Colura calyptrifolia (Hook.) Dumort.

Singh, Sushil Kumar, Pócs, Tamás, Singh, Devendra & Kumar, Shashi, 2020, A synopsis of Colura (Dumort.) Dumort. (Marchantiophyta: Lejeuneaceae) in India, Cryptogamie, Bryologie 20 (10), pp. 111-129 : 116

Colura calyptrifolia (Hook.) Dumort. ( Fig. 8C)

Recueil d’Observations sur les Jungermanniacées fasc. 1: 12 (1835).

SPECIMENS EXAMINED. — India. Kerala, Idukki district, Anamuishola National Park, 2300 m, 08.XI.2017, Mufeed 7462 (ZGC!).

HABITAT. — Corticolous, growing in association with Cheilolejeunea xanthocarpa, Frullania sp., Parmelia genus of lichens, in moist shady areas of montane wet temperate forest at elevation c. 2300 m a.s.l.

DISTRIBUTION. — India [Kerala ( Mufeed et al. 2018)], Nepal, Sri Lanka, Taiwan, Chile, Africa, Europe ( Söderström et al. 2002; Gradstein & da Costa 2003; Zhu & Long 2003; Ros et al. 2007; Wigginton 2009; Long & Rubasinghe 2014).

DESCRIPTION

Colura calyptrifolia is characterized by 5-6 mm long and 1.2-1.3 mm wide plants; stem 87-100 µm in diameter, consisting of seven cortical and three medullary cells; leaves, 1.1-1.2 mm long, 0.18-0.25 mm wide, leaf cells thin-walled without trigones and intermediate thickenings; leaf lobules 0.90-1.2 mm long strongly inflated, forming a fusiform sac with a narrow beak towards apex, lobular beak shorter, ¼-⅓ as long as the whole leaf, free margin involute, strongly valve at the mouth of the sac, ovate to short-ligulate with hyaline border cells; underleaves deeply bilobed, lobes divergent, 3-4 cells wide at base; and by presence of discoid, 20-22 celled gemmae.