Crescentia alata
A cauliflorus, large-fruited tree of the subtropics and tropics, reaching its northernmost extent in the vicinity of Hermosillo.
A flower on the campus of Universidad de Sonora, 28 Oct 2006.
Closer view of a flower, Universidad de Sonora, 28 Oct 2006.
Leaves, Universidad de Sonora, 28 Oct 2006.