A monoecious tree up to 30m tall; multi-stemmed from the base, with up to six stems, columnar in shape, d.b.h. up to 80cm when mature. Bark thick peeling in horizontal plates, producing a banded effect, grey.
Adult leaves much longer than wide, 5.5-11 × 1.5-1.8mm, narrowly lanceolate, with an incurved bluntly acute apex, stomata in parallel rows from base to apex on upper surface, few and scattered on lower surface. Foliage densely arranged, almost adpressed.
Female seed-cones borne terminally, on very short branches, broadly ovoid, up to 9 × 6cm, glaucous when mature, bracts with a beak-like straight tip up to 15mm long, cones ripening from November to January. Male pollen-cones up to 5cm long, borne terminally in the upper part of the tree, maturing mid-February.
This species can be distinguished from other New Caledonian Araucaria species by its vey narrow foliage and the long, protruding bracts on the female seed-cone and by its multi-stemmed habit. It is the only Araucaria on the summit of Mt Panie although Araucaria montana occurs in small groups on the lower slopes.