Habenaria diplonema Schltr., Notes Roy. Bot. Gard. Edinburgh 5: 100. 1912.

2. Habenaria diplonema Schltr., Notes Roy. Bot. Gard. Edinburgh 5: 100. 1912.

Type.

China, Yunnan, 3300-3600 m elev., 1906. G. Forrest 2812 [ holotype: E (E00381985 image!); isotypes: IBSC (0635875!), CAL (CAL0000000748!), P (P00426408 image!)] .

Description.

Terrestrial herbs, 4-15 cm tall. Tubers globose-oblong. Stems densely papillate-pubescent. Leaves 2, opposite, basal; sheathing at base; leaf blade ovate to orbicular, 1-2.4 cm long, 1-2.2 cm broad, adaxially with yellowish-white venation, densely papillate, apex acute to acuminate. Inflorescence 3-12 cm long, sparsely 2-14-flowered; rachis 2-5.5 cm long, pubescent; floral bracts lanceolate, 3-6 mm long, apex acuminate. Flowers green, faintly fragrant; ovary and pedicel curved, 6-8 mm long, pubescent. Dorsal sepal broadly ovate, ca. 3.5 mm long, ca. 3 mm broad, glabrous, apex obtuse; lateral sepals oblique, ovate-elliptic, deflexed, ca. 4 mm long, ca. 2.5 mm broad, glabrous, apex obtuse. Petals obliquely falcate-ovate, ca. 3.5 mm long, 2-2.5 mm broad, glabrous, entire; lip 3-lobed, spurred; lateral lobes filiform, ca. 10 mm long; mid-lobe linear-lingulate, ca. 3 mm long; spur pendulous, clavate, 1-4 mm long. Column short; anther apex retuse; caudicles short; stigma processes clavate. (Fig. 6 View Figure 6 ).

Phenology.

Flowering from July to September.

Habitat.

Shady cliffs and rocks; 2700-4300 m elev.

Distribution.

S Hengduan; also in N Fujian of China. (Fig. 7 View Figure 7 ).

More illustrations.

Wu et al. (2010, fig. 192, 7-9).

Additional specimens examined.

S. HENGDUAN: Muli, Rangetzantze, 3500 m elev., 1937, T.T. Yü 14014 (KUN, PE); Yulong (Lijiang), 2800 m elev., 1935, C.W. Wang 70748 (PE, KUN); Yulong (Lijiang), 4200 m elev., 1914, C. Schneider 2459 (K).

Note.

The photograph of the type specimen housed at the herbarium of Royal Botanic Garden Edinburgh ( G. Forrest 2812, E00381985) was published along with the protologue, therefore this specimen is the holotype (Art. 9.1, Note 1 (b), Turland et al. 2018).