; Prodr. Fl. Nov. Holland. 326 (1810), nom. cons.
Distribution: mostly Australia (many undescribed spp. in Western Australia), New Zealand (26-28), 2 New Guinea, few New Caledonia. The genus has suffered extensive splitting in recent years, which is probably not justified, and is treated here sensu lato, following Genera Orchidacearum.
= Bunochilus D.L.Jones & M.A.Clem.; Austral. Orchid Res. 4: 66 (2002)
= Crangonorchis D.L.Jones & M.A.Clem.; Austral. Orchid Res. 4: 67 (2002)
= Diplodium Sw.; Mag. Neuesten Entdeck. Gesammten Naturk. Ges. Naturf. Freunde Berlin 4: 84 (1810)
= Eremorchis D.L.Jones & M.A.Clem.; Austral. Orchid Res. 4: 72 (2002)
= Hymenochilus D.L.Jones & M.A.Clem.; Austral. Orchid Res. 4: 72 (2002)
= Linguella D.L.Jones & M.A.Clem.; Austral. Orchid Res. 4: 74 (2002)
= Oligochaetochilus Szlach.; Polish Bot. J. 46(1): 23 (2001)
= Petrorchis D.L.Jones & M.A.Clem.; Austral. Orchid Res. 4: 78 (2002)
= Pharochilum D.L.Jones & M.A.Clem.; Austral. Orchid Res. 4: 80 (2002)
= Plumatichilos Szlach.; Polish Bot. J. 46(1): 22 (2001)
= Pterostylis sect.Oligochaetochilus (Szlach.) Janes & Duretto; Austrobaileya 8(2): 221 (2010)
= Pterostylis sect.Speculantha (D.L.Jones & M.A.Clem.) Janes & Duretto; Austrobaileya 8(2): 221 (2010)
= Ranorchis D.L.Jones & M.A.Clem.; Austral. Orchid Res. 4: 82 (2002)
= Speculantha D.L.Jones & M.A.Clem.; Austral. Orchid Res. 4: 82 (2002)
= Stamnorchis D.L.Jones & M.A.Clem.; Austral. Orchid Res. 4: 83 (2002)
= Taurantha D.L.Jones & M.A.Clem.; Austral. Orchid Res. 4: 85 (2002)
= Urochilus D.L.Jones & M.A.Clem.; Austral. Orchid Res. 4: 87 (2002)
= xTaurodium D.L.Jones & M.A.Clem.; Austral. Orchid Res. 4: 87 (2002)