Dyera costulata (Miq.) Hook.f., J. Linn. Soc. 19 (1882)
(Latin for 'with conspicious veins')Synonyms
Alstonia costulata Miq.
Alstonia eximia Miq.
Alstonia grandifolia Miq.
Dyera laxiflora Hook.f.
Description
Emergent tree up to 75 m tall and 159 cm dbh. Stem with copious whit latex.
Stipules absent. Leaves in whorls, simple, penni-veined. Flowers ca. 3.5 mm in
diameter, white, with corolla tube, placed in whorls. Fruits ca. 320 mm long,
brown, dry, dehiscent follicles, placed in pairs, exposing wind dispersed
laminar seeds when open.
Ecology
In undisturbed forests up to 400 m altitude. Usually on hillsides and ridges
on clayey to sandy soils. In secondaru forests usually present as a
pre-disturbance remnant.
Uses
The latex is used to make chewing gum, while the wood is used for furniture,
boarding, matches, etc.
Distribution
Thailand, Peninsular Malaysia, Sumatra and Borneo (Sarawak, Brunei, Sabah,
West-, Central- and East-Kalimantan).
Local names
Borneo: Jelutong, Pantung.
