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Poorland Flatsedge (Cyperus compressus L.)

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Range - Expand

Native or Not Present
Native or Expanded
Expanded or Not Present
Native or 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.

This species has formed several isolated populations slightly north of its native range. It takes advantage of many anthropogenic habitats including irrigated fields, roadside ditches, and wet portions of lawns. We consider this species expanded because it is spreading on its own and, although it has only formed spotty new populations, it seems to be doing so consistently and it will likely increase over time.