Flora of China
  FOC Vol.25 (2009)              | Family List  Orchidaceae  PDF Aphyllorchis  PDF   | Link Font:+ Big | - Small
   59. Aphyllorchis  Blume Tab. Pl. Jav. Orchid. ad t. 77. 1825.
无叶兰属   wu ye lan shu
Authors:Authors: Xinqi Chen & Stephan W. Gale

Sinorchis S. C. Chen.


Herbs, terrestrial, leafless, holomycotrophic. Rhizome short; roots fascicled, spreading, fleshy. Stem erect, fleshy, unbranched, usually pale brown, with loose cymbiform or cylindric sheaths enclosing proximal nodes and scalelike sterile bracts at distal nodes. Inflorescence terminal, racemose, few to many flowered; floral bracts membranous. Flowers resupinate, small to medium-sized, often with long pedicel and ovary. Sepals similar, free, often weakly concave-cymbiform. Petals similar to but shorter and narrower than sepals; lip adnate to base of column, 2-partite; hypochile often winged; epichile hinged at junction with hypochile and often deflexed, entire or lobed. Column arcuate, long, slender; anther borne at anterior margin of clinandrium, suberect, 2-locular; filament extremely short; staminodes 2 (1 on either side of column), apical, white, spotted with silver; pollinia 2, granular-farinaceous, caudicles absent; viscidium large; stigma concave, near apex of column; rostellum very small. Capsule usually pendulous.

About 30 species: mainly in tropical Asia and the Himalayas, extending as far north as Japan and south to Australia; five species (one endemic) in China.

1Lip not distinct, similar to lateral petals.1  A. simplex    单唇无叶兰
+Lip clearly distinct from petals(2)
2(1)Floral bracts shorter than pedicel and ovary(3)
+Floral bracts longer than pedicel and ovary(4)
3(2)Sepal 9-11 mm, apex obtuse to subacute.2  A. montana    无叶兰
+Sepal 30-35 mm, apex long cuspidate.3  A. caudata    尾萼无叶兰
4(2)Rachis 19-22 cm; flowers yellowish green; floral bracts linear to linear-lanceolate, 3-4 mm wide; lip contracted at middle into hypochile and epichile.4  A. alpina    高山无叶兰
+Rachis to 6 cm; flowers pale purplish brown; floral bracts ovate to elliptic-lanceolate, 6-8 mm wide; lip contracted near base into hypochile and epichile.5  A. gollanii    大花无叶兰
   Lower Taxon
  • Aphyllorchis montana  H. G. Reichenbach  无叶兰
  • Aphyllorchis caudata  Rolfe ex Downie  尾萼无叶兰
  • Aphyllorchis simplex  Tang & F. T. Wang  单唇无叶兰
  • Aphyllorchis alpina  King & Pantling  高山无叶兰
  • Aphyllorchis gollanii  Duthie  大花无叶兰