Title: Circumferentially winged seeds and leaf-like cotyledons of Couratari. Drawing by B. Angell.
Description: Circumferentially winged seeds and leaf-like cotyledons of Couratari. Note also the operculum, columella, and calycine ring. Note that the cotyledons are similar to one another, i.e., they are isocotylar and that the cotyledons are pulled from the seed coat upon germination (phanerocotylar). In addition, the cotyledons are above ground at all of stages of their development (epigeal).
Term:
Circumferentially winged seed
Definition:
A wing completely surrounding the circumference of the seed.