Are the heart-shaped leaves wider than they are long, with fruit a small pod?
CLUE: Spring blooms purple to red, native to the Southwest.

Are the leaves longer than they are wide, the fruit a dry, orange to yellow DRUPE.
CLUE: This tree is native from the southern Great Plains west to California, Oregon, and Washington.

Are the leaves 5–12" long, very narrow and sometimes arranged oppositely; fruit a 4–8" long, narrow, beanlike CAPSULE?
CLUE: The tree is native only to the extreme Southwest.