Pellacalyx lobbii (Hook.f.) Schimp., in E. & P. Pfl. Fam. 3, 7 (1893)
Named after T. Lobb [?-1894], a British plant collector.
Plaesiantha lobbii Hook.f.
Upper canopy tree up to 48 m tall and 85 cm dbh, twigs hollow. Stipules ca. 5 mm long,
dropped early. Leaves opposite, simple, penni-veined, glabrous, margin slightly
toothed. Flowers ca. 5 mm diameter, white, placed in axillary bundles. Fruits
ca. 12 mm long, green-red, berries.
Tree up to 35(-48) m by 40(-85) cm, sometimes with buttresses 1.5-5 m high. Bark grey to brown,
regularly polygonally fissured. Leaves obovate, obovate-oblong, 7-11(-15) by 3.5-5 cm, entire to
remotely serrulate, glabrous, sometimes lepidote above, rarely puberulous on the midrib and nerves
on both surfaces, abruptly acute, base cuneate; nerves 5-7 pairs, slightly elevated beneath, plane
above; petiole 6 mm. Stipules 3-5(-7) mm long. Calyx (incl. ovary) narrow, 6.5-8 by 2-3 mm,
glabrous or sparingly pubescent with minute, stellate hairs without, green, (3-)4(-5)-lobed, lobes
deltoid, 1.5-2 mm long, acuminate. Petals white, slightly obovate, 1.5-2 mm long, slightly dentate
in the upper half. Ovary 9-celled, style 3 mm long, slightly pilose. Fruit green, subglobose,
c. 8 mm diam., calyx lobes erect, very rarely reflexed. Seeds ellipsoid, 1-2 by 1 mm. [from Flora
In undisturbed to disturbed (open) mixed dipterocarp forests up to 300 m
altitude. On hillsides and ridges with sandy soils, but also on clay and
Wood fairly heavy, yellowish-brown, occasionally used for rafters and fuel.
Borneo: Banglai, Baniran, Mata undan, Paserujan gunung, Rasu.
Malaysia: Bulu-bulu, bebulu, membulu rimba, pianggu jantan, johor, lemak ketam.
Sumatra: Bulu rebung, Kayu bulu.