Dialium hydnocarpoides

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Dialium hydnocarpoides

Description

Trees, medium- to large-sized up to c. 30 m, dbh up to 45 cm; buttresses relatively high; twigs greyish brown to dark brown, lenticellate, brownish hairy when young, glabrescent. Leaves including petiole (5-)7-20(-24) cm long; petiolules 2-4 mm. Flowers white. Sepals 5, ovate-lanceolate, 3.5-4 by 1.5-2.5 mm, minutely hairy inside. Stamens 2, rarely 3; filaments 1-1.5 mm, glabrous; anthers 2.5-3 mm long, rather flattish on abaxial and adaxial sides, connective hairy on both sides. Panicles terminal, the lower primary branches subtended by reduced or normal leaves, rachis (6-)9-15(-20) cm, densely brownish hairy; pedicels 1-2 mm. Ovary inserted on a narrow, flattish and patent-hairy receptacle, 1.5-2 mm long; style 1-1.5 mm long, slightly recurved at the top. Fruits subglobose, sometimes slightly compressed, 1.5-2 cm in diameter; exocarp brittle, densely and rather persistently, brownish hairy. Seeds orbicular, c. 9 by 8 mm; testa chocolate brown, shiny.

Distribution

Asia-Tropical: Borneo (Kalimantan present, Sabah present), S Sumatra present
Malesia: S Sumatra, Borneo (Sabah, Kalimantan).

Taxonomy

At a glance, the flowers of this species could be mistaken for Dialium platysepalum but dissection will show that the receptacle is narrow with a flattish top, and the anthers have a flattish (not V-channeled) abaxial side.