Psydrax odorata is a shrub or small tree ranging in height from 2 to 10 meters, but spreading only 1 to 2.5 m in width.
The elliptical leaves are glossy green on the top surface and up to 9 cm long. The small, white flowers are fragrant and are born in clusters up to 3.5 cm long. The fruits of alahe`e are between 0.5 and 1 cm in diameter, more or less round, and black at maturity. The fruits generally ripen in the late fall and winter and contain one or two seeds.
(Wagner, W. L., Herbst, D. R. and Sohmer, S. H. 1990. Manual of the flowering plants of Hawai'i)