PNGTreesKey – Araucaria hunsteinii K.Schum.


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

Araucaria hunsteinii K.Schum.

Die Flora von Kaiser Wilhelms Land 11 (1889)

Other Literature: J.J. Havel, Forest Botany, Part 2 Botanical Taxonomy 20 Fig. 3-4.

Family: Araucariaceae

Timber Group: Softwood or Plantation species Tradename: Klinki Pine

Field Characters: Emergent tree (up to 90 m high); Bole cylindrical; straight (up to 300 cm diam.); buttresses buttresses absent; spines spines absent; aerial roots aerial roots absent; stilt roots stilt roots absent; Bark dark brown, rough, peeling (horizontally) or pustular, lenticels elongated laterally; Subrhytidome (under-bark) red or brown; less than 25 mm thick (5 mm); bark blaze consisting of one layer; strongly aromatic; pine-like; outer blaze red or brown, markings absent, fibrous; inner blaze red or brown, markings absent, fibrous; bark exudate (sap) present, colourless, not readily flowing (spotty), colour changing on exposure to air, to golden-coloured, sticky; terminal buds not enclosed by leaves.

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

Leaves: Leaves clustered at end of branches, spiral (leaves occurring singly at a node and arranged spirally up the branchlet), simple (a leaf composed of a single blade); petiole absent; leaves broadest below middle, 7.0-9.0 cm, 1.0-1.5 cm; symmetric, entire, not dissected or lobed, acute, venation parallel-veined (not distinct), secondary veins closed, not prominent, but visible, intramarginal veins absent; leaves lower surface dull green, upper surface dull dark green, indumentum (hairs) absent; absent; domatia absent; stipules absent.

Flowers: Inflorescence terminal, flowers on an unbranched axis, flowers arranged in a cone (strobilus); flowers unisexual, unisexual with male and female flowers on the same plant, not stalked, flowers slightly asymmetric (male flowers) or with one plane of symmetry (female flowers), 10.0-(male flowers; female flowers)-40.0 mm long, diameter small (up to10 mm diam.) (2-3 mm diam.); perianth absent; stamens 5-(reduced to pollen cells on lower surface of scales)-8; ovary superior, carpels solitary, locules 1.

Fruits: Infrutescence arranged on unbranched axis, arrangement of fruits present, cone 120.0-150.0 mm, 100.0 (c.) mm, green or brown; seeds 1 (per scale, with many per cone), much more than 10 mm long (30-40 mm long), winged (2 wings, each c. 40 mm long), narrow (longer than wide), seed 1-10 mm diam. (c. 10 mm diam.).

Description complete.

Distribution: Madang, Morobe & Eastern Highlands.

Araucaria hunsteinii
Botanical records
in PNGplants database

Map details

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