Sympetalandra unijuga

Author: (Airy Shaw) Van Steenis

Morphological description
Tree up to 30 m high, 50(-70) cm in diameter; buttresses up to 2 m high, extending 1 m from the trunk.

Leaves (unijuga Sympet fl branch FM51 ) bipinnate (some leaves pinnate in juvenile state), with 1 (2 or 3) pair(s) of pinnae , each pinna with (2 or)3 or 4(or 5) pairs of leaflets ; petiole 2-5(-8) cm; main rachis 6-10 cm; stalk of pinnae 2-5 cm; rachis of pinnae 6-15(-18) cm. Leaflets papyraceous to chartaceous, ovate-oblong to oblong-elliptic, 6-10(-17) by 2-4(-8) cm; acuminate at apex and often oblique, more or less rounded at base; petiolules 3-5 mm.

Inflorescences racemose and paniculate, up to 10 cm long, the rachis loosely to densely hairy; pedicels 0.5-1 mm, articulated at the top, leaving a short, thick knob after the flower has fallen.

Flower : (unijuga Sympet flower FM51 )Calyx not ciliate. Petals yellowish white. Ovary 3-6-ovuled.

Pods falcate, 15-36 by 3.5-4(-5) cm, coarsely and prominently reticulate-veined; pericarp woody, c. 2 mm thick.

Seeds massive, 1-5 developed, the 2 cotyledons large, thick, c. 4 by 2.5 by 2 cm, even larger in 1-seeded pods; testa pink when fresh, dark brown when dry.

Malesia : Sumatra (E Coast, Indragiri, Bengkulu), Malay Peninsula (Johore), Borneo (Sabah, Sarawak, Kalimantan), Philippines (Luzon).

Habitat & Ecology
In forests, never in wet places, from lowland up to c. 600 m altitude. Flowering in April-June, September; fruiting in July, September-November.