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

29. Calanthe yuana Tang & F. T. Wang, Bull. Fan Mem. Inst. Biol. Bot. 7: 7. 1936.

峨边虾脊兰 e bian xia ji lan

Plants to 70 cm tall, without distinct rhizome. Pseudobulbs conic, small, ca. 1 cm in diam., with 3 sheaths. Leaves 4, well developed and spreading at anthesis, not deciduous; blade elliptic, 18-21 × 4-6.5 cm, abaxially puberulent, apex shortly acuminate; petiole-like base sheathing, 7-10 cm, usually forming a pseudostem ca. 10 cm. Scape arising from leaf axil, erect, densely puberulent; rachis ca. 29 cm, laxly 14-flowered; floral bracts persistent, lanceolate, 4-6.5 mm, glabrous, apex acuminate. Flowers yellowish, with a white lip; pedicel and ovary 16-20 mm, densely puberulent. Dorsal sepal elliptic, ca. 15 × 7 mm, glabrous, 5-veined, apex acute; lateral sepals oblong-elliptic, ca. 17 × 5 mm, glabrous, 5-veined, apex mucronate. Petals ligulate, oblique, ca. 15 × 5.5 mm, 3-veined, apex obtuse and slightly mucronate; lip adnate to entire length of column wings at base, orbicular-rhombic, ca. 18 × 8 mm, 3-lobed; lateral lobes falcate-oblong, ca. 6 × 4.5 mm, apex obtuse; mid-lobe obovate, ca. 8.5 × 8 mm, base cuneate, apex rounded and emarginate; disk without lamellae or other appendages; spur straight or slightly arcuate, cylindric, ca. 8 mm, glabrous, apex obtuse. Column ca. 6 mm, dilated at apex, glabrous; rostellum 2-lobed; lobes ca. 1.2 mm; pollinia obovoid, equal in size, ca. 2 mm; viscidium suboblong, small. Fl. May.

● Evergreen broad-leaved forests; ca. 1800 m. W Hubei, SW Sichuan.


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