1. Anthogonium gracile Lindley, Gen. Sp. Orchid. Pl. 426. 1840.
筒瓣兰 tong ban lan
Anthogonium corydaloides Schlechter; A. griffithii H. G. Reichenbach.
Plants to 55 cm tall. Pseudobulbs usually partly buried in soil, 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 and sheaths forming a slender pseudostem 3-22 cm. Inflorescence erect; 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 slightly nodding, lip rose-pink or white and tinged with red; pedicel and ovary 1.5-2 cm. Sepals connate in basal half forming a tube 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, cuneate-clawed at base, apical part 3-lobed; lateral lobes ovate-triangular, apex obtuse; mid-lobe subovate, nearly as large as lateral lobes, apex obtuse. Column ca. 1.6 cm. Fl. Jul-Nov. 2n = 38, 40, 42, 54.
Grassy slopes or thickets; 1200-2300 m. W Guangxi, SW Guizhou, SE Xizang, W to SE Yunnan [Bangladesh, Bhutan, Cambodia, N India, Laos, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam].