钗子股（中国高等植物图鉴）
Luisia morsei Rolfe in J. Linn. Soc. Bot. 36: 33. 1903; Schltr. in Fedde Ropert. Sp. Nov. Beih. 4: 280. 1919; Merr. et Metc. in Lingn. Sci. J. 21: 12. 1945; Seidenf. in Dansk Bot. Ark. 27 (4): 45, fig. 21. 1971; S. Y. Hu in Quart. J. Taiwan Mus. 27 (3, 4): 431. 1974; 中国高等植物图鉴 5: 751. 图8331. 1976; 海南植物志4: 252. 1977; Seidenf. in Opera Bot. 95: 281, fig. 182. 1988; Averyanov, Vasc. Pl. Syn. Vietnam. Fl. 1: 118. 1990; Seidenf., l. c. 114: 438, fig. 298. 1992; Averyanov, Iden. Guide Vietnam. Orch.: 335. 1994; 中国兰花全书: 63. 1998.
Hainan ( Sanya City, Lingshui, Baoting, Changjiang, Baisha, Danxian, Qionghai, etc. ), southwestern Guangxi ( Longzhou ), southern Yunnan ( Yuanjiang, Shiping ), southwestern Guizhou ( Anlong ).Epiphytic on tree trunks in forests; 300-1200 m. SW Guangxi, SW Guizhou, Hainan, S Yunnan [Laos, Thailand, Vietnam].Type specimens were collected from Guangxi.
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Stems ascending, to 30 cm, 4-5 mm in diam., rigid, with many distichous leaves. |
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Leaves : succulent, obliquely erect or slightly arcuate, cylindrical, 9-13 cm long, ca. 3 mm thick, apex obtuse, base with 1 joint and enlarged sheath ; sheath thick leathery, clasping, persistent, ca. 1 cm long. |
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Inflorescences 1-3, 5-10 mm, usually 4-6-flowered; floral bracts broadly ovate-triangular, ca. 4 mm, fleshy. Flowers small, opening widely, sepals and petals yellowish green, tinged with purplish brown abaxially and purplish or purplish brown on lip, column purple, anther cap yellow; pedicel and ovary ca. 1 cm, yellowish green. Dorsal sepal elliptic, ca. 5.5 × 3.5 mm, slightly concave, obtuse; lateral sepals obliquely ovate, ca. 7 × 3.5 mm, dorsally carinate-winged toward apex and then becoming a tooth protruding from apex, apex obtuse. Petals subovate, ca. 5 × 3 mm, obtuse; lip 8-9 mm, with a distinct boundary between epichile and hypochile; hypochile embracing column, broader than epichile, slightly concave; epichile nearly reniform-triangular, abaxially with a conic wart, margin ± erose, apex emarginate. Column ca. 3 mm. Fl. Apr-May.
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