Fraxinus uhdei (Wenzig) Lingelsh.
Mexican ash

This tall, deciduous tree has been planted extensively by foresters. It is among the most successful trees for reforestation and has spread into adjacent areas, forming dense stands from which most native species are excluded. The seeds are dispersed by wind. Its response to fire in Hawai'i is unknown. Because of its use in forestry, it is very unlikely that it will be evaluated for biological control.

The most extensive infestations are along the Honouliuli trail, O'ahu; on Moloka'i; and in the Makawao Forest Reserve and Olinda areas, Maui. It grows best between 1,000 and 1,750 m but also grows up to 2,000 m.

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