ORCHIDACEAE - China

164ORCHIDOIDEAEentire or slightly denticulate, apex rounded; lip ligulate, 2–2.2 ×ca. 0.7 mm, fleshy, base dilated, apex obtuse; connective broad.Fl. Jul.Forests, alpine meadows; 2500–3500 m. C Taiwan [Japan].5. Androcorys oxysepalus K. Y. Lang, Guihaia 16: 106. 1996.尖 萼 兜 蕊 兰 jian e dou rui lanPlants 6–7 cm tall. Tuber globose, ca. 5 mm in diam. Stemerect or ascending, slender, with 2 tubular sheaths and 1 leaf atbase. Leaf elliptic to oblong, 1.5–1.7 × 0.8–0.9 cm, apexobtuse. Rachis 1.8–2 cm, 6- or 7-flowered; floral bracts broadlyovate, ca. 0.8 mm, much shorter than ovary, apex acute. Flowersgreen, small; ovary and pedicel ca. 3 mm. Dorsal sepalerect, broadly ovate, concave, ca. 1.6 × 1.2 mm, 1-veined, margindenticulate, apex acuminate; lateral sepals spreading, narrowlyoblong-lanceolate, ca. 3 × 1 mm, 1-veined, margin denticulate,apex acuminate and thickened. Petals erect, obliquelyoblong-lanceolate, concave, ca. 2 × 0.8 mm, 1-veined, entire,apex obtuse; lip pendulous, linear-lanceolate, ca. 1.5 mm,fleshy, base dilated and ca. 0.6 mm wide, apex obtuse; connectivebroad. Fl. Aug.● Abies forests; ca. 3900 m. NW Yunnan.48. POROLABIUM Tang & F. T. Wang, Bull. Fan Mem. Inst. Biol. Bot. 10: 36. 1940.孔 唇 兰 属 kong chun lan shuChen Xinqi ( 陈 心 启 Chen Sing-chi); Stephan W. Gale, Phillip J. CribbHerbs, terrestrial, small. Tubers subglobose, small. Stem erect, with 2 or 3 sheathing cataphylls at base and 1 cauline leaf. Leaflinear-lanceolate, base vaginate and sheathing stem, apex obtuse. Inflorescence terminal, ebracteate, racemose, 6–8-flowered; floralbracts broadly ovate, small, much shorter than ovary. Flowers resupinate, yellowish green to green. Dorsal sepal connivent withpetals, erect, ovate, concave; lateral sepals spreading or deflexed, narrowly ovate, apex obtuse. Petals erect, obliquely ovate, apexobtuse; lip ligulate, entire, apex obtuse, dilated and with 2 glands at base, spurless. Column short; anther large, 2-locular, with narrowconnective; pollinia 2; rostellum prominent; lateral lobes spreading; stigma simple, pulvinate, not adnate to rostellum.● One species: China.In habit, Porolabium is similar to the genus Herminium (to which the sole species was referred initially), but it differs in its solitary leaf; itsunlobed, ligulate, and spurless lip, which bears 2 depressions at its swollen base; its large rostellum; and its simple, cushionlike stigma. Further analysisof fresh material is required to better resolve generic affinities.1. Porolabium biporosum (Maximowicz) Tang & F. T. Wang,Bull. Fan Mem. Inst. Biol. Bot. 10: 38. 1940.孔 唇 兰 kong chun lanHerminium biporosum Maximowicz, Bull. Acad. Imp. Sci.Saint-Pétersbourg 31: 106. 1887; Monorchis biporosa (Maximowicz)O. Schwarz.Plants 10–12 cm tall. Tubers globose, ca. 1 cm in diam.,fleshy, unlobed. Stem slender, with 2 or 3 tubular sheaths and 1leaf. Leaf linear-lanceolate, ca. 7 × 0.8 cm, base amplexicaul,apex obtuse. Inflorescence 6–8-flowered; floral bracts small.Flowers yellowish green or greenish, small; ovary twisted,fusiform, including pedicel 5–6 mm. Dorsal sepal forming ahood with petals, ca. 2.5 × 1.5 mm, 1-veined; lateral sepals ca. 3× 1.5 mm, 1-veined. Petals ca. 2 × 1 mm, 1-veined; lip spreading,ca. 2.8 × 1.5 mm, base dilated and with 2 concave glands,attenuate toward apex. Column short, with 2 lateral appendagesat base of anther; anther cucullate, large, 2-locular; pollinia 2,each attached to a viscidium by a short caudicle; rostellum deltoid,very large, with spreading lateral lobes; stigma cushionlike.Fl. Jul.● Montane grasslands and lakesides; 3000–3300 m. E Qinghai,NE Shanxi.49. DISPERIS Swartz, Kongl. Vetensk. Acad. Nya Handl. 21: 218. 1800.双 袋 兰 属 shuang dai lan shuChen Xinqi ( 陈 心 启 Chen Sing-chi); Stephan W. Gale, Phillip J. CribbHerbs, terrestrial, slender. Tuber ovoid to globose. Stem erect, unbranched, fleshy, glabrous or pubescent, with a few scatteredor clustered leaves. Leaves basal or cauline, lanceolate, ovate, or subcordate, often very small, base amplexicaul, margin entire. Inflorescenceterminal, racemose, 1- to several flowered; floral bracts foliaceous, similar to leaves. Flowers resupinate; ovary twisted.Dorsal sepal connate to or connivent with petals and forming a hood, usually erect, narrow; lateral sepals often connate at base,saccate or spurred near middle. Petals falcate, broader than dorsal sepal; lip narrowly clawed; claw adnate to base of column; bladevariable in shape, often 3-lobed, smooth, verrucose or pubescent. Column short, sessile; anther 2-locular, attached to column by ashort filament; pollinia 2, granular-farinaceous, sectile, attached by slender caudicles to large viscidia, borne at apices of rostellumarms; stigma 2-lobed, confluent or consisting of 2 separate areas, located toward apex of column or dorsally near base of rostellumarms; rostellum with 2 long, twisted arms and flat central lobe. Capsule fusiform.About 75 species: mainly in S and tropical Africa, with a few species extending to tropical and subtropical Asia; one species in China.