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

46. Habenaria iyoensis Ohwi, J. Jap. Bot. 12: 382. 1936.

岩坡玉凤花 yan po yu feng hua

Habenaria minor Fukuyama & Masamune; H. rupestris T. P. Lin & T. W. Hu.

Plants 15-40 cm tall. Tubers oblong, 2-4 × 1-1.5 cm, fleshy. Stem erect, terete, with 5-7 tufted leaves at base and 2 bractlike leaves above. Leaf blade narrowly elliptic or broadly oblanceolate, 8-10 × 1.8-2 cm, base contracted into amplexicaul sheath, apex acute. Raceme densely many flowered, 8-10 cm; floral bracts ovate-lanceolate, 8-12 × ca. 3 mm, basal ones nearly as long as ovary; ovary twisted, cylindric-fusiform, including pedicel 8-12 mm. Flowers greenish. Dorsal sepal forming a hood with petals, erect, broadly ovate, concave, 5-6 × 3.8-4 mm, 3-veined, apex obtuse; lateral sepals reflexed, obliquely ovate, 5-6 × 2.2-3 mm, 3-veined, apex acute. Petals narrowly falcate-lanceolate, 5-6 × ca. 2 mm, 1-veined, apex obtuse; lip spurred, deeply 3-lobed above base; lateral lobes spreading, almost at right angles to mid-lobe, filiform, 7-15 mm; mid-lobe linear, 7-9 mm, apex obtuse; spur pendulous, slightly curved, cylindric, 11-20 mm, longer than ovary, apex obtuse; connective rather broad; stigmas oblong. Fl. Sep-Oct. 2n = 42.

Rocky slopes, sparse forests; below 700 m. C and S Taiwan [S Japan].


 

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