; Hist. Orchid. Tab. Esp. 3 & Ic. t. 93-97 (1822)
Distribution: Pantropical, but mostly Old World: over 650 in New Guinea, other centers in Malesia (Borneo 288) and Madagascar, fewer than 100 in tropical America and tropical Africa each. The genus is taken here in a very broad sense, following Vermeulen et al. (2014). All attempts to split it have been unsuccessful so far.
= Acrochaene Lindl.; Fol. Orchid. 2(Acrochaene): no. 1 (1853)
= Adelopetalum Fitzg.; J. Bot. 29: 152 (1891)
= Anisopetalon Hook.; Exot. Fl. 2: t. 149 (1825)
= Blepharochilum M.A.Clem. & D.L.Jones; Orchadian 13(11): 499 (2002)
= Bolbophyllaria Rchb.f.; Bot. Zeitung (Berlin) 10: 934 (1852)
= Bolbophyllopsis Rchb.f.; Bot. Zeitung (Berlin) 10: 933 (1852)
= Bolbophyllum Spreng.; Syst. Veg., ed. 16 [Sprengel] 3: 681 (1826), orth. var.
= Bulbophyllaria S.Moore; Fl. Mauritius [J.G.Baker] 344 (1877), orth. var.
= Canacorchis Guillaumin; Bull. Mus. Natl. Hist. Nat., Sér. 2, 35: 653 (1964)
= Carparomorchis M.A.Clem. & D.L.Jones; Orchadian 13(11): 499 (2002)
= Chaseella Summerh.; Kirkia 1: 88 (1961)
= Cirrhopetalum Lindl.; Gen. Sp. Orchid. Pl. 45 (1830), nom. cons.
= Cochlia Blume; Bijdr. Fl. Ned. Ind. 320, t. 59 (1825)
= Codonosiphon Schltr.; Repert. Spec. Nov. Regni Veg., Beih. 1: 893 (1913)
= Dactylorhynchus Schltr.; Repert. Spec. Nov. Regni Veg., Beih. 1: 890 (1913)
= Didactyle Lindl.; Fol. Orchid. 1(Didactyle): no. 1 (1852)
= Diphyes Blume; Bijdr. Fl. Ned. Ind. 310, t. 66 (1825)
= Drymoda Lindl.; Sert. Orchid. t. 8 C (1838)
= Ephippium Blume; Bijdr. Fl. Ned. Ind. 308, t. 65 (1825)
= Epicranthes Blume; Bijdr. Fl. Ned. Ind. 306, t. 9 (1825)
= Epicrianthes Blume; Fl. Javae, Praef.: vii (1828), orth. var.
= Ferruminaria Garay, Hamer & Siegerist; Nordic J. Bot. 14(6): 635 (1994)
= Fruticicola (Schltr.) M.A.Clem. & D.L.Jones; Orchadian 13(11): 499 (2002)
= Genyorchis Schltr.; Westafrik. Kautschuk-Exped. 1899-1900: 280 (1900), nomen, et Bot. Jahrb. Syst. 38: 11 (1905), descr.
= Hamularia Aver. & Averyanova; Komarovia 4: 18 (-19) (2006)
= Hapalochilus (Schltr.) Senghas; Orchidee (Hamburg) 29(6): 248 (1978)
= Henosis Hook.f.; Fl. Brit. India [J.D.Hooker] 5: 771 (1890) 6: 189 (1890), et Hooker´s Icon. Pl. 21: t. 2051 (1891)
= Hippoglossum Breda; Gen. Sp. Orchid. Asclep. 3: t. 14 (1829), nom. illeg.
