圆叶石豆兰（中国高等植物图鉴）
狭萼豆兰（中山自然科学大辞典）
小石豆兰（台湾兰科植物彩色图鉴）
狭萼石豆兰（植物分类学报）
Bulbophyllum drymoglossum Maxim. ex Okubo in Bot. Mag. Tokyo 1: 14. 1884; Schltr. in Fedde Repert. Sp. Nov. Beih. 4: 248. 1919; 中国高等植物图鉴 5: 728. 图8285. 1976; 台湾兰科植物 1: 40-41 (图). 1975; 台湾兰科植物彩色图鉴 1: 405. 1990; Ohwi, New Fl. Jap. (Rev.): 515. 1992; 台湾兰科植物彩色图志 1: 114, 119. 彩色图版 20. 1996. ——B. somai Hayata, Icon. Pl. Formos. 9: 109.1920; Masamune in J. Ceobot. 19 (1, 2): t. 1. 1971; 台湾植物志 5: 901. 1978; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 290. 1995.
Tree trunks in forests; 300-2400 m. N Guangdong, E Guangxi, Taiwan, SE and SW Yunnan [Japan, Korea]. |
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Rhizome creeping, slender, 0.5-1 mm in diam., noded, with internodes 1-2 cm, each node bearing 1 leaf and 1-3 roots. Pseudobulb absent. |
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Leaf subsessile; blade subelliptic or orbicular, 5-30 × 5-10 mm, fleshy-thickened, apex obtuse. |
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Scape arising from base of petiole, erect, 7-40 mm; peduncle slender, ca. 0.3 mm in diam., with 2 or 3 sheaths, terminating in a solitary flower; floral bracts ovate, 1.3-3 mm, membranous, apex acute. Pedicel and ovary 2-5 mm. Flowers pale yellow, with purplish brown stripes on sepals and petals and usually heavily tinged with purplish brown on lip. Sepals free, similar, ovate-lanceolate, 6-16 × 2-4 mm, apex long acuminate; lateral sepals slightly larger. Petals oblong, subelliptic, or linear, 1.5-4 × 1-2 mm, entire, obtuse; lip recurved, ovate-elliptic, 1.5-5 × 0.3-3 mm, 3-veined, base attached to end of column foot by an immobile joint, basal margins ± undulate, apex obtuse. Column 1-2 mm, stout; foot purplish brown, 1.3-4 mm, with free part 0.8-1.8 mm; stelidia deltoid, inconspicuous; anther cap glabrous. Fl. May. 2n = 40. |
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