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

12. Peristylus elisabethae (Duthie) R. K. Gupta, Fl. Nainital. 351. 1968.

西藏阔蕊兰 xi zang kuo rui lan

Habenaria elisabethae Duthie, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 71: 44. 1902; Herminium elisabethae (Duthie) Tang & F. T. Wang.

Plants slender, 9-36 cm tall. Tubers oblong-ellipsoid, 1.5-2 × 0.5-1.2 cm. Stem with 1 or 2 tubular sheaths at base, 2- or 3-leaved. Leaves basal to somewhat spaced along stem, narrowly elliptic-lanceolate, 4.5-12 × 0.8-2 cm, apex acute or acuminate. Inflorescence 8-32 cm; peduncle cylindric, slender; sterile bracts 1 or 2, occasionally foliaceous, lanceolate, to 40 mm; rachis 3.5-22 cm, subdensely many flowered; floral bracts lanceolate, 5-8 mm, almost as long as ovary, apex acuminate. Flowers horizontal, green to yellowish green; ovary 6-9 mm including pedicel. Dorsal sepal broadly ovate, concave, ca. 2 × 1.8 mm, 1-veined, apex obtuse; lateral sepals weakly spreading, ovate, oblique, ca. 2.2 × 1.5 mm, 1-veined, apex acute. Petals loosely connivent with dorsal sepal and forming a hood, ovate-lanceolate, oblique, 1.5-1.8 × ca. 1.2 mm, 1-veined, apex obtuse; lip slightly deflexed, oblong, ca. 3 × 1 mm, ecallose, base shallowly concave, 3-lobed near middle; lateral lobes triangular to shortly oblong, ca. 1.2 mm, diverging at an acute angle from axis of lip, apex obtuse; mid-lobe oblong, 1.2-1.5 mm, slightly broader than lateral lobes, apex obtuse; spur pendulous, oblong-clavate, ca. 1 mm, apex obtuse or shallowly 2-lobed. Column ca. 1 mm; viscidia ellipsoid. Fl. Jul-Sep. 2n = 42.

Coniferous and broad-leaved mixed forests, glades in forests, flooded meadows, grasslands; 3100-4100 m. C and S Xizang [Bhutan, India, Nepal].


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