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

6. Crepidium biauritum (Lindley) Szlachetko, Fragm. Florist. Geobot., suppl. 3: 124. 1995.

二耳沼兰 er er zhao lan

Microstylis biaurita Lindley, Gen. Sp. Orchid. Pl. 20. 1830; Malaxis biaurita (Lindley) Kuntze; M. brevicaulis (Schlechter) S. Y. Hu; M. sutepensis (Rolfe ex Downie) Seidenfaden & Smitinand; Microstylis brevicaulis Schlechter; M. sutepensis Rolfe ex Downie.

Plants terrestrial. Stem cylindric, 2-2.5 cm, fleshy, with several nodes, ± enclosed in membranous sheaths. Leaves usually 3, ovate, oblong-ovate, or subelliptic, 5-10 × 1.8-5 mm, base contracted into a sheathlike, amplexicaul petiole 1.5-3.5 cm, apex acuminate. Inflorescence erect; peduncle 15-21 cm, wingless; rachis 7-9 cm, 20-30-flowered; floral bracts reflexed, narrowly lanceolate, 4.5-6 mm. Flowers purplish red to green, ca. 7 mm in diam.; pedicel and ovary 4-5 mm. Dorsal sepal suboblong or oblong-lanceolate, 6-6.5 × 1.5-2 mm, margin revolute, apex obtuse; lateral sepals narrowly oblong-ovate, ca. 5 × 1.5-2 mm, base oblique, apex obtuse. Petals narrowly linear, ca. 5.5 × 0.3 mm; lip superior, rhombic-elliptic in outline, 4-5.5 × ca. 3 mm, base with a pair of auricles decurrent backward embracing column apex, unlobed, central part with 2 short lamellae, and between lamellae a longitudinal groove; auricles ovate or narrowly ovate, 2-3 mm. Fl. Jun.

Forests; 1300-2500 m. S and W Yunnan [NE India, Laos, Myanmar, Thailand].


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