Fraxinus dipetala, the California ash or two-petal ash, is a species of ash native to southwestern North America in the United States in northwestern Arizona, California, southern Nevada, and Utah, and in Mexico in northern Baja California. It grows at altitudes of 100âÂÂ1,300 m.
It is a deciduous shrub or small tree growing to 7 m tall, with cylindric to four-angled stems. The leaves are 5âÂÂ19 cm long, light to dark green, with three to seven (rarely nine) leaflets 1âÂÂ7 cm long, thick, and serrated along the margins. The flowers have two white lobe-shaped petals 2.5âÂÂ4 mm long, and are sweetly scented, hanging in fluffy clusters; unlike many ashes, they are bisexual, not dioecious. The fruit is a long, flat samara 2âÂÂ3.2 cm long and 5âÂÂ9 mm broad, green when immature and hanging in bunches.