Evening Primrose, Oenothera biennis (common evening-primrose) pollen grains, darkfield photomicrograph

---

Size: 3307px × 2948px
Photo credit: © Scenics & Science / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: biennis, evening, gametophytes, germinate, micrograph, oenothera, primrose, spikey, sporopollenin, star, sundrop, surface, weedy