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FOC | Family List | FOC Vol. 25 | Orchidaceae

43. Hemipiliopsis Y. B. Luo & S. C. Chen, Novon. 13: 450. 2003.

紫斑兰属 zi ban lan shu

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

Herbs, terrestrial. Tubers ellipsoid to subellipsoid, fleshy; roots filiform. Stem erect, spotted with purple, usually with 1 or rarely 2 leaves near base. Leaves elliptic to ovate-oblong, base shortly petiolate and sheathing stem, apex acute or acuminate. Inflorescence a terminal raceme, with several to many well-spaced flowers; peduncle, rachis, floral bracts, pedicel, and ovary all spotted with purple. Flowers resupinate, all parts apart from lip pale purple, spotted with purple. Dorsal sepal connivent with petals and forming a hood, erect, obovate; lateral sepals spreading or reflexed, obliquely ovate-elliptic. Petals ovate; lip subovate to flabellate, base spurred, apex 3-lobed; spur conic, abruptly contracted near tip and then swollen to form a globose apex. Column short, with 2 lateral appendages (1 on either side of anther); anther sessile, erect, with 2 parallel locules; rostellum shallowly 3-lobed; lateral lobes protruding, not converging; pollinia 2, granular-farinaceous, sectile, each attached by a slender caudicle to a viscidium; viscidia small, naked, borne directly above spur mouth at apices of lateral rostellum lobes; stigma 2-lobed, set in cavity at posterior margin of rostellum. Capsule ellipsoid.

One species: SW China, NE India.

The sole species was referred initially to Habenaria, but it differs from other members of that genus in habit, structure of the stigma, and lack of obvious anther canals. The shallowly 3-lobed rostellum, the orientation of the rostellum lobes, and the positioning of the viscidia appear to distinguish it from Hemipilia, while the shape of the lip, the non-converging lateral rostellum lobes, and various vegetative characters distinguish it also from Brachycorythis.

Lower Taxon


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