禾叶兰（中国高等植物图鉴）
Agrostophyllum callosum Rchb. f. in Seem., Fl. Vit. 296. 1868; King et Pantl. in Ann. Bot. Gard. Calcutta 8: 155. pl. 212. 1898; Merrill et Metc. in Lingn. Sci. J. 21: 6. 1945; S. Y. Hu in Quart. J. Taiwan Mus. 25 (1, 2): 43. 1972; 中国高等植物图鉴5: 714. 图8258. 1976; 海南植物志 4: 231. 1977; Seidenf. in Opera Bot. 8: 127. fig. 79. 1986, et 114: 198. 1992; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 288. 1995.
Epiphytic on trees in dense forests; 900-2400 m. NE and SW Hainan, SE Xizang, S Yunnan [Bhutan, NE India, Myanmar, Nepal, Thailand, Vietnam].
G. Seidenfaden ( 1986 ) in the Thai Orchid Study ( Opera Bot. 89 : fig. 79. ) has depicted this species as having long stamen legs, but no obvious stamen legs have been observed from our specimens. |
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Plants 30-60 cm tall or taller. Rhizome creeping, 3-4 mm in diam. Stems borne 1-2 cm apart on rhizome, erect, slender, terete below middle, ± compressed above, unbranched, with many distichous leaves. |
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Leaf blade grasslike, 8-13(-17) × 0.4-0.8 cm, papery, attenuate gradually from base to apex, unequally bilobed, sheathing at base; sheaths tubular, 2-3.5 cm, margin black membranous. |
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Inflorescence terminal, subcapitate, 1-2 cm in diam., densely several to 10-flowered; floral bracts cymbiform, suboblong, 0.5-2 cm. Flowers reddish or white and tinged with purplish red; pedicel very short; ovary 5-6 mm. Dorsal sepal orbicular, ca. 4 mm; lateral sepals broadly ovate-orbicular, ca. 4 × 5 mm, base embracing lip. Petals subrhombic-elliptic, ca. 2.5 × 3 mm, base contracted; lip ± broadly oblong, ca. 3.5 mm, slightly contracted at middle, base shallowly saccate, inside with a callus; callus laterally 2-branched. Column ca. 2 mm. Capsule ellipsoid, ca. 5 × 3.5 mm. Fl. and fr. Jul-Aug. |
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