= Hordeanthos Szlach.; Richardiana 7(2): 88 (2007)
= Hyalosema (Schltr.) Rolfe; Orchid Rev. 27: 130 (1919)
= Ichthyostomum D.L.Jones, M.A.Clem. & Molloy; Orchadian 13: 499 (2002)
= Ione Lindl.; Fol. Orchid. 2(Ione): no. 1 (1853)
= Jejosephia A.N.Rao & Mani; J. Econ. Taxon. Bot. 7(1): 217 (1985)
= Kaurorchis D.L.Jones & M.A.Clem.; Orchadian 13(11): 499 (2002) (Karorchis)
= Lepanthanthe (Schltr.) Szlach.; Richardiana 7(2): 82 (2007)
= Lyraea Lindl.; Gen. Sp. Orchid. Pl. 46 (1830)
= Macrolepis A.Rich.; Voy. Astrolabe 25, t. 19 (1833)
= Malachadenia Lindl.; Edwards´s Bot. Reg. 25(Misc.): 67 (1839)
= Mastigion Garay, Hamer & Siegerist; Nordic J. Bot. 14(6): 635 (1994)
= Megaclinium Lindl.; Bot. Reg. t. 989 (1826)
= Monomeria Lindl.; Gen. Sp. Orchid. Pl. 61 (1830)
= Monosepalum Schltr.; Repert. Spec. Nov. Regni Veg., Beih. 1: 682, 895 (1912 publ. 1913)
= Odontostylis Blume; Fl. Javae, Praef.: vii (1828), nom. superfl.
= Odontostylis Breda; Gen. Sp. Orchid. Asclep. 1: t. 4 (1828), nom. illeg.
= Oncophyllum D.L.Jones & M.A.Clem.; Orchadian 13: 420 (2001)
= Osyricera Blume; Bijdr. Fl. Ned. Ind. 307, t. 58 (1825)
= Oxysepala Wight; Icon. Pl. Ind. Orient. [Wight] 5: 17 (1851)
= Pachyrhachis A.Rich.; Herb. Gén. Amat., Sér. 2, 3: 23 (1845)
= Papulipetalum (Schltr.) M.A.Clem. & D.L.Jones; Orchadian 13(11): 500 (2002)
= Pedilochilus Schltr.; Nachtr. Fl. Schutzgeb. Südsee [Schumann & Lauterbach] 218 (1905)
= Pelma Finet; Notul. Syst. (Paris) 1: 112 (1909)
= Peltopus (Schltr.) Szlach. & Marg.; Polish Bot. J. 46(2): 114 (2001)
= Phyllorkis Thouars; Nouv. Bull. Sci. Soc. Philom. Paris 1: 319 (1809), nom. rej.
= Rhytionanthos Garay, Hamer & Siegerist; Nordic J. Bot. 14(6): 637 (1994)
= Saccoglossum Schltr.; Repert. Spec. Nov. Regni Veg., Beih. 1: 683 (1912)
= Sarcobodium Beer; Prakt. Stud. Orchid. 306 (1854)
= Sarcopodium Lindl. & Paxton; Paxton´s Fl. Gard. 1: 155 (1850), nom. illeg.
= Serpenticaulis M.A.Clem. & D.L.Jones; Orchadian 13(11): 500 (2002)
= Sestochilos Breda; Gen. Sp. Orchid. Asclep. 1: t. 3 (1828)
= Spilorchis D.L.Jones & M.A.Clem.; Orchadian 15(1): 37 (2005)
= Sunipia Lindl.; Orchid. Scelet. 14, 21, 25 (1826)
= Synarmosepalum Garay, Hamer & Siegerist; Nordic J. Bot. 14(6): 639 (1994)
= Tapeinoglossum Schltr.; Repert. Spec. Nov. Regni Veg., Beih. 1: 892 (1913)
= Taurostalix Rchb.f.; Bot. Zeitung (Berlin) 10: 933 (1852)
= Trachyrhachis (Schltr.) Szlach.; Richardiana 7(2): 85 (2007)
= Trias Lindl.; Gen. Sp. Orchid. Pl. 60 (1830)
= Tribrachia Lindl.; Bot. Reg. sub t. 832 (1824), et Coll. Bot. t. 41 (1825)
= Tripudianthes (Seidenf.) Szlach. & Kras; Richardiana 7(2): 94 (2007)
= Vesicisepalum (J.J.Sm.) Garay, Hamer & Siegerist; Nordic J. Bot. 14(6): 641 (1994)
= xCirrhophyllum Anon.; Orchid Rev. 73(859, noh): 1 (1965)
= Xiphizusa Rchb.f.; Bot. Zeitung (Berlin) 9: 919 (1852)
= Zygoglossum Reinw. ex Blume; Cat. Gew. Buitenzorg [Blume] 100 (1823), nomen, et Syll. Pl. Nov. 2: 4 (1828)
