异型兰 yi xing lan

Stems inconspicuous, usually leafless at least at anthesis. Inflorescences 1 or 2, pendulous, green and spotted with purple, to 26 cm, unbranched, densely pubescent, sparsely many flowered; floral bracts ovate-lanceolate, 3-4 mm, membranous, abaxially sparsely hairy. Flowers opening widely, yellowish or yellowish greenish, marked with brownish in basal half, column whitish, anther cap whitish or yellow; pedicel and ovary ca. 4 mm, densely pubescent. Sepals elliptic or ovate-elliptic, 5-7 × 4-5 mm, rounded; mentum small but distinct. Petals suboblong, 5-7 × 3.5-4.5 mm, subtruncate; lip 3-lobed; lateral lobes erect, narrowly oblong, ca. 4 mm, rounded; mid-lobe very short, retuse; disk concave or shallowly saccate, with a spongy appendage; appendage pale brown, V-shaped. Column very short, foot ca. 4 mm; anther cap with 2 filiform appendages on both sides. Capsule arcuate, cylindric, ca. 4 cm × 4-5 mm. Fl. Mar-May, fr. Jul.

● Epiphytic on tree trunks at forest margins and in open forests; 700-2000 m. W Sichuan, S and SW Yunnan.