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

13. Calanthe alpina J. D. Hooker ex Lindley, Fol. Orchid. 6-7(Calanthe): 4. 1855.

流苏虾脊兰 liu su xia ji lan

Alismorkis alpina (J. D. Hooker ex Lindley) Kuntze; Calanthe buccinifera Rolfe; C. fimbriata Franchet; C. fimbriatomarginata Fukuyama; C. schlechteri H. Hara.

Plants 25-50 cm tall. Rhizome inconspicuous. Pseudobulbs narrowly conic, small, ca. 7 mm in diam. Leaves 3, well developed at anthesis, not deciduous; blade elliptic or obovate-elliptic, 11-26 × 3-6(-9) cm, apex obtuse-rounded and mucronate or acute; petiole-like base sheathing, sometimes forming a pseudostem to ca. 7 cm. Scape 1 or rarely 2, arising from leaf axils, erect, 30-50 cm, sparsely puberulent; rachis 3-12 cm, laxly to densely 3- to more than 10-flowered; floral bracts persistent, narrowly lanceolate, ca. 1.5 cm, glabrous, apex acuminate. Flowers pale yellow-green, with pink-purple blotches and striations; pedicel and ovary ca. 20 mm, sparsely puberulent. Dorsal sepal subelliptic, 15-20 × 5-6 mm, 5-veined, apex aristate; lateral sepals ovate-lanceolate, 15-20 × 6-7 mm, 5-veined, apex aristate. Petals narrowly oblong to ovate-lanceolate, 12-13 × 4-4.5 mm, 3-veined, apex acute to acuminate; lip basally adnate to base of column wings, pale greenish white, basal half yellow, apical half with purplish red striations, suborbicular-flabellate, ca. 8 × 15 mm, base broadly truncate, unlobed, apical margin fimbriate, apex emarginate; spur straight, yellow or pale violet, cylindric, 15-35 × 3-5 mm, apex obtuse. Column white, ca. 8 mm, dilated at apex, glabrous; rostellum 2-lobed; lobes ca. 1 mm; pollinia obovoid, ca. 1.3 mm, with short caudicles; viscidium suboblong, small. Capsule obovoid-elliptic, ca. 2 × 1.5 cm. Fl. Nov. 2n = 40, 42.

Forests, grassy slopes; 1500-3500 m. S Gansu, Shaanxi, Sichuan, Taiwan, S and SE Xizang, W Yunnan [Bhutan, NE India, Japan, Nepal].


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