坚唇兰 jian chun lan

Sarcanthus dalatensis Guillaumin, Bull. Mus. Natl. Hist. Nat., sér. 2, 27: 397. 1955.

Stems to 10 cm. Leaves to 12, distichous, dark green, often spotted purple, oblong-elliptic, ca. 5 × 0.5 cm, distinctly V-shaped in cross section, fleshy, apex rounded. Inflorescence axillary, borne from upper part of stem, 3-4 cm, laxly up to ca. 8-flowered; floral bracts ovate, minute, rounded. Flowers ca. 1 cm in diam.; sepals and petals white, lip light purple, hypochile yellow inside, anther cap deep purple; pedicel and ovary ca. 1 cm, glabrous. Sepals glabrous; dorsal sepal oblong-elliptic, ca. 5 × 3 mm, rounded; lateral sepals almost rhomboid, subspatulate, ca. 5 × 4 mm, 3-veined, rounded. Petals spatulate, ca. 5 × 4 mm, 1-veined, rounded; lip ligulate, ca. 5 mm, fleshy; lateral lobes obscure, rounded; mid-lobe ovate; spur pendulous, cylindric, ca. 5 mm; posterior callus papillose, sulcate in middle. Column ca. 4 mm; rostellum pendulous, long; anther cap narrowly triangular.

Yunnan (without precise locality) [Thailand, S Vietnam].