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American Gromwell (Lithospermum latifolium Michx.)

Also known as American stoneseed.

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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.

BONAP notes the Massachussets population as adventive, reflecting introduction to a new area. We mark it expanded due to proximity to this species' native range, but note that this is an uncommon species that is largely restricted to intact woodlands and not appreciably spreading in most regions.