小叶对叶兰 xiao ye dui ye lan

Basionym: Listera microphylla S. C. Chen & Y. B. Luo, Novon 12: 438. 2002.

Plants autotrophic, 5-11 cm tall. Rhizome with a very few elongate, filiform roots. Stem 0.6-2 cm, slender. Leaves 2, opposite, borne below middle of plant, sessile, orbicular-ovate, 0.6-0.8 × 0.7-0.9 cm, minutely glandular hairy on both surfaces, base broadly truncate, apex obtuse-acute. Peduncle 2.6-6 cm, glabrous, sometimes with 1 sterile bract; rachis 1.6-3 cm, sparsely pubescent, laxly 3- or 4-flowered; floral bracts subovate or ovate-lanceolate, 3-4 × ca. 2 mm, apex acute. Flowers resupinate, greenish white; pedicel arcuate, 1.5-2 mm, slender, glabrous; ovary ca. as long as pedicel, glabrous; sepals and petals not spreading. Dorsal sepal oblong-ovate, ca. 3.5 × 1.5 mm, 1-veined, apex obtuse; lateral sepals lanceolate-ovate, slightly oblique, similar in size to dorsal sepal, outer surface carinate. Petals oblong-ovate, slightly shorter and narrower than dorsal sepal; lip spreading forward, obovate-cuneate, 5-5.5 × ca. 3.5 mm, apex deeply 2-lobed; lobes broadly oblong, ca. 1.4 × 1.6 mm, 3-veined, apices obtuse; sinus with small tooth between lobes; disk with an indistinct ridge extending from base of lip and continuous with tooth in sinus. Column suberect, 1.5-2 mm; anther ca. 1 mm. Capsule erect, ellipsoid, ca. 3 × 2 mm. Fl. Oct. 2n = 40 + 0-2B*.

● Grassy slopes; ca. 2500 m. NW Yunnan.