隔距兰（植物研究）
Cleisostoma sagittiforme Garay in Bot. Mus. Leafl. Harvard Univ. 23 (4): 174. 1972; Seidenf. in Dansk Bot. Ark. 29 (3): 19, fig. 5. 1975; Z. H. Tsi in Bull. Bot. Res. 3 (4): 23. 1983; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 290. 1995.
Epiphytic on tree trunks in broad-leaved evergreen forests or in open forests along valleys; 900-1600 m. S Yunnan [Bhutan, NE India, Thailand].
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Stems erect, 2-4 cm. |
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Leaves flat, narrowly oblong, 5-18 × 1-2 cm, leathery, obtuse and unequally bilobed. |
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Inflorescence pendulous, longer than leaves, branching, laxly many flowered; peduncle ca. 1.5 mm in diam., with 3 or 4 short sheaths below middle; floral bracts ovate-triangular, small, ca. 1 mm, acute. Flowers purplish red, small; pedicel and ovary ca. 5 mm. Dorsal sepal oblong, cymbiform, ca. 3 × 1.5 mm, obtuse; lateral sepals slightly obliquely ovate, ca. 3 × 1.5 mm, obtuse. Petals ± falcate-oblong, ca. 2.5 × 1.5 mm, obtuse; lip lateral lobes erect, deltoid, acute; mid-lobe sagittate-triangular, apex obtuse, with 2 backward triangular basal lobules on either side, with a longitudinal ridge; spur horn-shaped, ca. 5 mm, apex obtuse, inside longitudinally septate; back wall callus in interior of spur well spaced from septum, 3-lobed; lateral lobules small; mid-lobule laterally compressed, oblong, center slightly concave, base slightly bilobed; anther cap broadly emarginate; stipe ca. 0.8 mm, narrowly cuneate; viscidium suborbicular. Fl. May-Sep.
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fruit; | ||
