Included here is the Bismarck Archipelago, the Admiralty Islands and the Solomon Islands. All lie within the Pacific zone of Melanesia.

Bismarckian Ultrabasic Forest

Ultrabasic rocks have their main outcrops on southern Santa Isabel, San Jorge and southern Choiseul, with smaller areas on Guadalcanol, San Cristobal and Floida. The forests here tend to be poor in species and usually dominated by Casuarine papuana and the endemic Dillenia crenata (Dilleniaceae). Other less common species include the myrtaceous shrub Myrtella beccarii and the endemic palms Gulubia hombronii and Pandanus lamprocephalus (Arecaceae). The latter is confined to San Cristobal.

References

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Brookfield, H. C. 1969. Some notes on the climate of the British Solomon Islands. Philosophical Transactions of the Royal Society of London, B255: 207-210.

Burslem, D. F. R. P., Whitmore, T. C. & Denmark, N. 1998. A thirty-year record of forest dynamics from Kolombangara, Solomon Islands. In: Forest Biodiversity Research, Monitoring and Modeling. Eds. F. Dallmeier and J. A. Comiskey. Man and the Biosphere Series, Volume 40. The Parthenon Publishing Group.

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Moore, H. E. 1969. A preliminary analysis of the palm flora of the Solomon Islands. Philosophical Transactions of the Royal Society of London, B255: 589-593.

Mueller-Dombois, D. & Fosberg, F. R. 1998. Vegetation of the Tropical Pacific Islands. Springer.

Balgooy, Van. M. M. J. 1960. Preliminary plant geographical analysis of the Pacific. Blumea, 10: 385-430.

Paijmans, K. 1973. Plant succession on Pago and Witori Volcanoes, New Britain. Pacific Science, 27: 260-268.

Proctor, J. 2003. Vegetation and soil and plant chemistry on ultramafic rocks in the tropical Far East. Perspective in Plant Ecology, Evolution and Systematics, 6: 105-124.

Schmid, M. 1978. The Melanesian forest ecosystems (New Caledonia, New Hebrides, Fiji Islands and Solomon Islands. In: Tropical forest ecosystems. Natural Resources Research Vol. XIV. UNESCO

Whitmore, T. C. 1969. Land Flora (Solomon Islands) Geography of the flowering plants. Philosophical Transactions of the Royal Society of London, B255: 549-566.

Whitmore, T. C. 1969. The vegetation of the Solomon Islands. Philosophical Transactions of the Royal Society of London, B255: 259-270.