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FOC | Family List | FOC Vol. 25 | Orchidaceae | Oberonia

25. Oberonia mucronata (D. Don) Ormerod & Seidenfaden in Seidenfaden, Contr. Orchid Fl. Thailand. 13: 20. 1997.

鸢尾兰 yuan wei lan

Stelis mucronata D. Don, Prodr. Fl. Nepal. 32. 1825; Cymbidium iridifolium Roxburgh; Iridorkis iridifolia (Roxburgh) Kuntze; Malaxis denticulata (Wight) H. G. Reichenbach; M. iridifolia (Roxburgh) H. G. Reichenbach; Oberonia brevifolia (J. D. Hooker) Panigrahi; O. denticulata Wight; O. denticulata var. brevifolia (J. D. Hooker) S. Misra; O. denticulata var. iridifolia (Roxburgh) S. Misra; O. iridifolia Lindley var. brevifolia J. D. Hooker; O. smisrae Panigrahi.

Stem short or inconspicuous. Leaves subbasal, 5 or 6, distichous-equitant, laterally compressed, 6-16 cm × 6-15 mm, thick, veins conspicuously visible when dried, base articulate, apex shortly acuminate or obtuse. Peduncle subterete, 20-25 cm, lower part with narrow wings on both sides, including wings to 4 mm wide, with a few very small sterile bracts below; rachis pendulous, to 16 cm, 5-6 mm in diam., densely many flowered; floral bracts nearly elliptic or oblong, 1.2-1.5 mm, margin erose. Flowers reddish brown; pedicel and ovary ca. 1.5 mm. Dorsal sepal ovate or broadly ovate, 1-1.3 × ca. 0.8 mm, apex obtuse; lateral sepals slightly narrower, apex acuminate. Petals ovate-oblong, 0.9-1.1 × ca. 0.6 mm, margin irregularly erose; lip broadly ovate or nearly suborbicular in outline, ca. 1.5 × 1.5 mm, base decurrent backward, inconspicuously 3-lobed, margin irregularly incised or fimbriate, apex bilobed, sinus ca. 0.5 mm deep. Column short. Capsule ellipsoid, ca. 2.5 × 2 mm; fruiting pedicel very short. Fl. and fr. Aug-Dec. 2n = 30, 40.

Epiphytic on trees in forests; 1300-1400 m. S and SW Yunnan [Bangladesh, Bhutan, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Philippines].


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