PNGTreesKey – Ormosia calavensis Azaola ex Blanco


Barry Conn (NSW) & Kipiro Damas (LAE).
Guide to trees of Papua New Guinea
Copyright held by the authors, National Herbarium of New South Wales, and Papua New Guinea National Herbarium

Ormosia calavensis Azaola ex Blanco

Flora de Filipinas Vol. ed. 2: 230 (1845)

Other Literature: B. Verdcourt, A Manual of New Guinea Legumes 287-289 (1979) Fig. 63.

Family: Fabaceae

Timber Group: Non-timber species

Field Characters: Small sub-canopy tree (up to 20 m high); Bole cylindrical (up to 60 cm diam.); straight (bole up to 8 m long); buttresses buttresses present; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark grey or dark brown, rough, fissured or pustular, lenticels elongated vertically; Subrhytidome (under-bark) pale yellow; less than 25 mm thick; bark blaze with two layers; faintly to non-aromatic; outer blaze pale yellow, with stripes (brown); inner blaze white (cream-coloured), with stripes (brown); bark exudate (sap) absent; terminal buds not enclosed by leaves.

Indumentum: Complex hairs absent; stinging hairs absent; mature twig indumentum (hairs) absent.

Leaves: Leaves spaced along branches, spiral (leaves occurring singly at a node and arranged spirally up the branchlet), compound (a leaf made up from two or more leaflets); petiole present, not winged, attached to base of leaf blade, not swollen; leaves pinnate (unbranched with more than three leaflets); petiolule slightly swollen; rachis present, absent, absent; leaves with a terminal leaflet (the number of leaflets odd - imparipinnate), broadest at or near middle or equally broad throughout much of length, 2.5-15.0 cm, 1.8-55.0 (-70.0) cm, leaflets opposite, symmetric, terminal developing leaflet buds absent; venation pinnate, secondary veins open, prominent, intramarginal veins absent; leaves lower surface green, upper surface dull dark green, indumentum (hairs) absent or present, indumentum (hairs) dense to sparse; absent; domatia absent; stipules present, free, laterally placed, not encircling the twig, scale-like, not fringed, small, not persistent.

Flowers: Inflorescence terminal and axillary, flowers on a branched axis, cones absent; flowers bisexual, stalked, flowers with one plane of symmetry, 8.0-12.0 mm long, diameter large (more than10 mm diam.); perianth present, with distinct sepals and petals whorls, inner perianth white or at base mauve; 5, free; stamens 10, present, at base joined, free of the perianth; ovary superior, carpels joined (when more than one), locules 1; styles solitary, 1.

Fruits: Infrutescence arranged on branched axis, fruit 20.0-40.0 mm long, brown to black, not spiny, non-fleshy, simple, dehiscent, legume; seeds 1 (-2), about 10 mm long (9-13 mm long), not winged, broad (as wide as long), seed 1-10 mm diam. (flattened, 8-11 mm wide).

Distribution: Morobe, Southern Highlands, Western, Milne Bay.

Ormosia calavensis
Botanical records
in PNGplants database

Map details


Notes: Notes This species is classified in Fabaceae subfamily Faboideae.