Thrixspermum
Thrixspermum, commonly known as hairseeds or 白点兰属 , is a genus of flowering plants in the family Orchidaceae. Orchids in this genus are epiphytes, lithophytes or terrestrial plants with flat, leathery leaves and short-lived flowers with the sepals and petals more or less similar to each other. The labellum is rigidly fixed to the column and has three lobes. The side lobes are erect and the middle lobe is thick and fleshy. There are about 190 species distributed from tropical and subtropical Asia to the Western Pacific. Most species grow in lowland or tropical rainforests up to an altitude of 1,200 m.
Description
Orchids in the genus Thrixspermum are epiphytic or lithophytic, rarely terrestrial, monopodial herbs with long thick roots, and flat, fleshy leaves arranged in two ranks with their bases sheathing the stem. The flowers are arranged on a pendulous or arching flowering stem arising from a leaf axil. The flowers are usually short-lived and often open for less than a day. The sepals are free from and more or less similar to each other. The petals are free from each other and similar to, but slightly shorter than the sepals. The labellum is stiffly attached to the column with a pouched base and three lobes, the side lobes erect, usually short and blunt and the middle lobe thick and fleshy. The fruit is a long, thin capsule.Taxonomy and naming
The genus Thrixspermum was first formally described in 1790 by João de Loureiro in Flora Cochinchinensis. The name Thrixspermum is derived from the Ancient Greek words thrix, meaning "hair" and sperma meaning "seed".Species
The following is a list of species of Thrixspermum recognised by the Plants of the World Online as at January 2025:Thrixspermum aberrans Schltr.Thrixspermum acuminatissimum Rchb.f.- *Thrixspermum acuminatissimum subsp. acuminatissimum
- *Thrixspermum acuminatissimum subsp. affine P.O'Byrne & GokusingThrixspermum acutilobum J.J.Sm.Thrixspermum agamense J.J.Sm.Thrixspermum agusanense AmesThrixspermum alabense J.J.WoodThrixspermum alboluteum Toolmal, Schuit. & CulhamThrixspermum amesianum L.O.WilliamsThrixspermum amplexicaule Rchb.f.Thrixspermum anceps Rchb.f.Thrixspermum ancoriferum GarayThrixspermum angustatum L.O.WilliamsThrixspermum angustifolium Rchb.f.Thrixspermum anjunganense P.O'ByrneThrixspermum annamense GarayThrixspermum arachnitiforme Schltr.Thrixspermum aurantiacum J.J.Sm.Thrixspermum bellamabantae Cabactulan, Cootes & R.B.PimentelThrixspermum benedictii P.O'ByrneThrixspermum bicolor P.O'Byrne, P.T.Ong & J.J.Verm.Thrixspermum borneense Ridl.Thrixspermum bosuangii P.O'Byrne & GokusingThrixspermum brevibracteatum J.J.Sm.Thrixspermum brevicapsularis HolttumThrixspermum brevicaule CarrThrixspermum brevipes Schltr.Thrixspermum breviscapum Kocyan & Schuit.Thrixspermum bromeliforme W.SuarezThrixspermum brunnescens J.J.Sm.Thrixspermum calceolus Rchb.f.Thrixspermum canaliculatum J.J.Sm.Thrixspermum carinatifolium Schltr.Thrixspermum