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

11. Zeuxine flava (Wallich ex Lindley) Trimen, J. Ceylon Branch Roy. Asiat. Soc. 9: 90. 1885.

黄花线柱兰 huang hua xian zhu lan

Monochilus flavus Wallich ex Lindley, Gen. Sp. Orchid. Pl. 487. 1840; Haplochilus flavus (Wallich ex Lindley) D. Dietrich; Zeuxine aurantiaca Schlechter.

Plants 20-30 cm tall, slender. Stem erect, 3- or 4-leaved. Leaves spaced, often withered and pendulous at anthesis, broadly lanceolate to narrowly ovate, 5-6 × 1.5-2 cm, apex acuminate; petiole-like base including tubular sheath 1-1.2 cm. Inflorescence to 13 cm, with several sterile bracts, pubescent; rachis 4-5 cm, 8-15-flowered; floral bracts lanceolate, ca. 5 mm, hairy abaxially, apex caudate. Flowers resupinate, not fully opening, saffron, small; pedicel and ovary glabrescent, ca. 1.2 cm. Dorsal sepal subovate, concave, ca. 3.5 × 2 mm; lateral sepals oblique, ca. 3 × 1.2 mm. Petals oblong, ca. 2.5 × 1 mm; lip T-shaped, ca. 3 mm, 3-partite; hypochile saccate, inside with 2 hooked calli; mesochile ca. 1 mm, with involute margin; epichile transversely oblong, ca. 1 × 4.5 mm, with 2 lobes diverging at nearly right angles to axis of lip. Column ca. 2 mm. Fl. May.

Open forests in limestone areas; ca. 1400 m. SE Yunnan [Bhutan, N India, Malaysia, Myanmar, Nepal, Thailand, Vietnam].


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