Home » Plants » Oenothera triloba

Stemless Evening Primrose (Oenothera triloba Nutt.)

Page contents

Range - Expand

Native or Not Present
Native or Expanded
Expanded or Not Present

This tentative map is based on our own research. It may have limited data on Canada and/or Mexico, and there is some subjectivity in our assignment of plants as introduced vs. expanded. Read more in this blog post.


Even though this species is uncommon towards the northeast border of its range, we have marked this species as "expanding" in the northeastern portion of its range, rather than introduced, because it is a weedy plant found in disturbed habitats, and it is not widely planted in gardens. It is probably expanding due to humans creating more of the open and disturbed habitats it prefers.

Oenothera triloba (stemless evening primrose) | USDA PLANTS Database (About This Site)

Stemless Evening Primrose | iNaturalist (About This Site)

Oenothera triloba | Biota of North America Project (BONAP) (About This Site)

Oenothera triloba | NatureServe Explorer (About This Site)

Oenothera triloba | Flora of North America (About This Site)