Shrub or small tree to about 5 m tall or more. Leaves 1-3(-7) cm long on short side shoots, entire to 3(-5) lobed and veined, densely felty hairy below. Flowers clear yellow 3.5 to 6 cm wide on spur like side-shoots, the petal-like sepals with a basal hairy nectary; late spring to early summer. Capsule ovoid to about 3 cm long. [Fremontia californica Torr.]
California, W Arizona, N Baja California
Leaves densely hairy below, flowers large and showy, more than 3 cm wide.
VIC: Beechworth (Mayday Hills Hospital).
F. mexicanum Davidson differs in having larger flowers 6-9 cm wide on the main shoots not on spurs, leaves that are 5-7 veined from the base, and seeds shiny not dull; these two species are sometimes confused, the latter being more showy.
Source: (1997). Sterculiaceae. In: . Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.