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FOC | Family List | FOC Vol. 25 | Orchidaceae | Bulbophyllum

97. Bulbophyllum wallichii (Lindley) H. G. Reichenbach, Ann. Bot. Syst. 6: 259. 1861.

双叶卷瓣兰 shuang ye juan ban lan

Cirrhopetalum wallichii Lindley, Gen. Sp. Orchid. Pl. 59. 1830; Bulbophyllum refractoides Seidenfaden; Phyllorkis wallichii (Lindley) Kuntze; Tripudianthes wallichii (Lindley) Szlachetko & Kras.

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.

Tree trunks in forests; 1400-1500 m. S and W Yunnan [Bhutan, NE and NW India, Myanmar, Nepal, Thailand, Vietnam].


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