冬天麻 dong tian ma

Gastrodia hiemalis T. P. Lin; G. nipponica (Honda) Tuyama var. hiemalis (T. P. Lin) S. S. Ying.

Plants 2-5 cm tall. Rhizome subcylindric to fusiform, 3-5(-10) cm. Peduncle dark brown, densely many noded; rachis very short, 1-3-flowered; floral bracts broadly ovate, 3-4 mm. Flowers suberect, resupinate, opening widely, brown; pedicel and ovary dark brown, 10-12 mm, papillate; pedicel elongating to 50 cm in fruit. Perianth tube campanulate, ca. 15 mm, outer surface smooth; free portion of sepals spreading, ca. 5 mm, apex obtuse-rounded; free portion of petals ovate to suborbicular, much smaller than sepal lobes; lip simple to obscurely 3-lobed, broadly ovate-rhombic, ca. 5 × 6.5 mm, base shortly clawed, apex cuspidate; claw ca. 1.5 × 3.3 mm, with a pair of stalked, globose calli; disk with white hairs, with 2 small lamellae near apex of lip. Column ca. 6 mm, narrowly winged; column foot prominent, with a pair of subglobose calli. Capsule 20-35 mm. Fl. Dec.

Bamboo forests, bamboo plantations; 200-300 m. C and N Taiwan [Japan].