Alstonia angustiloba

Alstonia angustiloba is a tree in the dogbane family Apocynaceae.

Alstonia angustiloba
Alstonia angustiloba on Pulau Ubin - panoramio.jpg
on Pulau Ubin, Singapore
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Apocynaceae
Genus: Alstonia
A. angustiloba
Binomial name
Alstonia angustiloba
  • Alstonia calophylla Miq.
  • Paladelpha angustiloba (Miq.) Pichon


Alstonia angustiloba grows as a large tree up to 40 metres (130 ft) tall, with a trunk diameter of up to 60 centimetres (24 in). The bark is greyish or brownish. Its fragrant flowers feature a white, yellow or cream corolla. The fruit is brownish, up to 35 centimetres (14 in) long.[2]

Distribution and habitatEdit

Alstonia angustiloba is native to Thailand, Peninsular Malaysia, Singapore, Sumatra and Java.[1] It is found in a variety of habitats from sea level to 200 metres (700 ft) altitude.[2]


  1. ^ a b c "Alstonia angustiloba". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 23 August 2020.
  2. ^ a b 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). 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.