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Kanaloa, a New Genus of Fabaceae (Mimosoideae) from Hawaii

David H. Lorence and Kenneth R. Wood
Novon
Vol. 4, No. 2 (Summer, 1994), pp. 137-145
DOI: 10.2307/3391582
Stable URL: http://www.jstor.org/stable/3391582
Page Count: 9
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Kanaloa, a New Genus of Fabaceae (Mimosoideae) from Hawaii
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Abstract

Kanaloa kahoolawensis Lorence & K. R. Wood, a new genus and species of Fabaceae subfamily Mimosoideae tribe Mimoseae, is described from the Hawaiian Island of Kaho'olawe. Based on morphology, wood anatomy, pollen structure, and chromosome number (2n = 28), Kanaloa is described as a monotypic genus of shrubs allied to genera belonging to the Leucaena and Dichrostachys groups of Mimoseae, from which it is differentiated by its tergeminate leaves, monospermous fruits inertly dehiscent along two sutures with the valves separating into inner and outer envelopes, and large cordiform seeds. The new genus is extremely rare and currently known from only two remaining plants on Kaho'olawe, a small, arid, and highly disturbed island. Fossil pollen attributable to Kanaloa has been found in core samples from lowland sites on O'ahu dating to the early Pleistocene.

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