Koompassia excelsa (Becc.) Taub., in Engl. & Prantl. Nat. Pflanzenfam. 3, 3 (1891)
Latin for 'emergent or high', referring to the height of the tree.
Abauria excelsa Becc.
Koompassia parvifolia Prain
Emergent tree up to 76(-88) m tall and 152(-270) cm dbh. Stem very smooth. Stipules ca.
3 mm long. Leaves alternate, compound, leaflets alternate, penni-veined,
glabrous, whitish below. Flowers ca. 2.5 mm diameter, white, placed in panicles.
Fruits ca. 108 mm long, orange-red, extremely flattened, light weight wind
dispersed pods, twisted along the length axis.
Giant tree up to 75(-88) m high, 1(-2.7) m in diam.; buttresses steep, thick and up
to 12 m high; bole straight, smooth and cylindric. Stipules oblong, 2-4.5 mm long,
pubescent outside. Leaves 7-12(-17)-foliolate, rachis slender 6-7.5 cm, pubescent,
glabrescent; petiole c. 1.5 cm; petiolules short, 1-2.5 mm, pubescent. Leaflets elliptic
oblong, sometimes elliptic, symmetrical, 3.1-3.7(-4.2) by 1-1.4(-1.7) cm; base subrotundate
to cuneate; apex obtuse or acute and slightly notched; glabrous except sparsely
hairy above, densely pubescent beneath. Inflorescences up to 11(-12.5) cm long, rachis
pubescent, densely flowered; pedicels c. 1.5 mm. densely puberulous. Calyx lobes lanceolate,
equally sized, 2.5-3.3 mm long, thinly puberulous outside. Petals oblong or
narrow-elliptic, 2.5-3 by 0.5 mm, acute or acuminate at the apex, glabrous. Stamens
slighdy longer than the petals; filaments stout, about as long as the anthers; anthers
oblong, 2-3 mm long, glabrous. Ovary sessile, oblong or obovate-oblong, compressed,
glabrous except some hairs at the basal part; style very short (c. 0.3 mm) and stigma
indistinct. Pods oblong or elliptic-obovate, 8-12.5 by 2-3.5 cm (including the wing),
strongly veined, glabrous. Seeds very flat, compressed, oblong, 2-3 by 1 cm.
[from Flora Malesiana]
Primary forests, stream valleys and lower slopes of ridges, up
to 400(-600) m altitude. The trees are often remaining in areas of secondary growth because
they are rarely felled because they often house bees nests which are harvested for the
honey. Also found on limestone.
Trees used to collect honey. Wood is used for charcoal, heavy construction
Peninsular Thailand, Peninsular Malaysia, Sumatra, Borneo, Philippines.
Borneo: Benggeris, Bunggaris, Kayu raja, Kempas madu, Mengaris, Tanjit, Tapang.