显脉鸢尾兰（植物分类学报）
Oberonia acaulis Griff. Notul. Pl. Asiat. 3: 275. t. 286 (fig. 1). 1851; Seldenf. in Dansk Bot. Ark. 33 (1): 20. fig. 11. 1978, et in Opera Bot. 114: 154. fig. 96. 1992; Averyanov, Iden. Guide Vietnam. Orch. 159. 1994; Z. H. Tsi et S. C. Chen in Acta Phytotax. Sin. 33 (3): 294. 1995. ——Oberonia myriantha auct. non Lindl.: Seidenf. in Dansk Bot. Ark. 25 (3): 56. fig. 34. 1968.
Epiphytic on trees in forests or along forest margins; 1000-2400 m. SE Xizang, S and SE Yunnan [Bhutan, India, Myanmar, Nepal, Thailand, Vietnam]. |
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Stem rather short or inconspicuous. Leaves subbasal, 3 or 4, distichous-equitant, laterally compressed, ensiform, subfalcate, 4.5-17 × 0.7-1 cm, slightly thickened, veins conspicuous, base articulate, apex long acuminate. |
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Peduncle subterete, 21-23 cm, nearly wingless, with a few very small sterile bracts or sometimes with a greenish foliaceous bract; rachis 14-17.5 cm, ca. 5 mm in diam., densely many flowered; floral bracts lanceolate, 1.5-2 mm, margin irregularly sharply toothed, apex long acuminate. Flowers greenish to yellowish white; pedicel and ovary 1-2 mm. Dorsal sepal ovate-elliptic, 0.8-1 × 0.5-0.6 mm, apex obtuse; lateral sepals broadly ovate, 0.8-1 × 0.6-0.7 mm. Petals oblong, 0.8-1 × ca. 0.5 mm, apex rounded; lip suboblong-ovate in outline, ca. 2 mm, 3-lobed; lateral lobes nearly subovate, margin erose, irregularly incised, or entire; mid-lobe bilobed at apex; lobules parallel to each other, oblong, broadly oblong, or ovate-lanceolate, 0.5-0.7 × 0.3-0.4 mm, apex obtuse, subtruncate, or acuminate. Column very short. Capsule subellipsoid, ca. 3 × 2 mm; fruiting pedicel ca. 0.5 mm. 2n = 30.
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