2. Collabium delavayi (Gagnepain) Seidenfaden, Opera Bot. 72: 26. 1984.
南方吻兰 nan fang wen lan
Tainia delavayi Gagnepain, Bull. Mus. Natl. Hist. Nat., sér. 2, 4: 708. 1932; Chrysoglossum delavayi (Gagnepain) Tang & F. T. Wang; Collabiopsis delavayi (Gagnepain) S. S. Ying.
Rhizome to 30 cm, 1.5-2 mm in diam., not branching. Pseudobulbs: leaf-bearing ones borne 6.5-8 cm apart, 1.5-2 × ca. 0.2 cm, rather angular in section; inflorescence-bearing ones 1.5-2 cm from leaf-bearing ones, smaller, cylindric. Leaf blade ovate-oblong, 5.5-12 × 2.5-4.3 cm, acute to acuminate; petiole 0.4-1.1 cm. Peduncle 13-17 cm; rachis to 8 cm, 4-7-flowered; floral bracts ovate-oblong, 0.6-1.1 cm × 2-5.5 mm, acute. Flowers recorded as white, with violet tips to sepals, yellowish with red lines, or purple; pedicel and ovary 12-13 cm. Dorsal sepal obovate to linear-lanceolate, 16-18 × 2-4 mm, 3-veined, acute to acuminate; lateral sepals unequal in size and shape, one more falcate than other, obovate to linear-lanceolate, 13-16.5 × 2-3 mm, 3-veined, acuminate. Petals similar to sepals, slightly falcate, 12-16.5 × 2-2.5 mm, 3-veined, acute to acuminate; lip 13-15.5 mm, 3-lobed; hypochile 7-10 × 9-10 mm; claw 4.5-5.5 mm; lateral lobes erect, subovate, somewhat falcate, 6-7.5 × 2.5-4 mm, distally obtuse to acute and irregularly toothed to lacerate; epichile broadly obovate to transversely elliptic, 5.5-6 × 7-8 mm, margin toothed to lacerate, apex truncate to somewhat emarginate, somewhat recurved; lateral keels 2, between lateral lobes turning into an erect, incurved ligulate lobe with a rounded top, each keel continuing as an entire, thin crest, ending halfway or on top of epichile; median keel commencing from fleshy part between elevation of keels as a low, fleshy, entire ridge ending on basal half or top half of epichile. Column 9-10 mm, top part truncate, acutely tipped; column foot spur saccate, cylindric, 5-6.5 mm. Fl. Jun, Nov.
● Primary forests, along streams, ravines, on rocks; 400-2400 m. Guangdong, N Guangxi, NE Guizhou, W Hubei, S Hunan, SE Yunnan.