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FOC | Family List | FOC Vol. 25 | Orchidaceae

47. Androcorys Schlechter, Repert. Spec. Nov. Regni Veg. Beih. 4: 52. 1919.

兜蕊兰属 dou rui lan shu

Authors: Xinqi Chen, Stephan W. Gale & Phillip J. Cribb

Herbs, terrestrial, small. Tuber globose to ovoid, fleshy, pubescent. Stem erect, slender, glabrous, with 1 basal leaf. Leaf ovate to narrowly elliptic, base attenuate into amplexicaul sheath. Inflorescence erect, terminal, with several to more than 10 flowers arranged in a short, ± dense raceme; floral bracts very small, scalelike. Flowers resupinate, usually yellowish to green, small; ovary twisted, fusiform. Sepals free; dorsal sepal erect, often broad, concave, forming a hood with petals; lateral sepals longer and narrower than dorsal sepal. Petals concave; lip reflexed, ligulate or linear, small, base often dilated, spurless, entire. Column short, with 2 lateral appendages; anther erect, with 2 divergent, hooded locules and broad connective; pollinia 2, clavate, granular-farinaceous, sectile, each attached to a small viscidium; rostellum triangular; stigma 2-gibbous, attached to base of rostellum.

Six species: from the Himalayas through S China to Japan; five species (three endemic) in China.

1 Lateral sepals pendulous and parallel to lip, lower margins connivent with each other.   1 A. ophioglossoides
+ Lateral sepals spreading, not parallel to lip, lower margins not connivent with each other   (2)
2 (1) Sepal margins entire; petals shorter than or ca. as long as dorsal sepal   (3)
+ Sepal margins denticulate; petals longer than dorsal sepal   (4)
3 (2) Floral bracts broadly ovate, not spirally twisted; dorsal sepal 1-1.2 mm wide, apex obtuse.   2 A. pugioniformis
+ Floral bracts linear, spirally twisted; dorsal sepal 1.3-1.8 mm wide, apex apiculate.   3 A. spiralis
4 (2) Floral bracts ovate, ca. 1.5 mm; petals elliptic or obliquely orbicular, ca. as broad as dorsal sepal.   4 A. pusillus
+ Floral bracts broadly ovate, ca. 0.8 mm; petals obliquely oblong-lanceolate, narrower than dorsal sepal.   5 A. oxysepalus

Lower Taxa


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