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FOC | Family List | FOC Vol. 25 | Orchidaceae

74. Yoania Maximowicz, Bull. Acad. Imp. Sci. Saint-Pétersbourg. 18: 68. 1872.

宽距兰属 kuan ju lan shu

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

Herbs, terrestrial, holomycotrophic. Rhizome cylindric or coralloid, stout, fleshy, branched, with many scalelike sheaths. Stem erect, stout, fleshy, with many scalelike or cucullate sheaths, leafless, pale brown to pinkish white. Inflorescence terminal, racemose, laxly or subdensely few to several flowered; floral bracts often prominent. Flowers purplish rose to yellowish, fleshy; pedicel and ovary elongate. Sepals and petals free, spreading to connivent, ovate. Petals often wider and shorter than sepals; lip oblong, concave, adnate to short column foot at base, spurred at base; disk with a prominent central papillate-pubescent callus; spur broad, protruding forward, parallel to lip, apex obtuse. Column erect, broad, with a fingerlike process projecting on either side of anther at apex, with short column foot at base; anther terminal, incumbent, 2-locular, apex acuminate; pollinia 4, in 2 pairs, granular-farinaceous, sectile, lacking conspicuous caudicles, attached directly to a common viscidium; stigma concave, broad and large; rostellum inconspicuous.

Four species: China, NE India, Japan, Vietnam; one species in China.

Lower Taxon


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