Ficus fistulosa Reinw. ex Blume, Bijdr. (1825)
Latin for 'tube-shaped', referring to the hollow twigs.

Synonyms
Covellia subopposita Miq., Covellia tuberculata Miq., Ficus condensa King, Ficus curranii Merr., Ficus fistulosa var. angustifolia Miq., Ficus fistulosa var. cincta Hochr., Ficus fistulosa var. lucbanensis (Elmer) Corner, Ficus fistulosa var. obliqua Miq., Ficus fistulosa var. tengerensis (Miq.) Kuntze, Ficus grandidens Merr., Ficus harlandii Benth., Ficus lucbanensis Elmer, Ficus millingtonifolia Griff., Ficus polysyce Ridl., Ficus repandifolia Elmer, Ficus rubrovenia Merr., Ficus tengerensis Miq., Ficus tuberculata (Miq.) Miq.

Description
Understorey tree up to 20 m tall and 21 cm dbh. Stem with white sap. Twigs often hollow. Stipules ca. 10 mm long, glabrous. Leaves alternate, simple, penni- to tripli-veined, glabrous. Fruits ca. 10 mm diameter, yellow-brown, globose, fleshy figs placed in bundles along twigs and on the stem.

Ecology
In undisturbed mixed dipterocarp to sub-montane forests up to 1700 m altitude. On hillsides and ridges with sandy to clay soils. In secondary forests usually present as a pre-disturbance remnant.

Distribution
From northeastern India and southern China to New Guinea. In Borneo collected in Sarawak, Sabah and East-Kalimantan.

Local names in Borneo
Ara, Buruni-buruni, Kara, Kayu ara.