Gardenia tubifera Wall., in Roxb. Fl. Ind. ed. 1, 2 (1824)
Latin for 'with a trumpet', referring to the flowers.

Synonyms
Gardenia elata Ridl., Gardenia lobbii Craib, Gardenia resinifera Korth., Gardenia speciosa (Hook.f.) Hook.f., Randia speciosa Hook.f.

Description
Sub-canopy tree up to 29 m tall and 36 cm dbh. Stipules ca. 5 mm long, triangular. Leaves opposite, simple, penni-veined, glabrous. Flowers ca. 52 mm diameter, white-yellow-orange, with up to 150 mm long corolla tube, flowers placed solitary at twig tips. Fruits ca. 42 mm diameter, pale green, dehiscent berry/capsule filled with many seeds in orange pulp.

Ecology
In undisturbed to slightly disturbed (open) mixed dipterocarp and swamp forests up to 500 m altitude. Usually on alluvial sites along rivers and streams on sandy soils. In secondary forests usually present as a pre-disturbance remnant.

Distribution
Thailand, Peninsular Malaysia, Sumatra, Borneo (throughout the island).

Local names in Borneo
Jambu-jambu.