Calypogeia gollanii A review of Calypogeia (Marchantiophyta) in the eastern Sino-Himalaya and Meta-Himalaya based mostly on types Bakalin, Vadim A. Klimova, Ksenia G. Nguyen, Van Sinh PhytoKeys 2020 153 111 154 5CF7DD11-D8AE-58FA-A4BE-AC3F80DE4AF5 (Steph.) Steph., Bull. Herb. Boissier (ser. 2) 8 (9): 668 (400). 1908. Jungermanniopsida Calypogeiaceae Calypogeia CoL Plantae Calypogeia apiculata Jungermanniales 0 111 Marchantiophyta species apiculata  = Calypogeia gollaniiSteph. ex Bonner Index Hepaticarum, 1963. nom. inval. (Art. 38.1(a); no description). Authentic material (invalid names have no types): India. NW Himalaya: Mussoorie W. Gollan 01 Nov 1900 (original material, probably scheduled as the type): G [G00067720/23987!*] Syn. nov.  Basionym.   Kantius apiculatusSteph., Hedwigia 34 (2): 51, 1895.  Type. Java. Prof. Stahl (Lectotype (designated here): G [G00061103!]).  Remarks. The species was originally described from Java ( Stephani 1895) and recorded from Borneo ( Chuah-Petiot 2011) and Sri Lanka ( Long and Rubasinghe 2014).  Calypogeia gollaniiin India is the synonym of  C. apiculata. Although  Calypogeia gollaniiis regarded as the synonym of  C. azureain the https://bryophyteportal.org/, the plants correspond in all ways to  C. apiculataSteph., although the leaf cuticle is very loosely (although obviously) papillose.  Calypogeia azureadoes not occur in East Asia ( Buczkowska et al. 2018) and has much wider underleaves.  Calypogeia apiculatamay also be mistaken for  C. sphagnicola(due to small underleaves) - generally  Sphagnumswamp species that could hardly be expected in the Sino-Himalaya. In addition,  Calypogeia sphagnicolahas highly distanced and smaller leaves and smooth leaf cuticles. Presumably, the reports of  C. sphagnicolain China may actually represent  C. apiculata. The description based on the lectotype of  C. apiculatais as follows: plants 1.0-2.2 mm wide, 3-5 cm long, pale yellowish brownish in the herbarium; stem ~180 µmwide; rhizoids sparse to numerous in obliquely spreading fascicles, leaves distant to contiguous, nearly planar to slightly convex, rarely incurved to dorsal side (probably due to long drying and repeated soaking), 600-1100 x450-800 µm, obliquely ovate, apiculate, very rarely shortly bidentate, decurrent in ventral base for 0.5-1.0 of stem width; underleaves as wide as stem or slightly wider, bilobed, undivided portion (1-)2 cells high, lateral teeth absent, decurrent for 1/3 of stem width or less; cuticle in leaves and underleaves very finely verruculose; cells in the midleaf 37-58 x25-35 µm, thin-walled, trigones very small and concave.