ORCHIDACEAE - China

286EPIDENDROIDEAEveined, apex obtuse; lateral sepals falcate-oblong, 14–18 × 4–5mm, 5-veined, apex acute; mentum 2–3 mm. Petals narrowlyoblong or linear, 14–18 × 1.2–1.4 mm, 3-veined, apex obtuse;lip attached to column foot, broadly ovate, 6–9 × 3–5 mm,entire, strongly recurved, strongly veined, apex sagittate with 2small side projections. Column 3–5 mm, broadly winged; footca. 5 mm. Fl. Oct–Nov.Epiphytic on tree trunks at forest margins or in open forests;1400–1700 m. S and SW Yunnan [Bhutan, NE India, Myanmar, Thailand,Vietnam].Chrysoglossella Hatusima.96. HANCOCKIA Rolfe, J. Linn. Soc., Bot. 36: 20. 1903.滇 兰 属 dian lan shuChen Xinqi ( 陈 心 启 Chen Sing-chi); Jeffrey J. WoodHerbs, terrestrial, glabrous. Rhizome slender, creeping; roots unbranched, villous, with root hairs, arising mainly from nodes.Shoot arising from base of terminal or subterminal internode, with a persistent, tubular, acute, membranous scale at each node; sterileshoots with 1 terminal leaf, alternating with fertile ones, terminal internode not swollen or differentiated. Leaf spreading to suberect,plicate-venose, ovate, with a crimped or crenulate margin. Inflorescence terminal, 1-flowered; floral bracts similar to rhizome scales.Flower resupinate, not opening widely; ovary cylindric, glabrous. Sepals and petals entire, free; lateral sepals decurrent on columnfoot. Lip adnate to column foot, 3-lobed, spurred at base; lateral lobes erect; mid-lobe porrect; callus of 2 low, linear ridges. Columnclavate, with a foot; anther cap with 2 4-locular thecae, incumbent, glabrous; pollinia 8, stipe present; stigma subelliptic; rostellumflaplike.One species: SW China, S Japan, Vietnam.1. Hancockia uniflora Rolfe, J. Linn. Soc., Bot. 36: 20. 1903.滇 兰 dian lanChrysoglossella japonica Hatusima; Hancockia japonica(Hatusima) Maekawa.Pseudobulbs loosely arranged on rhizome, borne ca. 2 cmapart from each other, narrowly cylindric, 1–1.5 cm × 1.5–2.5mm. Petiole ca. 5 mm; leaf blade elliptic-ovate or ovate-lanceolate,5–7.5 × 2–3.3 cm, papery, base subrounded, apex acute.Inflorescence ca. 2 cm, base with membranous tubular sheaths,Apaturia Lindley; Pachychilus Blume.97. PACHYSTOMA Blume, Bijdr. 376. 1825.粉 口 兰 属 fen kou lan shuChen Xinqi ( 陈 心 启 Chen Sing-chi); Jeffrey J. Woodterminating in a flower; floral bracts cymbiform, ca. 2 cm.Flower pink; pedicel and ovary 2.5–3 cm. Sepals similar, free,slightly connivent, linear or narrowly oblong, ca. 20 × 3 mm, 3-veined, apex acuminate. Petals similar to sepals, ca. 20 × 3–4mm, 3-veined, apex acuminate; lip elliptic-oblong, ca. 1.7 cm,3-lobed; lateral lobes ovate-triangular; mid-lobe subreniform,apex obtuse; disk with 3 longitudinal ridges; spur ca. 2.2 cm,apex obtuse. Column ca. 1.5 cm. Fl. Jul.Damp places in forests or along valleys; 1300–1600 m. S and SEYunnan [Japan (Ryukyu Islands), N Vietnam].Herbs, terrestrial, with a distinct dormant period. Rhizome cylindric. Pseudobulb fleshy, cylindric or tuberlike with distinct fertileand vegetative shoots. Leaves 1 or 2, erect, linear, plicate-venose, papery, subtended by a few sterile sheaths. Inflorescence axiserect, leafless, with many brown sheaths along length, racemose; floral bracts persistent, suberect, lanceolate. Flowers subnutant,hairy; ovary hairy. Sepals subequal, not widely spreading, pubescent on both surfaces; dorsal sepal free; lateral sepals with obliquebases surrounding saccate lip base to form a blunt mentum. Petals free, linear, narrower than sepals, both surfaces pubescent; lipattached to apex of column foot, fleshy, porrect, 3-lobed in apical half, subgibbous or saccate at base but lacking a spur; diskpapillose; lateral lobes erect; mid-lobe recurved at blunt apex; callus of several papillose or verrucose linear ridges from base to apexof blade. Column clavate, incurved and winged at apex, pubescent; anther cap terminal, pubescent; pollinia 8, clavate, waxy, withoutconspicuous viscidium and stipe; stigma transversely reniform-elliptic or dumbbell-shaped; rostellum obtuse. Capsule oblong,rostrate, ridged.About 20 species: tropical Asia and the Malay Archipelago, N Australia, New Guinea, and New Caledonia; two species (one endemic) in China.1a. Pseudobulbs subcylindric; flowers yellow, tinged with purplish or pink; mid-lobe of lip usually ± ciliate onmargin ........................................................................................................................................................................... 1. P. pubescens1b. Pseudobulbs subglobose or ellipsoid; flowers yellowish; mid-lobe of lip densely long hairy on margin ................. 2. P. ludaoense1. Pachystoma pubescens Blume, Bijdr. 376. 1825.粉 口 兰 fen kou lanApaturia chinensis Lindley; A. senilis Lindley; Pachychiluschinensis (Lindley) Blume; P. pubescens (Blume) Blume;Pachystoma brevilabium Schlechter; P. chinense (Lindley) H.