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

19. Oberonia falconeri J. D. Hooker, Hooker’s Icon. Pl. 18: ad t. 1780. 1888.

短耳鸢尾兰 duan er yuan wei lan

Iridorkis falconeri (J. D. Hooker) Kuntze; Oberonia siamensis Schlechter.

Stem short or somewhat inconspicuous. Leaves subbasal, 3-6, distichous-equitant, laterally compressed, ensiform, usually slightly falcate, 1.5-8(-11) × 0.7-1 cm, thick, veins inconspicuous, base articulate, apex acuminate. Peduncle subterete, 6-18 cm, wingless, lower part with many linear-lanceolate sterile bracts 3-4 mm; rachis 6.5-13 cm, many flowered; floral bracts lanceolate to oblong-lanceolate, thinly membranous, apex aristate, awn ca. 3 mm, apical margin ± erose. Flowers ± whorled, white or green to greenish yellow; pedicel and ovary 1-1.5 mm. Dorsal sepal ovate or oblong-ovate, ca. 1 × 0.7 mm, apex obtuse or acute; lateral sepals similar to dorsal sepal, ca. 1 × 0.6 mm. Petals suboblong, ca. 1 × 0.3-0.4 mm, margin inconspicuously crisped or slightly obtusely incised, apex obtuse; lip oblong in outline, 1-1.2 × ca. 0.7 mm, base with short auricles on either side, apex bilobed and sinus apiculate; lobules suboblong, 0.1-0.2 mm. Column short, stout. Capsule obovoid-ellipsoid, 2-2.5 × ca. 1.5 mm, ± obtusely 3-ridged; fruiting pedicel 0.7-1 mm. Fl. and fr. Aug-Oct. 2n = 30.

Epiphytic on tree trunks in forests or thickets; 700-2500 m. S and SW Yunnan [India, Laos, Malaysia (Peninsular), Nepal, Thailand, Vietnam].


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