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Cyperus engelmannii
Cyperus engelmannii, commonly known as Engelmann's flatsedge, is a species of flowering plant in the sedge family Cyperaceae. It is native to North America but the full extent of its range is not well understood. The name honors the German-American botanist George Engelmann who collected its type specimen near St. Louis in 1845. It is similar in appearance to Cyperus odoratus and the name is considered by some to be a synonym for the latter.
Cyperus engelmannii is native to North America. In the United States, it ranges from Massachusetts to Minnesota, southward to Virginia and Missouri, but the full extent of its range in North America is not known. As of November 2025, it is reported from the following provinces and states:
Cyperus absconditicoronatus · Cyperus acholiensis · Tapertip flatsedge · Cyperus afroalpinus · Cyperus afrodunensis · Cyperus afromontanus · Cyperus afrovaricus · Inflatedscale flatsedge · Cyperus ajax · Cyperus alaticaulis · Cyperus albopilosus · Cyperus albopurpureus
Text excerpted from the Wikipedia article Cyperus engelmannii by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
