New records of Cololejeunea (Lejeuneaceae, Hepaticae) for China and Vietnam

Cololejeunea bhutanica Grolle and Mizut. and C. ceylanica Onr., two little known species known previously only from Bhutan and Sri Lanka, respectively, are newly found in Guangxi and Xizang, respectively. Cololejeunea horikawana (S. Hatt.) Mizut. previously reported only for Japan is now found in Yunnan. Cololejeunea horikawana is similar to C. goebelii (Gottsche ex Schiffn.) Schiffn., however differs in the morphology of the stylus and position of the hyaline papilla. Pantropical Cololejeunea wightii Steph. is newly found in Guangxi and Hainan. Cololejeunea tenella Benedix is reported for the first time for Taiwan. It is readily separated from the other Cololejeunea species of Taiwan by its falcate leaves, ± hooked first tooth of the leaf lobule, and the presence of ocellus-like basal cells in leaf lobe. Cololejeunea pseudoplagiophylla P.C. Wu and J.S. Lou is newly reported for Vietnam. Detailed illustrations of Cololejeunea bhutanica, C. tenella, and C. wightii are provided.