Mosses and liverworts (bryophytes) are one of the most characteristic phenomena of the tropical montane rainforest. On Mt. Kinabalu. they exhibit the typical aspect of the "mossy forest". Every visitor is faced with a large variety of shapes, sizes and colours. However, in contrast to flowering plants, very little is known about bryophytes. This booklet will give some information on this group of plants with special reference to the species occuring in Kinabalu Park, particularly the common species which are met by the visitor at Poring Hot Springs, the trails around the Park Headquarters and along the summit trail.