2. Calanthe angustifolia (Blume) Lindley, Gen. Sp. Orchid. Pl. 251. 1833.
狭叶虾脊兰 xia ye xia ji lan
Amblyglottis angustifolia Blume, Bijdr. 369. 1825; Alismorkis angustifolia (Blume) Kuntze; Calanthe phajoides H. G. Reichenbach; C. pumila Fukuyama; C. striata (Swartz) R. Brown var. pumila (Fukuyama) S. S. Ying.
Plants 30-40 cm tall, with small cylindric pseudobulbs and a creeping rhizome. Leaves 4-10, subbasal, usually well developed at anthesis, not deciduous; blade linear-lanceolate to narrowly elliptic, ca. 30 × 2-3.5 cm, glabrous, with 5 or 6 main veins, apex acuminate; petiole-like base 4-16 cm, conduplicate, articulate. Scapes 1 or 2, arising from axil of outer sheaths, erect, ca. 35 cm, with 3 or 4 widely spaced tubular sheaths; rachis 3-7 cm, laxly 10-15-flowered; floral bracts caducous, narrowly lanceolate, 20-40 mm, glabrous, apex acuminate. Flowers white; pedicel and ovary 12-20 mm, glabrous. Sepals similar, oblong-elliptic, 10-13 × 4-5 mm, 3-5-veined, apex acute. Petals ovate-elliptic, 8-11 × 4-6 mm, 3-5-veined, apex obtuse-rounded and apiculate; lip adnate to base of column wings, ca. 10 × 6 mm, deeply 3-lobed; lateral lobes subovate, ca. 6 mm across their apices; mid-lobe obcordate, ca. 5 × 6 mm, apex retuse; disk with 2 triangular ridges at base; spur slightly curved, somewhat clavate, 6-9 × 2-3 mm, slightly contracted at middle. Column ca. 5 mm; rostellum triangular, unlobed. Fl. Sep.
Evergreen broad-leaved forests or mossy forests; 1000-1500 m. Guangdong, Hainan, S Taiwan [Indonesia, Malaysia, Philippines].