carnosum Schltr.Thrixspermum caudatum P.O'Byrne & GokusingThrixspermum celebicum Schltr.Thrixspermum centipeda LourThrixspermum cerinum J.J.Sm.Thrixspermum changlangensis K.GogoiThrixspermum chanianum P.O'Byrne & GokusingThrixspermum clavatum GarayThrixspermum clavilobum J.J.Sm.Thrixspermum complanatum Schltr.Thrixspermum congestum DockrillThrixspermum conigerum J.J.Sm.Thrixspermum cootesii W.SuarezThrixspermum cordulatum J.J.Sm.Thrixspermum corneri HolttumThrixspermum crassifolium Ridl.Thrixspermum crassilabre OrmerodThrixspermum crescentiforme Ames & C.Schweinf.Thrixspermum cryptophallon P.O'Byrne & J.J.Verm.Thrixspermum cymboglossum Schltr.Thrixspermum denticulatum Schltr. Thrixspermum doctersii J.J.Sm.Thrixspermum duplocallosum HolttumThrixspermum elmeri L.O.WilliamsThrixspermum elongatum AmesThrixspermum erythrolomum P.O'Byrne & J.J.Verm.Thrixspermum eximium L.O.WilliamsThrixspermum fantasticum L.O.WilliamsThrixspermum fernandeziae Cootes, Cabactulan & M.LeonThrixspermum filifolium Schltr.Thrixspermum filiforme KuntzeThrixspermum fimbriatum J.J.WoodThrixspermum flaccidum J.J.Sm.Thrixspermum flammeum Toolmal, Schuit. & CulhamThrixspermum fleuryi Tang & F.T.WangThrixspermum formosanum Schltr.Thrixspermum fragrans Ridl.Thrixspermum fulgens Schltr.Thrixspermum fuscum Merr.Thrixspermum gombakense J.J.Sm.Thrixspermum gracilicaule Schltr.Thrixspermum graeffei Rchb.f.Thrixspermum grandiflorum P.O'Byrne & J.J.Verm.Thrixspermum hiepii Aver. & AveryanovaThrixspermum hystrix Rchb.f.Thrixspermum incurvicalcar J.J.Sm.Thrixspermum indicum Vik.Kumar, D.Verma & A.N.RaoThrixspermum indragiriense Schltr.Thrixspermum inquinatum J.J.Sm.Thrixspermum integrum L.O.WilliamsThrixspermum iodochilus Ridl.Thrixspermum japonicum Rchb.f.Thrixspermum javanicum J.J.Sm.Thrixspermum kipandicum P.O'Byrne & GokusingThrixspermum kjellbergii J.J.Sm.Thrixspermum kocyanii J.J.Wood & A.L.LambThrixspermum lampongense J.J.Sm.Thrixspermum lanatum P.O'Byrne & GokusingThrixspermum latifolium J.J.Sm.Thrixspermum latisaccatum J.J.Sm.Thrixspermum lengguanianum P.T.Ong & P.O'ByrneThrixspermum leucorachne Ridl.Thrixspermum ligulatum L.O.WilliamsThrixspermum linearifolium AmesThrixspermum lingiae P.O'Byrne & GokusingThrixspermum linusii J.J.Wood & A.L.LambThrixspermum lombokense J.J.Sm.Thrixspermum longicauda Ridl.Thrixspermum longilobum J.J.Sm.Thrixspermum longipedicellatum Kocyan & Schuit.Thrixspermum longipilosum J.J.Sm.Thrixspermum loogemanianum Schltr.Thrixspermum lucidum Schltr.Thrixspermum luciferum P.O'Byrne & J.J.Verm.Thrixspermum maculatum Schltr.Thrixspermum majus Kocyan & Schuit.Thrixspermum malayanum J.J.Sm.Thrixspermum megacarpum P.O'Byrne, A.L.Lamb & P.T.OngThrixspermum merapohense P.O'Byrne & P.T.OngThrixspermum mergitiferum P.O'Byrne & J.J.Verm.Thrixspermum merguense KuntzeThrixspermum milneri P.O'Byrne & Gokusing)Thrixspermum montanum Ridl.Thrixspermum multicolor Merr.Thrixspermum neohibernicum Schltr.Thrixspermum