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

1. Diglyphosa latifolia Blume, Bijdr. 336. 1825.

密花兰 mi hua lan

Chrysoglossum latifolium (Blume) Bentham & J. D. Hooker; C. macrophyllum King & Pantling; Diglyphis latifolia (Blume) Miquel; Diglyphosa macrophylla (King & Pantling) King & Pantling.

Plants 25-40 cm tall. Rhizome fleshy. Pseudobulb cylindric, somewhat angular in cross section, 9-14 × 0.8-1 cm, with caducous scales. Leaf blade broadly elliptic, plicate, 25-37 × 11-17 cm, veins prominent abaxially, margin undulate, apex acuminate or acute; petiole-like stalk 10-20 cm. Inflorescence deep purple, 22-40 cm, with 3 or 4 scattered tubular sheaths; rachis 13-20 cm, densely many flowered; floral bracts reflexed, deep purple, narrowly ovate-lanceolate, 6-12 mm, apex acuminate. Flowers fleshy, mostly opening simultaneously, orange-red, spotted with purple, omitting an unpleasant smell; pedicel and ovary 10-14 mm, slender. Dorsal sepal narrowly oblong-ovate, 10-13 × 2.5-3.5 mm, 3-veined, apex acuminate; lateral sepals oblong-ovate, falcate, 7-11 × ca. 3 mm, 3-veined, base adnate to column foot and forming an inconspicuous mentum, apex acuminate. Petals similar to lateral sepals, 9-13 × 3-5 mm, base adnate to column foot; lip mobile, oblong-obovate, ca. 5 × 3 mm, fleshy, slightly constricted near middle, concave below constriction and reflexed above, apex acute; disk with 2 fleshy lamellae extending from base of lip almost to apex, converging into a single ridge toward base and apex. Column ca. 5 mm; column foot ca. 2 mm; rostellum subsquare, thick. Fl. Jun.

Damp places in forests, along valleys; ca. 1200 m. SE Yunnan [NE India, Indonesia, Malaysia, New Guinea, Philippines].


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