叉枝牛角兰（中国高等植物图鉴）
Ceratostylis himalaica Hook. f., Fl. Brit. Ind. 5: 826. 1890, et in Hook., Icon. Pl. ser. 4, 2: t. 2101. 1892; 中国高等植物图鉴 5: 713. 图8261. 1976; Seidenf. in Opera Bot. 89: 117. fig. 68. 1986, et 114: 161. 1992; 西藏植物志 5: 672. 图351. 1987; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 290. 1995. ——Rataia himalaica (Hook. f.) King et Pantl. in Ann. Bot. Gard. Calcutta 8: 157. pl. 214. 1898.
Epiphytic on trees or lithophytic on rocks in forests; 900-1700 m. SE Xizang, S Yunnan [Bhutan, NE India, Laos, Malaysia, Myanmar, Nepal, Vietnam].
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Plants epiphytic or lithophytic. Stems clustered, pendulous, (1.5-)2-7 cm, dichotomously branched, completely enclosed in scalelike sheaths; sheaths reddish brown or pale reddish brown, ovate-lanceolate, 5-10 mm, membranous, apex long acuminate. |
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Leaf blade linear or narrowly oblong, 3.5-6.5 × 0.3-0.7 cm, fleshy, obliquely notched, acute; petiole 4-6 cm. |
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Inflorescence arising from leaf base, subcapitate, 1- or 2-flowered; peduncle and pedicel ca. 4 mm, ± pubescent; peduncle with 2 sheaths; floral bracts ovate, 4-5 × 1.5-2 mm, sheathing, acute to acuminate. Flowers small, white spotted with purplish red, column yellow. Dorsal sepal oblong-ovate, 5-6 × 2-3.5 mm, abaxially pubescent; lateral sepals broadly ovate, 3.5-4.5 mm, abaxially pubescent. Petals linear, 3.5-4.5 × ca. 1 mm, glabrous; lip suboblong, cymbiform, 2-3 mm, thickened, base deeply saccate, margin entire, apex with a cushionlike callus abaxially; disk slightly hairy. Column very short, apical arms horn-shaped, foot short. |
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Capsule ellipsoid, 6-7 × 3-4 mm. Fl. and fr. Apr-Jun. | ||
