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

8. Ponerorchis omeishanica (Tang, F. T. Wang & K. Y. Lang) S. C. Chen, P. J. Cribb & S. W. Gale, Fl. China. 25: 96. 2009.

峨眉小红门兰 e mei xiao hong men lan

Basionym: Orchis omeishanica Tang, F. T. Wang & K. Y. Lang, Acta Phytotax. Sin. 18: 416. 1980.

Plants 14-22 cm tall. Tubers ovoid, 8-12 mm. Stem 8-12 cm, with 1 or 2 tubular sheaths at base, 1- or 2-leaved above middle. Leaves cauline, alternate, widely spaced, green, lacking purple spots, narrowly oblong, oblong, or elliptic, 4.5-5 × 1.2-2.8 cm, glabrous, apex acute or shortly acuminate. Inflorescence erect, ca. 6.5 cm, with 1 foliaceous, ovate sterile bract, glabrous; rachis 2.5-3 cm, subdensely 4-8-flowered; floral bracts ovate-lanceolate, to 20 mm, basal ones conspicuously exceeding flowers, apex acuminate. Flowers pale yellowish green, small to medium-sized; ovary and pedicel fusiform, 10-14 mm, glabrous. Sepals similar, ovate-lanceolate, 6-7 × 2-2.8 mm, 3-veined, apex shortly aristate; dorsal sepal erect; lateral sepals spreading, oblique. Petals spreading, not forming a hood with dorsal sepal, narrowly ovate-lanceolate, 4.5-5 × ca. 1.8 mm, slightly shorter than sepals, margin ciliate; lip spreading, suborbicular, 5-6 × 6-7 mm, disk papillose, margin ciliate, base contracted, spurred, 3-lobed toward apex; lateral lobes triangular or rectangular, ca. 2 mm, apex obtuse, truncate; mid-lobe triangular or oblong, ca. 2 mm, apex shortly apiculate; spur pendulous, cylindric, shorter than ovary, ca. 7 mm, apex obtuse. Fl. Jul-Aug.

● Rocky places along streams, grasslands at forest margins; ca. 2800 m. SC Sichuan (Emei Shan).


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