About 30 genera and 150 species of trees and shrubs, of wide distribution in trop. and warm regions.  Bark bitter: lvs. alternate or rarely opposite, usually pinnate, not punctate, stipules minute or 0: fls. unisexual, regular, in panicles or racemes; calyx 3-5-lobed or -parted; petals 3-5, rarely 0: disk annular or elongated, entire or lobed, rarely 0; stamens as many or twice as many as petals, often with a scale at base of filament; ovary 2-5 lobed and 1-5 celled with axile placentation or of 2-5 distinct 1-celled pistils, the ovules usually solitary in the cells, styles 2-5, free or partially united: fr. a drupe, caps. or samara.  (Bailey 611).  Second spelling of family name from Munz, Flora So. Calif. 828.


Upper Newport Bay species within the family:


Ailanthus altissima