双叶卷瓣兰(中国高等植物图鉴)
Bulbophyllum wallichii Rchb. f. in Wall. Ann. Bot. Syst. 6: 259. 1861: Seldenf. in Dansk Bot. Ark. 29 (1): 234. 1973; H. Hara et al., Enum. Flow. Pl. Nepal 1: 34. 1978; Seidenf., l. c. 33 (3): 189, fig. 136. 1979; Averyanov, Iden. Guide Vietnam. Orch.: 284. 1994; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 290. 1995; Z. H. Tsi, S. C. Chen et K. Mori, Wild Orch. China: 95. pl. 149. 1997. ——Cirrhopetalum wallichii Lindl. in Bot. Reg. 25 (Misc.): 72. 1839, et 29: sub. t. 49. 1843 (non 1830). ——C. refractum auct. non Zoll.: Hook. f., Fl. Brit. Ind. 5: 779. 1890, p. p. ; , Banerji et Thapa in J. Bombay Nat. Hist. Soc. 66: 295. 1969; 中国高等植物图鉴 5: 738. 图8305. 1976. ——Bulbophyllum refractoides Seidenf. in Bot. Tidsskr. 65: 342. 1970 (exct. fig. 6).
Tree trunks in forests; 1400-1500 m. S and W Yunnan [Bhutan, NE and NW India, Myanmar, Nepal, Thailand, Vietnam]. | |
Pseudobulbs close, ovoid, ca. 1 cm in diam., with 2 leaves at apex. Leaf deciduous at anthesis, subsessile; blade narrowly oblong, usually ca. 5 × 1 cm, apex acute. | |
Scape from base of leafless pseudobulb, erect, 10-15 cm, sparsely with 2 tubular sheaths; raceme usually nodding, ca. 4 cm, few to many flowered; floral bracts yellowish green, ovate-lanceolate, ca. 4 mm, apex acuminate. Sepals and petals yellowish brown, with dense purple spots, usually turning tangerine; lip purplish black adaxially and pale tangerine abaxially. Dorsal sepal lanceolate, ca. 5 × 1.7 mm, 1-veined, margins irregularly fimbriate, apex long acuminate and hooked; lateral sepals narrowly oblong, 37-40 × 2-2.5 mm, base adnate to column foot, twisted near base, sparsely ciliate, their lower edges connate to each other, apex acute and ± curved. Petals obliquely ovate-triangular, ca. 3 × 1.5 mm, margins irregularly fimbriate-ciliate, 1-veined, apex acuminate and ± hooked; lip reflexed, subligulate, ca. 3.5 mm, fleshy, margins and abaxial surface ± hairy, base attached to end of column foot by a mobile joint, apex obtuse. Column white, ca. 1.5 mm, base with a distinct foot; stelidia narrowly cylindric, ca. 1.5 mm; anther cap purple, subglobose, finely papillate. Fl. Mar-Apr. 2n = 38. | |