Philippine phytogeography.
1993
Ashton P.S.
The vascular flora of the Philippines is a rich one by the standards of the region. Endenism for the islands as a whole is high, particularly among herbaceous genera. The flora overall is remarkably undifferentiated throughout the islands, in spite of their climatic diversity, and betray little of the hypothesized partial Asiatic, Pacific and Australasian origins of some continental rock fragments within the island. Endenism among the islands is low, as is the regional differentiation of the flora. Both are concentrated in the mountains. The flora of the most seasonal regions is an impoverished one, lacking in endemics.
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