Flower, Weed
shale barren evening primrose
True seedTrue seed:
A mature fertilized ovule consisting of an embryo, with or without and external food reserve (e.g., endosperm) enclosed by the testa.
Irregularly triangular
Dark brown
Rough
Strong ridge where flat surfaces meet.
Often the surfaces are rounded.
State Noxious Weed: Hawaii
Not included
Onagraceae
Oenothera argillicola Mack.
Oenothera argillicola var. pubescens Mack.
