Title: Floral parts of a papilionoid legume. Photo by S. A. Mori.
Description: Floral parts of papilionoid legume based on an unvouchered plant from Ghana, West Africa. The androecium is diadelphous, i.e., it is divided into two parts, one with nine stamens fused into a tube and the other consisting of a single, free stamen. This feature is unique to Fabaceae subfamily Papilionoideae.
Term:
Flag
Definition:
The upper, broad petal of Fabaceae. Same as banner, standard, and flag with standard the preferred term.