浅裂沼兰（横断山区维管植物）
Malaxis acuminata D. Don, Prodr. Fl. Nepal. 29. 1825; Benerji et Thapa in J. Bomb. Nat. Hist. Soc. 68: 72. 1971; Seidenf. in Dansk Bot. Ark. 33 (1): 55. fig. 43 (a, b, e, g). 1978, et in Opera Bot. 114: 147. 1992; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 294. 1995. ——Microstylis wallichii Lindl., Gen. Sp. Orch. Pl. 20. 1830. ——Microstylis biloba Lindl., l. c. ——Microstylis pierrei Finet in Bull. Soc. Bot. France 54: 535. t. 12. 1907. ——Malaxis biloba (Lindl.) Ames, Orch. 2: 112. 1908; C. S. Leou in Quart. J. Exp. For. Nat. Taiwan Univ. 11 (2): 74. fig. 1. 1997. ——Microstylis trigonocardia Schltr. in Fedde Repert. Sp. Nov. Beih. 4: 62, 193. 1919. ——Microstylis siamensis Rolfe ex Downie in Kew Bull. 368. 1925. ——Malaxis pierrei (Finet) T. Tang et F. T. Wang in Acta Phytotax. 1 (1): 74. 1951. ——Malaxis siamensis (Rolfe ex Downie) Seidenf. et Smitin., Orch. Thail. 2 (1): 150. 1954. ——Malaxis allanii S. Y. Hu et Barretto in Chung Chi J. 13 (2): 18. fig. 9. 1976.
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].Type specimens from Nepal. |
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Plants terrestrial, sometimes epiphytic. Stem cylindric, (1.5-)4-7 cm, 4-6 mm in diam., fleshy, with several nodes, mostly enclosed in sheath. |
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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. |
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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. |
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