|Pithecellobium dulce (Roxb.) Benth.|
This thorny, deciduous tree grows up to 10 m tall, forming impenetrable thickets. The seeds are dispersed by alien frugivorous birds. It is relatively resistant to fire and resprouts rapidly by basal or aerial shoots. The tree has not been evaluated for biological control, a strategy that would probably be opposed because of its use in landscaping.
It is found from sea level to 300 m elevation in dry habitats. Major infestations are at Mokuleia, O'ahu; the east end of Moloka'i; the gulches east of Lahaina, Maui; and South Kona, Hawai'i.