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

32. Dendrobium fanjingshanense Z. H. Tsi ex X. H. Jin & Y. W. Zhang, Acta Phytotax. Sin. 39: 269. 2001.

梵净山石斛 fan jing shan shi hu

Stems clustered, cylindric, 35-60 cm, slender, 2-5 mm in diam., internodes green or pale yellowish green with white membranous leaf sheaths, grooved and angular. Leaf blade linear or linear-lanceolate, 6-8 × 0.9-1.2 cm, leathery or thinly leathery, base narrowed into amplexicaul sheath, apex obtuse or obliquely retuse; leaf sheath with raised veins. Inflorescence lateral on previous year’s leafless stem, ascending, to 6 cm, 1- or 2(or 3)-flowered; peduncle 2.5-3 cm; basal sheaths 3 or 4, cupular or tubular, pale purplish, 4-15 mm, thickly papery, with raised veins; floral bracts pale purplish, cymbiform, 15-20 × ca. 5 mm, thickly papery, obtuse. Pedicel and ovary 1-2.5 cm. Flowers scented, spreading, golden yellow; base of lip purple striate, disk sometimes golden yellow spotted, anther cap white. Dorsal sepal oblong or oblong-elliptic, 24-26 × 10-11 mm, 6- or 7-veined, obtuse; lateral sepals shorter and narrower, 6- or 7-veined, base slightly oblique, apex obtuse; mentum conic, 3-4 mm. Petals broadly elliptic or ovate, 14-22 × 11-17 mm, 3-veined, lateral major veins branched, apex rounded; lip broadly ovate, 17-21 × 21-22 mm, adaxially densely tomentose, with claw 3-4 mm, margin irregularly denticulate. Column 4-5 mm, foot ca. 3 mm; anther cap conic, front margin toothed.

● Epiphytic on tree trunks; 800-1500 m. Guizhou.


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