The former species was surprisingly found at Victoria Peak, a famous tourist spot in Hong Kong, while Cheilolejeunea obtusifolia is apparently common in Zhejiang of China. According to the published literature and the present study, the flora of the genus Cheilolejeunea is very rich in Hong Kong and China. A total of sixteen species including three endemic to China has been reported. The number of species is apparently higher than that of the Philippines, Japan, Bhutan and Western Melanesia, but only second to that of Borneo as shown in Table 1. 1. In Hong Kong, Cheilolejeunea nipponica occurred in large patches on somewhat wet sandy rocks, along Mt. Austin Road at Victoria Peak at 500 m above sea level.
Local material cited above has abundant androecia and gynoecia.
Number of Cheilolejeunea species in China and adjacent areas. But the former is immediately separated from the latter by the large lobules and the creeping habit. The pycnolejeuneoid innovation leaf sequence, the smaller trigones of leaf-cells and the small underleaves with a transverse to subtransverse insertion in C. nipponica are features which distinguish it from C. trifaria. Hong Kong is at the southernmost distributional locality of this species. Specimen examined .