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

19. Gastrochilus nanus Z. H. Tsi, J. Arnold Arbor. 71: 121. 1990.

江口盆距兰 jiang kou pen ju lan

Stems creeping, 3-4 cm, ca. 2 mm in diam. Leaves many, closely spaced, distichous; blade deep green, with purplish red spots, elliptic-oblong, 8-10 × 5-6 mm, apex acute. Inflorescence from near apex of stem, subumbellate, 5- or 6-flowered; peduncle suberect, 6-11 mm, upper part enlarged, base with 1 or 2 tubular sheaths; floral bracts green, with purplish red spots, ovate-triangular, 1-1.3 mm; pedicel and ovary ca. 5 mm. Flowers yellowish green. Dorsal sepal elliptic, concave, ca. 2.2 × 1.2 mm, apex obtuse; lateral sepals ± oblique, oblong, ca. as large as dorsal sepal. Petals oblong, smaller than sepals; lip with an epichile and a saccate hypochile; epichile spreading, reniform, ca. 2 × 2.5 mm, margin and adaxial surface densely white hairy, with an olive central cushion, apex subtruncate and emarginate; hypochile straight, nearly parallel to ovary, subcylindric, 2.8-3 mm tall, ca. 1 mm in diam., slightly narrowed at middle, apex rounded. Column ca. 0.5 mm; anther cap narrowed into a beak at apex. Fl. Aug.

● On tree trunks at forest margins; ca. 1000 m. NE Guizhou.


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