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

15. Oberonia obcordata Lindley, Fol. Orchid. 8(Oberonia): 7. 1859.

橘红鸢尾兰 ju hong yuan wei lan

Iridorkis obcordata (Lindley) Kuntze; I. orbicularis (J. D. Hooker) Kuntze; I. treutleri (J. D. Hooker) Kuntze; Malaxis obcordata (Lindley) H. G. Reichenbach; Oberonia orbicularis J. D. Hooker; O. treutleri J. D. Hooker.

Stem ca. 1 cm. Leaves 2 or 3, distichous-equitant, laterally compressed, nearly linear, slightly falcate, 3-10 × 0.5-0.8 cm, thick, veins conspicuous when dried, base not articulate, apex acuminate. Peduncle connate in lower part to uppermost leaf, appearing to arise from leaf blade, with 2 whorls of lanceolate sterile bracts ca. 2 mm below; rachis ca. 4 cm, many flowered; floral bracts lanceolate, 2-3 mm, margin slightly erose, apex acuminate-caudate. Flowers reddish orange or red, 1-1.5 mm in diam.; pedicel and ovary 1-1.5 mm. Dorsal sepal ovate, ca. 0.9 × 0.6 mm, apex acute; lateral sepals broadly ovate, ca. 0.9 × 0.8 mm, apex obtuse. Petals oblong-ovate, ca. 0.8 × 0.4 mm, apex shortly acuminate; lip ovate in outline, slightly longer than sepals, 3-lobed; lateral lobes narrowly ovate, ca. 0.4 mm; mid-lobe subobcordate or oblate, ca. 0.5 × 0.8 mm, apex emarginate. Column suberect, short, stout. Fl. Oct. 2n = 30.

Lithophytic on rocks in forests; ca. 1800 m. SE Xizang [NE India, Nepal, Thailand].


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