PNGTreesKey – Jagera javanica (Blume) Blume ex Kalkman


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

Jagera javanica (Blume) Blume ex Kalkman

Blumea Vol. 7: 470 (1953)

Other Literature: P.W. Leenhouts, Flora Malesiana, Series 1 615-617 (1994) Fig. 48 (a-c).

Family: Sapindaceae

Timber Group: Non-timber species

Field Characters: Small sub-canopy tree (up to c. 15 m high, rarely to 20 m); Bole cylindrical (up to c. 30 cm diam.); straight (bole up to 5 m long); buttresses sometimes buttresses present or buttresses absent; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark grey, slightly rough, finely fissured; Subrhytidome (under-bark) green; less than 25 mm thick, 6.0-8.0; bark blaze consisting of one layer; faintly to non-aromatic; outer blaze white or yellow (pale (straw-coloured), markings absent; inner blaze white or yellow (pale (straw-coloured), markings absent; bark exudate (sap) present, colourless, not readily flowing (spotty), colour not changing on exposure to air, not sticky; terminal buds not enclosed by leaves.

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

Leaves: Leaves clustered at end of branches, usually whorled (with more than two leaves at one node of a branchlet), 6 (c.), compound (a leaf made up from two or more leaflets); petiole present, not winged, attached to base of leaf blade, swollen (at base); leaves pinnate (unbranched with more than three leaflets) (13-40 leaflets); petiolule not swollen; rachis present, absent, absent; leaves without a terminal leaflet (the number of leaflets even - paripinnate), broadest below middle or equally broad throughout much of length, 2.5-20.0 cm, 1.0-6.0 cm, leaflets alternate (to almost subopposite), symmetric; venation pinnate, secondary veins open, prominent, intramarginal veins absent; leaves lower surface brown or red (pale (rusty-coloured hairs), upper surface dark green, indumentum (hairs) present (on veins or all over lower surface), indumentum (hairs) dense; absent; domatia absent; stipules absent.

Flowers: Inflorescence terminal (by misinterpretation (inflorescences clustered near apex of axis) or axillary, flowers on a branched axis, cones absent; flowers bisexual, stalked (shortly (almost sessile), flowers with many planes of symmetry, 1.0-2.0 mm long, diameter small (up to10 mm diam.) (up to 2 mm diam.); perianth present, with distinct sepals and petals whorls, inner perianth white or pink; 5, free; stamens 8 (c.), present, free of each other; ovary superior, carpels joined (when more than one), locules 3; styles solitary, 1.

Fruits: Infrutescence arranged on branched axis, fruit 20.0-25.0 mm long, green, red, or brown (with rusty-coloured hairs), not spiny, non-fleshy, simple, dehiscent, capsule.

Distribution: West Sepik, East Sepik, Madang, Morobe, Western, Central, Northern & Milne Bay.

Jagera javanica
Botanical records
in PNGplants database

Map details


Notes: Notes Two subspecies are recognised. Jagera javanica subsp. javanica occurs in Papua New Guinea, whereas, subsp. australiana Leenh. is restricted to northern Australia.