Habenaria glaucifolia Bureau & Franch., J. Bot. (Morot) 5: 152. 1891.

Pandey, Tirtha Raj & Jin, Xiao-Hua, 2021, Taxonomic revision of Habenaria josephi group (sect. Diphyllae s. l.) in the Pan-Himalaya, PhytoKeys 175, pp. 109-136 : 109

4. Habenaria glaucifolia Bureau & Franch., J. Bot. (Morot) 5: 152. 1891.

Senghasiella glaucifolia ≡ Senghasiella glaucifolia (Bureau & Franch.) Szlach. J. Orchideenfreund 8: 365. 2001.

Type.

China, Sichuan, Prince Henry D’Orleans s. n. [lectotype designated here: P (P00426784 image!)] .

Description.

Terrestrial herbs, 12-50 cm tall. Tubers oblong or ovoid. Stems erect, pubescent. Leaves 2, opposite, basal; base obtuse-rounded and amplexicaul; leaf blade spreading horizontally, abaxially tinged with greyish-white, adaxially purplish-green, ovate-orbicular, 2-5 cm long, 1-4.7 cm broad, apex acute-acuminate. Inflorescence 8-45 cm long, 2-8-flowered; rachis 4-18 cm long, pubescent; floral bracts lanceolate or ovate, apex acuminate. Flowers yellowish to yellowish-white; ovary and pedicel twisted, 2.2-3.5 cm long, pubescent. Dorsal sepal forming a hood with petals, erect, ovate or oblong, concave, 10-13 mm long, 6-7 mm broad, apex obtuse; lateral sepals reflexed, obliquely ovate or oblong, 11-14 mm long, 7-7.5 mm broad, apex acute. Petals deeply 2-lobed; upper lobe spatulate-oblong, 12-15 mm long, ca. 6 mm broad, margin ciliate, apex obtuse; lower lobe linear-lanceolate, ca. 4 mm long, ca. 1 mm broad, apex acute; lip reflexed, base with a short claw, deeply 3-lobed, spurred; lateral lobes divaricate, linear, 2.5-4 cm long, circinate toward apex; mid-lobe straight, linear, 1.1-1.4 cm long; spur pendulous, cylindrical-subclavate, 2-3 cm long. Column short; anther parallel, connective wide; pollinia granular; caudicles slender, elongated; stigmatic processes closely parallel, lingulate. (Fig. 10 ).

Phenology.

Flowering from July to September.

Habitat.

Montane forests, grasslands; 2000-4400 m elev.

Distribution.

Yarlung Zangbo-Brahmaputra, Tangut, N and S Hengduan; widely spread in eastern part of Pan-Himalayan Region. Also found in Gansu, Guizhou and Shaanxi of China. (Fig. 11 ).

More illustrations.

Wu et al. (2010, fig. 194, 1-2).

Additional specimens examined.

YARLUNG ZANGBO-BRAHMAPUTRA: Mishmi Hills, 1911, Bailey s. n. (E); Zayü, Guyu, Luoma, 2996 m elev., 2009, X.H. Jin et al. SET-ET344 (PE); Zayü, Shang, 3400 m elev., 2013, Jin et al. ST-2554 (PE). TANGUT: Sêrxü, 3900 m elev., 1974, Vegetation Team of Sichuan 5771 (PE). N HENGDUAN: Danba, 3000 m elev., 1940, Qu 7523 (PE); Heishui, 3200 m elev., 1957, Li 73181 (PE); Heishui, 1959, Chuan 1432 (PE); Hongyuan, 2900 m elev., 1957, Zhang & Zhou 22665 (PE); Jinchuan, 2450 m elev., 1957, Li 75398 (PE); Litang-Yalong, 1921, F. Kingdon-Ward 4466 (E); Maoxian, 1952, He & Zhou 13230 (PE); Markam, 2700 m elev., 1957, s. coll. 22969 (PE); Markam, 2900 m elev., W.L. Chen 766 (PE); Xiaojin, Gasiling, 3100 m elev., 1957, J. Zhou 204 (IBSC); Xiaojin, 2450 m elev., 1958, Zhang & Wang 5907 (PE); Yajiang, 3700 m, elev.1961, Jiang 9863 (PE); Yajiang, 2875 m elev., 2006, Boufford et al. 35947 (PE, KUN). S HENGDUAN: Daocheng, 3100 m elev., 1973, Sichuan Vegetation Survey Team 2391 (PE): Daocheng, 4300 m elev., 1973, Sichuan Vegetation Survey Team 3645 (PE): Dêqên, 3100 m elev., 1937, T.T. Yü 9867 (PE); Eryuan, 2900 m elev., 1963, NW Yunnan Team 6339 (PE); Ganluo, 2000 m elev., 1959, Chuan 4191 (PE); Kangding, 1951, Hu & He 10401 (PE); Kangding, 3500 m elev., 1963, Guan & Wang 808 (PE); Kangding, 3650 m elev., 1982, K.Y. Lang et al. 945 (PE); Luding, 2420 m elev., 1959, Jiang & Jin 1949 (PE); Meigu, 2100 m elev., 1959, Chuan 1113 (PE); Meigu, 2300 m elev., 1976, s. coll. 13083 (PE); Mianning, 3300 m elev., 1940, Qu 7353 (PE); Muli, 1921, F. Kingdon-Ward 4571 (E); Muli, Ye-tze, 3100 m elev., 1937, T.T. Yü 7022 (PE); Shangri-la, 3200 m elev., 2010, Kham Expedition 10-3079 (PE); Tianquan, 1959, Chuan 853 (PE); Weixi, 3200 m elev., 1935, C.W. Wang 68011 (PE); Yanyuan, 2500-2600 m elev., 1960, Jiang 5991 (PE); Yulong (Lijiang), 2900 m elev., 1981, Hengduanshan Team of Beijing Institute 02666 (PE); Yulong (Lijiang), 1910, G. Forrest 6050 (PE).

Figures

Figure 10. Habenaria glaucifolia A habit B floral bract C pedicellate ovary with spur D petal E dorsal sepal F lateral sepal G lip (A photographed from K. Y. Lang et al. 945, PE B-G drawn from the same by T. R. Pandey).

Figure 11. Distribution of Habenaria glaucifolia (black circles) in the Pan-Himalaya.