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"An open stand of Araucaria humboldtensis dominant on maquis at near 1100 m. Fogs are common at this altitude" (Schmid 1981).


Stand of A. humboltensis in the mountains of New Caledonia (Lowry 1996).


Distribution map (redrawn from de Laubenfels 1972).


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Conservation status 2010: protocol 3.1

Araucaria humboldtensis

Buchholz 1949

Common names

Humboldt's araucaria (Silba 1986).

Taxonomic notes

Syn.: Eutassa humboldtensis (J.T. Buchholz) de Laub. 2009. A molecular analysis places Araucaria humboldtensis into the clade of large-leaved species of New Caledonia, along with A. biramulata, A. laubenfelsii, A. montana, A. muelleri, and A. rulei, and a principal components analysis shows it as clearly distinct from a group containing all of the other species in the clade; this result, however, has not been explained (Gaudeul et al. 2012).


"A tree 6-15 m tall, with a candelabra-like crown. Bark exfoliating in quadrangular scales or in thin strips, bright brown turning gray. Branches somewhat in one plane, in a V-like pattern, 8-10 mm. in diameter. Juvenile leaves scale-like, triangular, 2.5-4 mm. long by 2-3 mm. wide, apex incurved. Adult leaves scale-like, midrib prominent, keeled, ovate, apex acuminate and incurved, 5-6 mm. long by 4-5 mm. wide. Male cone cylindrical, to 6 cm. long by 15 mm. wide, twisted, microsporophylls triangular, pollen sacs 6. Female cone subglobose, 9 cm. long by 8 cm. wide; bracts erect to 6 mm. long. Seed to 3 cm. long with a broad nut and with broad wings. Germination epigeal" (Silba 1986).

Distribution and Ecology

S New Caledonia: Mt. Humboldt, Mt. Mou and Mt. des Sources, 750-1500 m (Silba 1986). Occurs on the southern portion of the island, on ultramafic substrates (Schmid 1981).

The IUCN reports that the species is facing a very high risk of extinction in the wild due to a limited and severely fragmented distribution combined with ongoing decline in extent of habitat, number of subpopulations, and number of mature individuals.

Big tree







Gaudeul, M., G. Rouhan, M.F. Gardner, and P.M. Hollingsworth. 2012. AFLP markers provide insights into the evolutionary relationships and diversification of New Caledonian Araucaria species (Araucariaceae). American Journal of Botany 99(1):68-81.

See also

Association Endemia, a site devoted to New Caledonian species. Has excellent photos, a range map, and other information. In French.

de Laubenfels (1972).

Last Modified 2017-05-09