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

13. Gastrochilus rantabunensis C. Chow ex T. P. Lin, Native Orchids Taiwan. 3: 109. 1987.

合欢盆距兰 he huan pen ju lan

Stems erect, very short. Leaves nearly tufted, basal; blade obovate-oblong, 2-2.5 × 0.4-0.7 cm, apex acute and unequally 2-lobed. Inflorescence subumbellate, 3- or 4-flowered; peduncle ca. 2 cm, upper part enlarged, base with 1 or 2 sheaths; floral bracts ovate-triangular, 3-4 mm, apex acute; pedicel and ovary green with purplish red spots, ca. 9 mm. Sepals and petals green to yellowish with red spots; lip white with a green cushion on epichile. Dorsal sepal obovate, ca. 3.8 × 3 mm, apex rounded; lateral sepals obliquely ovate-triangular, 3-4 × ca. 2.5 mm, apex obtuse. Petals suborbicular, 3-3.5 × 2.5-3 mm, margin fimbriate, apex rounded; lip with an epichile and a saccate hypochile; epichile subreniform, 2-3 × 5-6.5 mm, adaxially densely white hairy except on central cushion, apex retuse; hypochile subconic, slightly laterally compressed, ca. 3.5 cm tall, ca. 4 mm in diam., apex rounded and slightly concave. Column short. Fl. Jan-Feb or Jul.

● On tree trunks in coniferous forests; ca. 2000 m. S Hunan, C Taiwan.

S. S. Ying (Quart. J. Chin. Forest. 21: 115. 1988) recorded material of this species from Taiwan as Gastrochilus bellinus.


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