Do Macropidia and Crescentia only produce flowers?
Macropidia: Macropidia fuliginosa, the sole species of genus Macropidia, is a perennial rhizomatous flowering plant. Crescentia:  The species are moderate-size trees growing to 10 m tall, and producing large spherical fruits, with a thin, hard shell and soft pulp, up to 25 cm in diameter.
no