单花曲唇兰（植物分类学报）
Panisea uniflora (Lindl.) Lindl., Fol. Orch. Panisea 2. 1854; Pfitz. et Kraenzl. in Engler’s Pflanzenreich IV (50) Heft 32 139. 1907; Seidenf. in Opera Bot. 89 88. fig. 47. 1986 et 114 106. 1992; Lund in Nord. J. Bot. 7 (5) 529. fig. 19. 1987; Averyanov, Iden. Guide Vietnam. Orch. 123. 1994; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3) 295. 1995.
Epiphytic on trees or lithophytic on rocks in forests; 800-2400 m. S Yunnan [Bhutan, Cambodia, NE India, Laos, Myanmar, Nepal, Thailand, Vietnam].Type specimens from Nepal. |
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Rhizome 3-4 mm in diam., rigid, densely covered with brown sheaths. Pseudobulbs tufted, borne 5-15 mm apart, often ± appressed to rhizome, narrowly ovoid to flask-shaped, 1.5-4 cm × 7-13 mm, base contracted, apex 2-leaved. | |
Leaf blade linear-oblong, (5.5-)10-21.5 × 0.8-1.2 cm, acuminate; petiole 1-2 cm. |
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Inflorescence proteranthous or heteranthous, erect, 1-flowered; peduncle 2-4 cm, lower part enclosed in sheaths; floral bracts ovate, 4-6 mm, scarious. Flowers pale apricot to yellowish, lip with 3-7 orange spots on lateral lobes; pedicel and ovary 1.1-1.3 cm. Sepals narrowly ovate-oblong, 19-22 × 5.5-6.5 mm, 5-veined, acuminate or acute. Petals oblong-elliptic or narrowly elliptic, 17-20 × ca. 7 mm, 5-veined, obtuse; lip obovate-elliptic, 1.8-2.2 × 1-1.2 cm, base contracted and shortly clawed, rounded, lower sides with 2 very small lateral lobes; lateral lobes oblong-lanceolate, sometimes slightly falcate, ca. 3 × 1 mm, weakly saccate at base; disk with 2 or 3 obscure keels. Column curved, 8-10 mm, broadly winged; foot ca. 2 mm. Capsule obovoid to ellipsoid, 1.7-2.2 × 1-1.2 cm. Fl. Oct-Mar. |
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