Artocarpus longifolius Becc., For. Borneo (1902)
Latin for 'long leaves'.
Tree with abundant white sap. Stipules not surrounding the twigs, not leaving circular scar when dropped.
Leaves alternate, simple, elongate, hairy. Fruit placed on branches, c. 2 cm diameter, smooth but hairy.
Tree up to 19 m tall, 30 cm diameter. Bark reddish brown, smooth. Twigs 4-6 mm thick,
densely pubescent with reddish brown hairs. Stipules non-amplexicaul, lanceolate, 0.5-1.5 cm
long, persistent. Leaves simple, distichous, upper surface glabrous except for the hairy veins,
lower surface soft-hairy; oblanceolate, oblong or narrowly obovate, 11-36.5 x 4.5-16 cm, base
attenuate, margin entire, plane, apex acuminate, acumen up to 2 cm long; midrib flat above;
lateral veins 11-15 pairs, looping near the leaf margin, raised below, sunken above; intercostal
venation scalariform or reticulate, raised below, sunken above; petiole 0.3-0.7 cm long, hairy.
Inflorescences solitary, axillary; bracts slenderly stalked, with peltate upper parts; peduncle 1.2-
3 cm long, soft-hairy. Male heads obovoid, 0.8-2 cm long; perianth comprises 3 free tepals,
stamens c. 0.5 mm long, filaments broad, constricted at the upper parts, anthers globose, c. 0.2
mm across. Female flowers with exserted styles. Syncarps ellipsoid, c. 2 cm diameter
(immature), surface almost smooth, soft-hairy; peduncle 3-6 cm long, soft-hairy. [from Tree Flora
of Sabah and Sarawak]
In undisturbed to slightly disturbed mixed dipterocarp and keranga forests
up to 100 m altitude. On hillsides and ridges with sandy soils.