天山对叶兰 tian shan dui ye lan

Listera tianschanica Grubov, Rast. Tsentral. Azii, Mater. Bot. Inst. Komarova 7: 106. 1977.

Plants autotrophic, 3-4 cm tall. Rhizome with a few elongate roots. Stem slender, with 2 or 3 tubular sheaths at base. Leaves 2, opposite, borne at ca. middle of plant, broadly ovate to ovate, 0.9-1.5 × 0.8-1.4 cm, base broadly cuneate to subtruncate, apex subrounded to obtuse-acute. Peduncle pubescent; rachis 1.9-2.2 cm, pubescent, 2- or 3-flowered; floral bracts lanceolate, 1.5-3 mm, almost glabrous, acuminate. Flowers resupinate, green, lip tinged whitish green along apical margins; pedicel and ovary 2-3 mm, puberulent on ribs. Dorsal sepal narrowly elliptic-ovate, 2-2.5 × 1-1.1 mm, 1-veined, apex obtuse; lateral sepals narrowly ovate, oblique, 2.5-3 × 1-1.2 mm, 1-veined. Petals suboblong, 2.5-3 × 0.5-0.6 mm, apex obtuse; lip spatulate, 3.5-4.5 × 2-2.5 mm, with a pair of small auricles at base, apex shallowly 2-lobed; lobes diverging at an acute angle, suborbicular or broadly ovate, ca. 0.5 mm; disk with a fleshy callus near base. Column less than 1 mm; rostellum small. Fl. Jun.

● Open wet places in Picea forests; 2100-2200 m. C Xinjiang (N Tian Shan, Ürümqi).