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

23. Calanthe odora Griffith, Not. Pl. Asiat. 3: 365. 1851.

香花虾脊兰 xiang hua xia ji lan

Alismorkis angusta (Lindley) Kuntze; A. odora (Griffith) Kuntze; Calanthe angusta Lindley; C. angusta var. laeta Handel-Mazzetti; C. shweliensis W. W. Smith.

Plants 25-50 cm tall. Pseudobulbs subconic, ca. 5 mm in diam., with 2 or 3 sheaths. Leaves 2 or 3, not well developed at anthesis, not deciduous; blade elliptic or elliptic-lanceolate, (9-)12-14(-22) × (2.5-)3-4(-5) cm, apex acuminate; petiole-like base short, often forming a pseudostem ca. 5 cm. Scape arising from previous year’s leafless pseudobulb, erect, puberulent; rachis 2-5 cm, densely few to many flowered; floral bracts persistent, ovate-lanceolate, ca. 8 mm, abaxially puberulent. Flowers white; pedicel and ovary 10-14 mm, puberulent. Sepals similar, ovate-elliptic, 9-11 × 4-5(-7) mm, abaxially puberulent, 5-veined, apex acute. Petals subspatulate, 9-11 × 3-5 mm, glabrous, 3-veined, apex truncate and slightly mucronate; lip adnate to entire length of column wings, 8-10 × 6-8 mm, deeply 3-lobed; lateral lobes suboblong or obliquely ovate; mid-lobe subreniform, divided by a deep triangular sinus into 2 lobules, apiculate in sinus; lobules divergent, subobovate; disk with a semicircular cluster of many tuberous, wartlike calli at base; spur straight, cylindric, 7-8 mm, outside sparsely puberulent. Column ca. 3 mm, dilated toward apex, sparsely puberulent; rostellum 2-lobed, lobes ca. 1.2 mm; pollinia subclavate, ca. 1.5 mm; viscidium suborbicular, small. Fl. May-Jul.

Broad-leaved forests, shaded and damp places on grassy slopes; 700-1300 m. NW and W Guangxi, Guizhou, Yunnan [Bangladesh, Bhutan, Cambodia, NE India, Laos, N Thailand, Vietnam].


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