Gastrodia tuberculata F. Y. Liu & S. C. Chen Acta Bot. Yunnan. 5: 76. 1983.

疣天麻 you tian ma

Plants 24-35 cm tall. Rhizome ovoid or obconic, 3-6 cm, stout, 1.5-2.8 cm in diam., fleshy, sparsely papillose, densely noded, with small scales at nodes. Peduncle 18-25 cm, with white longitudinal stripes, fleshy, with several sheaths at base; sheaths 7-12 mm; rachis 4-7 cm, laxly 2-10-flowered; floral bracts lanceolate, 5-8 mm. Flowers suberect, resupinate, whitish with greenish gray stripes; pedicel and ovary 6-7 mm, sparsely papillose. Perianth tube urceolate, 11-13 × 5-6 mm, with a deep sinus between lateral sepals, base inflated; free portion of sepals subovate to broadly ovate-triangular, 2-2.5 mm, outer surface smooth but minutely papillose, apex obtuse; free portion of petals broadly ovate, 1-1.5 mm, apex acute; lip obscurely 3-lobed, triangular-ovate, 6-8 × ca. 4 mm, glabrous, base shortly clawed, margin irregularly erose at apex, apex acute; claw 1.5-2 mm, with a pair of calli; disk with 4 fleshy, tuberculate, longitudinal ridges extending from base to apex. Column 7-8 mm, with a pair of toothlike projections at apex; column foot short. Capsule obovoid-ellipsoid, 11-13 × 6-7 mm. Fl. and fr. Mar-Apr.

● Bamboo forests, forest margins; 1900-2300 m. C Yunnan.