nicolasiorum Calaramo, Cootes & NaiveThrixspermum obtusum Thrixspermum obyrneanum Toolmal, P.T.Ong & Schuit.Thrixspermum ochraceum P.O'Byrne, P.T.Ong & J.J.Verm.Thrixspermum odoratum X.Q.Song, Q.W.Meng & Y.B.LuoThrixspermum olidum P.O'ByrneThrixspermum oreadum Schltr.Thrixspermum pachychilum P.O'Byrne & GokusingThrixspermum pardale Schltr.Thrixspermum patens J.J.Sm.Thrixspermum patkeiense K.GogoiThrixspermum pauciflorum KuntzeThrixspermum pellicerae Cootes, Cabactulan, R.B.Pimentel & M.LeonThrixspermum pensile Schltr.Thrixspermum pinocchio P.O'Byrne & J.J.Verm.Thrixspermum platycaule HolttumThrixspermum platystachys Schltr.Thrixspermum poilanei Tang & F.T.WangThrixspermum polystictum Toolmal, Schuit., & SuddeeThrixspermum ponapense TuyamaThrixspermum praetermissum Toolmal, Schuit., & SuddeeThrixspermum psiloglottis Schltr.Thrixspermum pugionifolium Schltr.Thrixspermum pulchellum Schltr.Thrixspermum pulchrum CarrThrixspermum pulverulentum Kocyan & Schuit.Thrixspermum punctatum J.J.Sm.Thrixspermum purpurascens Rchb. f.Thrixspermum pusillum GarayThrixspermum pygmaeum HolttumThrixspermum quinquelobum AmesThrixspermum raciborskii J.J.Sm
- * Thrixspermum raciborskii subsp. brevipollinium P.O'Byrne & Ent
- * Thrixspermum raciborskii subsp. raciborskiiThrixspermum recurvum KuntzeThrixspermum remotiflorum J.J.Sm.Thrixspermum rimauense J.J.Wood & A.L.LambThrixspermum rimiae P.O'Byrne & EntThrixspermum robinsonii AmesThrixspermum roseum J.J.Sm.Thrixspermum rostratum AmesThrixspermum rubrocalcaratum P.O'Byrne & GokusingThrixspermum saccatum P.O'Byrne & J.J.Verm.Thrixspermum sagoense J.J.Sm.Thrixspermum samarindae Schltr.Thrixspermum sarawakense AmesThrixspermum sarcophyllum GarayThrixspermum saruwatarii Schltr.Thrixspermum scandens P.O'ByrneThrixspermum scopa HolttumThrixspermum scortechinii KuntzeThrixspermum semiteretifolium J.J.Wood & A.L.LambThrixspermum simile Tollmal, Schuit. & UtteridgeThrixspermum simum J.J.Sm.Thrixspermum squarrosum J.J.Sm.Thrixspermum stelidioides Aver. & AveryanovaThrixspermum subteres J.J.Sm.Thrixspermum subulatum Rchb.f.Thrixspermum sumatranum J.J.Sm.Thrixspermum sutepense Tang & F.T.WangThrixspermum taeniophyllum Jun Y.Zhang, H.He & Yue H.ChengThrixspermum tahanense CarrThrixspermum taianum P.O'Byrne & P.T.OngThrixspermum tenuicalcar CarrThrixspermum teretifolium P.O'Byrne & J.J.Verm.Thrixspermum torajaense P.O'ByrneThrixspermum tortum J.J.Sm.Thrixspermum triangulare Ames & C.Schweinf.Thrixspermum trichoglottis KuntzeThrixspermum tsii W.H.Chen & Y.M.ShuiThrixspermum tubulatum P.O'ByrneThrixspermum tylophorum Schltr.Thrixspermum validum J.J.Sm.Thrixspermum vanoverberghii AmesThrixspermum ventricosum J.J.Wood & A.L.LambThrixspermum walkeri Seidenf. & P.OrmerodThrixspermum warianum Schltr.Thrixspermum weberi AmesThrixspermum wenzelii AmesThrixspermum westenenkii Kocyan & Schuit.Thrixspermum williamsianum OrmerodThrixspermum xantholeucum Schltr.Thrixspermum xantholomum P.O'Byrne & J.J.Verm.