Uittienia modesta

Author: Van Steenis

Morphological description (modesta Uittienia flbr FM52 )
Tree up to 30(-40) m high and 80(-100) cm in diameter; buttresses up to 5 m high, extending outward 1-2 m. Stipules minute, linear, caducous.

Leaves unifoliolate (modesta Uittien lf/bark 431606), glabrous, petiole 8-20 mm, tthickened at basal end. Petiolules very short, 2-5 mm, wrinkeled. Leaflets chartaceous or subcoriaceous, ovate to ovate-oblong, elliptic or ovate to lanceolate, 7-20 by 3.5-7.5 cm; base obtuse or rounded; apex acuminate; lateral nerves 4-7 per side; veins loosely reticulate, obscure or visible on both surfaces .

Inflorescences axillary, fascicled short thyrses, with rachis or branches up to c. 7 cm long, sparsely puberulous; bracts and bracteoles minute, narrowly triangular, acute, deciduous.

Flowers: (modesta Uittienia fl parts FM52 )Hypanthium obscure or absent.Calyx 5-lobed, lobes narrowly imbricate, decidious, oblong or ovate, 3.5 by 1.5-2 mm, glabrous except sparsely shortly hairy on the margin. Corolla lobes 5, subequally obovate, 4-6 by 2-3 mm, glabrous, distinctly pinnately hairy. Disk distinct, cushion-like, hairy. Stamens 5(-7), all fertile, rarely 1-3 smaller; filaments free, c. 2 mm long; anthers basifixed, uniform, ovoid, dehiscing lengthwise. Ovary subglobose or broadly ellipsoid, 1-1.5 mmm long, 1-ovuled; pistil 5-6 mm long; stipe distinct, 2 mm; style filiform, slightly hairy, 2-2.5 mm, stigma indistinct.

Pods often only one developed from an inflorescence, on a thickened woody stalk (c. 1 cm in diameter), globose, c. 6 cm in diameter, woody, with a roughish, somewhat scurfy-granular brown surface, glabrous; pericarp rather hard and thick (4-5 mm) (modesta Uittienia pod FM52).

Seed one in each pod, subglobose, c. 4 cm in diameter; endosperm almost filling the seed; embryo minute, conical.

Malesia : Sumatra (Indragiri, Palembang), Borneo (Sabah: Tawau; Kalimantan: W, SE, and mainly E regions).

Habitat & Ecology
Primary forest, often occurring below 100 m, sometimes up to 400(-600) m altitude Fl. April, June, July, November; fr. June, July, September, October

The timber has the same properties and uses as that of Dialium species. See Rojo & Alonzo (1993) 165.