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Pachystoma (Greek, meaning thick mouth, referring to the thick lip). Orchidaceae. Terrestrial orchids with leafless scapes from underground nodose rhizomes: pseudobulbs producing 1-2 lvs.: sepals and petals similar, the lateral sepals occasionally forming a chin, all upright; labellum 3-lobed, forming a sack with the base of the column;
anthers bent over; pollinia 8, lying in pairs and bound into 4 by elastic threads.
About 10 species, chiefly E. Indian and Malayan, but 1 from Trop. Afr. P. Thomsoniana, Reichb. f. (Ancis- trochilus Thomsonianus, Rolfe), is the most commonly cult, species. It has large fls. with white sepals and petals, and the lip has green erect side lobes thickly dark purple-spotted and a narrow recurved midlobe which is white nearly covered with deep purple lines. Trop. Afr. B.M. 6471. J.H. III. 51:147.
G.C. II. 12:582 (note), 624, 625; 18:501. Gt. 30:1061.—A warmhouse plant. P. Thomsoniana is now referred to Ancistrochilus by Rolfe. Ancistrochilus has 2 species and is readily distinguished from Pachystoma by the pollinia being united to a single stipitate appendage as well as by the remarkable lip and spreading segms.
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{{Taxobox | color = lightgreen | name = ''Pachystoma'' | regnum = [[Plant]]ae | divisio = [[Flowering plant|Magnoliophyta]] | classis = [[Monocotyledon|Liliopsida]] | ordo = [[Asparagales]] | familia = [[Orchidaceae]] | subfamilia = [[Epidendroideae]] | tribus = [[Arethuseae]] | subtribus = [[Bletiinae]] | genus = '''''Pachystoma''''' | genus_authority = [[Karl Ludwig von Blume|Blume]] | subdivision_ranks = Species | subdivision = *''[[Pachystoma holtzei]]'' *''[[Pachystoma nutans]]'' *''[[Pachystoma pubescens]]'' *''[[Pachystoma senile]]'' *etc. }} '''''Pachystoma''''' is a [[genus]] of [[orchid]]s ([[family (biology)|family]] Orchidaceae). The genus has about 10 species, distributed over [[India]], [[China]], [[Indomalesia]], northern [[Australia]] and several [[Pacific Islands]] (including [[New Caledonia]]). The genera '''''Apaturia''''' <small>[[John Lindley|Lindl.]]</small>, '''''Pachychilus''''' <small>[[Karl Ludwig von Blume|Blume]]</small> and '''''Pachystylis''''' <small>[[Karl Ludwig von Blume|Blume]]</small> have been brought into [[synonymy]] with ''Pachystoma''. [[Category:Orchid genera]]
{{Taxobox | color = lightgreen | name = ''Pachystoma'' | regnum = [[Plant]]ae | divisio = [[Flowering plant|Magnoliophyta]] | classis = [[Monocotyledon|Liliopsida]] | ordo = [[Asparagales]] | familia = [[Orchidaceae]] | subfamilia = [[Epidendroideae]] | tribus = [[Arethuseae]] | subtribus = [[Bletiinae]] | genus = '''''Pachystoma''''' | genus_authority = [[Karl Ludwig von Blume|Blume]] | subdivision_ranks = Species | subdivision = *''[[Pachystoma holtzei]]'' *''[[Pachystoma nutans]]'' *''[[Pachystoma pubescens]]'' *''[[Pachystoma senile]]'' *etc. }} '''''Pachystoma''''' is a [[genus]] of [[orchid]]s ([[family (biology)|family]] Orchidaceae). The genus has about 10 species, distributed over [[India]], [[China]], [[Indomalesia]], northern [[Australia]] and several [[Pacific Islands]] (including [[New Caledonia]]). The genera '''''Apaturia''''' <small>[[John Lindley|Lindl.]]</small>, '''''Pachychilus''''' <small>[[Karl Ludwig von Blume|Blume]]</small> and '''''Pachystylis''''' <small>[[Karl Ludwig von Blume|Blume]]</small> have been brought into [[synonymy]] with ''Pachystoma''. [[Category:Orchid genera]]