川西对叶兰 chuan xi dui ye lan

Listera smithii Schlechter, Acta Horti Gothob. 1: 144. 1924.

Plants autotrophic, 9-12 cm tall. Rhizome with several elongate, filiform roots. Stem slender, with 2 sheaths toward base. Leaves 2, opposite, borne above middle of plant, sessile, green, ovate or ovate-orbicular, 1.3-1.7 × 1.2-1.6 cm, base rounded or broadly cuneate, apex obtuse or subacute. Peduncle pubescent; rachis 1.5-4 cm, pubescent, laxly 2-5-flowered; floral bracts ovate-lanceolate, ca. 4 mm. Flowers small, resupinate, green with paler sepals and petals and a whitish margin to lip; pedicel ca. 3 mm, pubescent; ovary ca. 2 mm, sparsely pubescent. Dorsal sepal narrowly elliptic, ca. 3 × 1.2 mm, 1-veined, apex obtuse; lateral sepals ovate-lanceolate, falcate, ca. 3 × 1.5 mm. Petals linear-ligulate, oblique, ca. 2.8 × 0.4 mm, apex obtuse; lip spreading forward, obovate, ca. 8 × 2.5-3 mm, margin minutely papillose-ciliate, apex deeply 2-lobed; lobes almost parallel, linear-lanceolate, oblique, ca. 2.7 mm; sinus with a triangular tooth between lobes; anther inclined toward rostellum; rostellum broadly ovate, large. Fl. Jul.

● Forests; ca. 3900 m. NW Sichuan.