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Hartweg's Sundrops (Oenothera hartwegii Benth.)

Also classified as Calylophus hartwegii (Benth.) P.H. Raven.

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Range - Expand

Native 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.

This species is also native to Mexico, through the north and farther south along the West Coast, but we have yet to build this portion its range map.