4. Neottia tenii Schlechter, Repert. Spec. Nov. Regni Veg. 19: 376. 1924.
耳唇鸟巢兰 er chun niao chao lan
Plants leafless, holomycotrophic, ca. 25 cm tall. Peduncle sparsely pubescent above, with several sheaths; rachis pubescent, sublaxly ca. 20-flowered; floral bracts lanceolate, 5-6 mm, glabrous or nearly so, apex acuminate. Flowers resupinate; pedicel and ovary 7-8 mm, sparsely pubescent. Sepals lanceolate, 3-4 mm, 1-veined, apex subacute; lateral sepals oblique, slightly falcate. Petals linear-ligulate, slightly shorter than sepals, 1-veined, apex obtuse; lip spreading forward, narrowly oblong, 7-8 × ca. 3.5 mm, with a pair of auricles at base, apex 2-lobed; lobes subparallel to one another, lanceolate, oblique, 1-1.5 mm, margins minutely ciliate, apices acute and slightly incurved; auricles triangular, projecting backward, very small, slightly thickened at base; disk with 3-5 slightly thickened veins. Column slightly arcuate, ca. 2.5 mm; anther inclined toward rostellum, elliptic, ca. 0.6 mm; stigma concave, suborbicular, with slightly exserted margins; rostellum broadly ovate, rather large, slightly shorter than anther. Fl. unknown.
● N Yunnan.
The present authors have seen no specimens of this species. According to the original description, this species is similar to Neottia listeroides, differing only in the presence of a pair of auricles at the base of the lip.