A taxonomic revision of Herminium L. (Orchidoideae, Orchidaceae) Author Raskoti, Bhakta Bahadur State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China Author Schuiteman, Andre Science Directorate, Royal Botanical Gardens, Kew, Richmond, Surrey TW 9 3 AB, U. K. Author Jin, Wei-Tao State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China Author Jin, Xiao-Hua State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China & Southeast Asia Biodiversity Research Institute, Chinese Academy of Science, Yezin, Nay Pyi Taw 05282, Myanmar xiaohuajin@ibcas.ac.cn text PhytoKeys 2017 2017-04-19 79 1 74 http://dx.doi.org/10.3897/phytokeys.79.11215 journal article http://dx.doi.org/10.3897/phytokeys.79.11215 1314-2003-79-1 254BFFC9FF9A3360AA0D4550FF8FFFEE 576376 3. Herminium albosanguineum (Renz) X.H. Jin, Schuit., Raskoti & L.Q. Huang, Cladistics 2015. Basionym. Bhutanthera albosanguinea Renz, Edinburgh J. Bot. 58: 101. 2001. Type . BHUTAN . Thimphu district , Darkey Pang Tso, north of the Paro , Wood J.R. , 7405 ( Holotype : E! [E00008001]) . Description. Plant 4.5 cm tall. Tuber not seen. Stem with tubular sheaths at base, 2-leaved. Leaves lanceolate, acute, 2.3-2.5 x 0.4-0.8 cm. Inflorescence terminal, racemose, 2-flowered; rachis 1 cm long; floral bract triangular. Flowers 1-1.3 cm across; sepals white, petals and lip red; pedicel and ovary twisted, 7-9 mm long. Dorsal sepal elliptic-obovate, rounded, margins glandular, 5 x 4 mm; lateral sepals elliptic, subacute, 6 x 4 mm. Petals spathulate, rounded, cucullate at apex, 5 x 2.2 mm (at wide apex). Lip 3-lobed, narrowed and subunguiculate at base, spurred, base 1 x 1 mm; lateral lobes lingulate, obtuse, 3 x 1 mm; mid-lobe lingulate, obtuse, 3 x 1 mm; spur conical, 2 mm long. Column short, 1.5-2 x 1.5 mm; pollinaria 1.6 mm long. Fruit not seen. Flowering time. August. Habitat. Terrestrial on rock crevices or cliffs at an elevation of 4100 m. Distribution. Endemic to Bhutan. Note. Our description is based on Pearce and Cribb (2001) and an image of the holotype, which is apparently the only collection made of this species so far. Herminium albosanguineum is similar to H. albomarginatum , but differs in having a fewer-flowered inflorescence, white sepals, red petals and lip. It is also similar to H. albovirens ; see under that species for a comparison.