PNGTreesKey – Calophyllum laticostatum P.F.Stevens


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

Calophyllum laticostatum P.F.Stevens

Australian Journal of Botany Vol. 22: 375 (1974) Fig. 18.

Other Literature: P.F. Stevens, Handbooks of the Flora of Papua New Guinea 83-85 (1995) Fig. 18.

Family: Clusiaceae

Timber Group: Occasional timber species

Field Characters: Large canopy tree (up to 30 m high, rarely to 45 m) or Small sub-canopy tree; Bole cylindrical (c. 90 cm diam.); straight (bole up to 30 m long); buttresses buttresses absent; spines spines absent; aerial roots rarely aerial roots present or aerial roots absent; stilt roots stilt roots absent; Bark yellow when young, dark grey, or dark brown, rough, fissured (often deeply so); Subrhytidome (under-bark) dark red or brown; less than 25 mm thick, 15.0-20.0; bark blaze consisting of one layer; faintly to non-aromatic; outer blaze white, pink, or red, markings absent; inner blaze white, pink, or red, markings absent; bark exudate (sap) present, yellow, not readily flowing (spotty), colour not changing on exposure to air, sticky; terminal buds not enclosed by leaves.

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

Leaves: Leaves spaced along branches, opposite (in pairs, opposite one another on the branchlet), simple (a leaf composed of a single blade); petiole present, not winged, attached to base of leaf blade, not swollen; leaves slightly broadest above middle or broadest at or near middle, (3.0-) 6.5-16.0 cm, (0.8-) 1.4-4.5 cm; symmetric, entire, not dissected or lobed, acute or slightly acuminate, venation pinnate, secondary veins closed, prominent, intramarginal veins absent; leaves lower surface green, upper surface dark green, indumentum (hairs) absent or present, indumentum (hairs) sparse; absent; domatia absent; stipules absent.

Flowers: Inflorescence axillary, rarely flowers on an unbranched axis or flowers on a branched axis, cones absent; flowers bisexual, stalked, flowers with many planes of symmetry; perianth present, with all sepals and/or petals (hence tepals) similar; 4-6, free; stamens 170 (c.), present, free of each other, free of the perianth; ovary superior, carpels joined (when more than one), locules 1; styles solitary, 1.

Fruits: Infrutescence arranged on unbranched axis, fruit 15.0-20.0 mm long, dark blue or brown (when dry), not spiny, non-fleshy, simple, indehiscent, drupe; seeds 1, about 10 mm long, not winged.

Distribution: Morobe, Milne Bay & New Britain.

Calophyllum laticostatum
Botanical records
in PNGplants database

Map details


Notes: Notes Often included in the family Guttiferae.