Pulai was named after Pulai River.[1] Pulai is a species of tree (sp. Alstonia angustiloba). The tree can be found in abundance at Mount Pulai where Pulai River come from.[2][3]
^"Terbitan Handbook" (PDF). johor.gov.my (in Burmese). Retrieved 28 April 2023.
^"Alstonia angustiloba". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 23 August 2020.
^Sidiyasa, Kade (September 2004). "Alstonia angustiloba Miq.". In Soepadmo, E.; Saw, L. G.; Chung, R. C. K. (eds.). Tree Flora of Sabah and Sarawak. (free online from the publisher, lesser resolution scan PDF versions). Vol. 5. Forest Research Institute Malaysia. pp. 17, 19. ISBN 983-2181-59-3. Archived from the original (PDF) on 27 September 2013. Retrieved 6 August 2013.