西南虾脊兰（中国野生兰彩色图谱）
Calanthe herbacea Lindl., Fol. Orch. Calanthe 10. 1854; Rchb. f. in Walp. Ann. Bot. Syst. 6: 920. 1864; Hook. f ., Fl. Brit. Ind. 5: 852. 1890, et Ann. Bot. Gard. Calcutta 5: 30. pl. 44. 1895; King et Pantl. in Ann. Bot. Gard. Calcutta 8: 172. Pl. 233. 1898; Rolfe in J. Linn. Soc. Bot. 36: 26. 1903; Schltr. in Fedde Repert. Sp. Nov. Beih. 4: 238. 1919; Mitra, Fl. East. Ind. 1: 327. 1958; S. Y. Hu i n Quart. J. Taiwan Mus. 25 (3, 4): 202. 1972, p. p. ; Averynov, Vasc. Pl. Syn. Vietnam. Fl. 1: 45. 1990, et Iden. Guide Vietnam. Orch. 104. 1994; Z. H. Tsi, S. C. Chen et K. Mori, Wild Orch. China 54. Pl. 59. 1997; 中国兰花全书137.图6-7 (139 14). 1998.——Calanthe brevicolumna Hayata in J. Coll. Scl. Univ. Tokyo 3 (1): 328. 1911, et Icon. Pl. Formos. 4: 65. fig. 30. 1914.
Humid places in dense forests, along valleys; 1500-2100 m. S Guangxi, SE Xizang, S and SE Yunnan [India (Sikkim), Vietnam].
本种在体态上十分相似于三褶虾脊兰Calanthe triplicata (Willem.) Ames,不同之处在于本种的花苞片披针形，先端渐尖，萼片和花瓣黄绿色，花瓣匙形且基部无爪，距通常较长。 |
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Leaves 3 or 4, well developed and spreading at anthesis, not deciduous; blade elliptic or elliptic-lanceolate, 15-30 × ca. 9 cm, abaxially puberulent, 3- or 4-veined, apex acute or acuminate; petiole-like base 10-20 cm, slender. |
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Leaves 2 or 3, basal, not well developed at anthesis, not deciduous; blade elliptic or obovate-lanceolate, 18-24 × ca. 8.5 cm, abaxially densely puberulent, 3-veined, apex acute; petiole-like base usually forming a pseudostem ca. 6 cm. |
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Scape arising from leaf axil, erect, to 70 cm, puberulent; rachis 8-15 cm, laxly ca. 10-flowered; floral bracts persistent, lanceolate, ca. 10 mm, abaxially puberulent. Flowers yellowish green; pedicel and ovary ca. 30 mm, puberulent. Dorsal sepal reflexed, obovate-lanceolate, ca. 15 × 7 mm, abaxially puberulent, 5-veined, apex obtuse and mucronate; lateral sepals reflexed, elliptic, oblique, ca. 15 × 6 mm, abaxially puberulent, 5-veined, base clawed, apex acute. Petals reflexed, subspatulate, ca. 12 × 2-2.5 mm, glabrous, apex obtuse; lip adnate to entire length of column wings, deeply 3-lobed; lateral lobes ovate, 6-7 × ca. 5 mm, apex obliquely truncate; mid-lobe divided by a deep sinus into 2 lobules, apiculate in sinus; lobules divergent, ca. as large as lateral lobes; disk with a cluster of yellow wartlike calli at base; spur slightly arcuate, yellowish green, 20-30 mm, slender, outside puberulent, apex obtuse. Column white, ca. 7 mm, dilated at apex, subglabrous; rostellum 2-lobed; anther cap white; pollinia clavate, subequal in size, ca. 2 mm; viscidium subsquare, ca. 1 mm. Fl. Jun-Aug. 2n = 40, 40 + 2B, 42. |
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