Cyperus bipartitus Torr. - Brook Nut Sedge


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Cyperus bipartitus - (image 1 of 4)



Family: Cyperaceae


Synonymous with C. rivularis Kunth


Wet, often sandy or gravelly ground. Muddy shores.




ME and Quebec west to ND, south to GA and TX..


Tufted annual to 20 cm. Cauline leaves normally shorter than the stem, 1-3 mm wide. Spikes mostly sessile; scales ovate and reddish, mainly at the base; stigmas 2; style divided up to about the middle. Achenes lenticular, longer than broad.


Flowers July to September

Wetland Indicator: Facultative Wetland +

I have most often found this species growing along wet foot paths.


Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY


Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.


USDA, NRCS. 2002. The PLANTS Database, Version 3.5 (

National Plant Data Center, Baton Rouge, LA 70874-4490 USA.




 Michael Hough 2009