A study was conducted to determine the floristic composition of the Sungai Kenau, Raub, Pahang. The study area was located in the lowland dipterocarp forest where logging and forest opening were common in Malaysia and the area have a population of Rafflesia. The method used was plotting with size of 100 m ×10 m for each plot. Each plot was then divided into 10 subplots measuring 10 m ×10 m. All trees with diameter at breast height (DBH) of 5 cm and above was measured and recorded. Results showed that there were 623 individual trees in an area of 0.5 hectares which includes 50 families, 98 genera and 140 species. Annonaceae was the most dominant family in the study area, while the dominant species in the entire study area was Saraca cauliflora (Leguminosae). The contribution of this study were the presence of tree species from Macaranga which can be used as biological indicator to detect the presence of an open area in the forest while Saraca cauliflora can also be a biological indicator that indicated the present of riparian areas.

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