Vasilis Teodoridis:
Orchidaceae | Calanthe
43. Calanthe graciliflora Hayata; J. Coll. Sci. Imp. Univ. Tokyo. 30(1): 329. 1911.
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Plants to 70 cm tall. Rhizome inconspicuous. Pseudobulbs subovoid; short; ca. 2 cm in diam.; with 3 or 4 sheaths. Leaves 3 or 4; well developed and spreading completely at anthesis; not deciduous; blade elliptic or elliptic-lanceolate; ca. 33 x 5.5-10 cm; apex acute; petiole-like base ca. 10 cm; usually forming a pseudostem 5-18 cm long and ca. 1.5 cm in diam. Scape arising from leaf axil; to 70 cm; densely puberulent; rachis to 32 cm; laxly many flowered; floral bracts persistent; lanceolate; 7-10 mm; glabrous. Flowers yellowish brown; with white lip; pedicel and ovary 15-20 mm; densely puberulent. Sepals reflexed; similar; subelliptic; 12-13 x 5-6 mm; glabrous; (3 or)4- or 5-veined; apex acute; lateral sepals slightly narrower than dorsal sepal. Petals obovate-lanceolate; 9-13 x 3-4 mm; glabrous; 3- or 4-veined; base shortly clawed; apex acute; lip adnate to entire length of column wings; ca. 10 x 10 mm; 3-lobed; lateral lobes obovate-cuneate; slightly oblique; ca. 4 mm; apex obtuse-rounded or obliquely truncate; mid-lobe subsquare; obovate; or transversely oblong; ca. 4 x 3 mm; apex dilated; emarginate and mucronate in sinus; disk with 4 brown spots and 3 parallel ridges; ridges fleshy; extending to middle of mid-lobe; triangular; becoming taller toward their apices; spur curved or straight; cylindric; 10-18 mm; outside sparsely puberulent; inside densely puberulent; apex attenuate. Column ca. 4 mm; glabrous; wings decurrent to lip and connecting to ridges on disk; rostellum 2-lobed; lobes ca. 1 mm; anther cap beaked; pollinia clavate; equal in size; ca. 2 mm; with conspicuous caudicles; viscidium suboblong; ca. 1 mm. 2n = 40*.
? Shaded and damp places in forests; streamsides; along valleys; 600-2400 m. Anhui; Fujian; Guangdong; Guangxi; Guizhou; Hubei; Hunan; Jiangxi; SW Sichuan; Taiwan; SE Yunnan; Zhejiang.