ORCHIDACEAE - China

EPIDENDROIDEAE 311Calanthe gougahensis Guillaumin, Bull. Mus. Natl. Hist.Nat., sér. 2, 26: 537. 1954; Acanthephippium odoratum Averyanov;A. thailandicum Seidenfaden.Plants to 50 cm tall. Roots short. Pseudobulb ovoid-cylindric,5–7 × ca. 1 cm, 4-noded, with several large membranoussheaths, 2–4-leaved. Leaves broadly obovate-elliptic, 22–24 ×ca. 7 cm, 3-veined, apex acuminate or acute; petiole-like base2–10 cm, sheathing. Inflorescence 10–15 cm, fleshy, with severalscalelike sheaths at base; rachis densely 2–5-flowered;floral bracts oblong-lanceolate, 2.5–3 cm, apex acuminate.Flowers creamy white with faint red striations on outer surface,campanulate-tubular, ca. 30 mm; pedicel and ovary 13–15 mm.Sepals connate at base and connivent above, forming an urceolatetube with apices free; dorsal sepal broadly elliptic-oblong,18–20 × 8–9 mm, 3–5-veined, apex obtuse; lateral sepals ovate,oblique, 18–20 × 12–13 mm, 5-veined, base adnate to columnfoot, apex subobtuse. Petals narrowly ovate-oblong, ca. 20 × 7mm, fleshy, 5-veined, apex subacuminate; lip adnate to apex ofcolumn foot, creamy white, ca. 10 mm, fleshy, 3-lobed; laterallobes erect, creamy white with brownish purple markings,hatchet-shaped, 5–8 mm, margins slightly incurved; mid-lobeyellow, rhombic-triangular, 5–8 × 4–7 mm, apex acute, recurved;disk papillose, fleshy between 2 lateral lobes, with 3low, rounded ridges; mentum formed by bases of lateral sepalsand column foot, saccate, apex obtuse-rounded. Column white,ca. 13 mm; column foot 18–20 mm, inflexed at its mid-pointthrough an angle of 60°, adnate to base of lateral sepals for ca.1/2 of its length, slightly recurved toward apex; anther ca. 4mm; larger pollinia ca. 1.5 mm, smaller pollinia ca. 0.8 mm;rostellum truncate with an apiculate tip; stigma broadly obovoid.Fl. Apr–May.Forests; ca. 300 m. Guangdong [Thailand, S Vietnam].The name Acanthephippium sinense (a synonym of A. striatum)has been misapplied to material of this species by some authors.103. ANTHOGONIUM Wallich ex Lindley, Gen. Sp. Orchid. Pl. 425. 1840.筒 瓣 兰 属 tong ban lan shuChen Xinqi ( 陈 心 启 Chen Sing-chi); Jeffrey J. WoodHerbs, terrestrial or occasionally lithophytic. Stems mostly buried in soil, globose corms or elongate, small canes, of manynodes, decaying within several months after new corms produced. Leaves 2 or 3, rarely to 5, deciduous, linear-lanceolate, plicate,sheathing. Inflorescences several, emerging above leaves; rachis whitish or tan to pale green, branched or unbranched, with severaltightly appressed brownish bracts; floral bracts loosely appressed, pinkish fading to brown. Flowers numerous, not resupinate, basallygibbous, perianth reflexed downward, pink to nearly white; ovary suberect. Sepals spreading, oblanceolate, basally connateforming a tube, apically free. Petals spreading or strongly reflexed, elongate, spatulate, obtuse, connate basally, free apically; lip basallyadnate to column, apically expanded and 3-lobed, with longitudinal red to purple lines and spots. Column whitish to pink, apexdilated and abruptly incurved, lacking wings and a foot; anther cap pale yellow, 2-locular; pollinia 4, soft, without caudicle and viscidium.Capsule fusiform.One species: Bangladesh, Bhutan, Cambodia, China, N India, Laos, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam.1. Anthogonium gracile Lindley, Gen. Sp. Orchid. Pl. 426.1840.筒 瓣 兰 tong ban lanAnthogonium corydaloides Schlechter; A. griffithii H. G.Reichenbach.Plants to 55 cm tall. Pseudobulbs usually partly buried insoil, 1–2 cm in diam., with 2 or 3 nodes, with 2–5 leaves.Leaf blade narrowly elliptic or narrowly lanceolate, 7–45 × 1–2(–3.5) cm, papery, base petiolate, apex acuminate; petioles andsheaths forming a slender pseudostem 3–22 cm. Inflorescenceerect; peduncle slender, glabrous, with several tubular sheaths;rachis 4–10(–25) cm, laxly 4–8-flowered; floral bracts ovatelanceolate,small, ca. 4 mm, apex acute. Flowers often slightlynodding, lip rose-pink or white and tinged with red; pediceland ovary 1.5–2 cm. Sepals connate in basal half forming atube 7–8 mm, with apical half free; dorsal sepal oblong-lanceolate,ca. 16 × 2 mm, apex obtuse; lateral sepals falcate-spatulate,ca. 16 × 4.5 mm, apex acute. Petals narrowly oblong-spatulate,ca. 16 × 2 mm, apex obtuse; lip ca. 1.6 cm, cuneateclawedat base, apical part 3-lobed; lateral lobes ovate-triangular,apex obtuse; mid-lobe subovate, nearly as large as laterallobes, apex obtuse. Column ca. 1.6 cm. Fl. Jul–Nov. 2n = 38,40, 42, 54.Grassy slopes or thickets; 1200–2300 m. W Guangxi, SWGuizhou, SE Xizang, W to SE Yunnan [Bangladesh, Bhutan, Cambodia,N India, Laos, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam].Collabiopsis S. S. Ying.104. COLLABIUM Blume, Bijdr. 357. 1825.吻 兰 属 wen lan shuChen Xinqi ( 陈 心 启 Chen Sing-chi); Jeffrey J. WoodHerbs, terrestrial, rarely epiphytic, glabrous except for minute hairs on bracts. Rhizome creeping, scales tubular, soon caducous,rarely persistent; roots filiform, not branching, villous. Pseudobulbs alternating, 1–6 with a leaf and 1 with an inflorescence, articulateat junction with petiole or scape, scales 1 per pseudobulb, tubular, generally soon caducous. Leaf 1 per pseudobulb, convolute,