There are two other unpublished studies on mosses in CRP. The first one was by Kong (2006), who conducted a study on the diversity of mosses in Keningau Research Permanent Plot which is only 50 m × 50 m. She collected 40 species belonging to 26 genera and 14 families. The second one was by Chin (2008), who has studied the diversity of epiphytic mosses within 0–2 m of tree trunks, in the Mount Alab Permanent Research Plot (50 m × 50 m). She collected 20 species in 10 genera and seven families in this mossy forest (1,700–1,800 m a.s.l.). The present report attempts to produce a comprehensive checklist of mosses found in CRP based on collections from the year 2002 to 2008 and herbarium specimens deposited in the BORNEENSIS Herbarium of the Institute for Tropical Biology and Conservation, Universiti Malaysia Sabah (BORH) and Herbarium of Museum of Nature and Human Activities, Hyogo (HYO).