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

13. Crepidium acuminatum (D. Don) Szlachetko, Fragm. Florist. Geobot., suppl. 3: 123. 1995.

浅裂沼兰 qian lie zhao lan

Malaxis acuminata D. Don, Prodr. Fl. Nepal. 29. 1825; Crepidium bilobum (Lindley) Szlachetko; M. acuminata f. biloba (Lindley) Tuyama; M. acuminata var. biloba (Lindley) Ames; M. allanii S. Y. Hu & Barretto; M. biloba (Lindley) Ames; M. pierrei (Finet) Tang & F. T. Wang; M. siamensis (Rolfe ex Downie) Seidenfaden & Smitinand; M. wallichii (Lindley) Deb; Microstylis biloba Lindley; M. pierrei Finet; M. siamensis Rolfe ex Downie; M. trigonocardia Schlechter; M. wallichii Lindley.

Plants terrestrial, sometimes epiphytic. Stem cylindric, (1.5-)4-7 cm, 4-6 mm in diam., fleshy, with several nodes, mostly enclosed in sheath. Leaves 3-5, obliquely ovate, ovate-oblong, or subelliptic, (4-)6-12 × 2.5-6 cm, base contracted into a sheathlike, amplexicaul petiole 2-4 cm, apex acuminate. Inflorescence erect; peduncle 12-43 cm, wingless; rachis 3-9(-16) cm, 10- or more flowered; floral bracts lanceolate, 3-4(-6) mm. Flowers purplish red, ca. 1.5 cm in diam.; pedicel and ovary 7-10 mm. Dorsal sepal narrowly oblong or broadly linear, 8-9 × ca. 2 mm, 3-veined, margin revolute, apex obtuse; lateral sepals oblong, 6-7 × 3-3.5 mm, margin revolute, apex obtuse. Petals narrowly linear, 8-9 × ca. 0.8 mm, margin revolute; lip superior, ovate-oblong or obovate-oblong in outline, 10-11 × 6-7 mm, shallowly 2-lobed, with a sinus 1(-2) mm deep, with a pair of auricles decurrent backward embracing column, adaxially with a central groove in apical half; auricles ± narrowly ovate, 1/5-2/5 length of lip. Column 1-1.5 mm, stout. Capsule obovoid-oblong, ca. 1.8 × 1 cm; fruiting pedicel ca. 7 mm. Fl. and fr. May-Jul. 2n = 30, 36, 42.

Forests, shaded rocks along valleys; 300-2100 m. Guangdong, SW Guizhou, ?Taiwan, SE Xizang, S Yunnan [Bhutan, Cambodia, India, Indonesia, Laos, Myanmar, Nepal, Philippines, Thailand, Vietnam; Australia].


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