertifera Sievekingia Sigmatostalix Silvorchis Sinorchis Sirhookera Skeptrostachys Smithsonia Smitinandia Sobennikoffia Sobralia Solenangis Solenidiopsis Solenidium Solenocentrum Sophronitella Sophronitis Soterosanthus Sotoa Spathoglottis: ground orchid Specklinia Lindl. (1830) Sphyrarhynchus Sphyrastylis Stichorkis Spiculaea Spilotantha Spiranthes: ladies'-tresses Stalkya Stanhopea Staurochilus Stelis: leach orchid Stellilabium Stenia Stenocoryne Stenoglottis Stenoptera Stenorrhynchos: ladies'-tresses Stephanothelys Stereochilus Stereosandra Steveniella Stictophyllum Stigmatodactylus Stigmatosema Stolzia Suarezia Summerhayesia Sunipia Sutrina Svenkoeltzia Symphyglossum Synanthes Synarmosepalum Systeloglossum Sampaguita T Taeniophyllum Taeniorrhiza