Cyperus strigosus

Among the more common Cyperus species throughout its range. Small individuals flowering the first year may be difficult to distinguish from C. polystachyos, C. odoratus, C. erythrorhizos, and C. esculentus, which may be sympatric. Cyperus strigosus has trigonous (three sided) achenes and three stigmas, unlike C. polystachyos; C. strigosus has flattened spikelets, unlike the subcylindric ones of C. odoratus; C. strigosus has floral scales usually 3 mm or more, unlike the smaller (1.2–1.5 mm) ones of C. erythrorhizos; C. strigosus has deciduous floral scales and a cormlike stem base, unlike C. esculentus.

Fresh seed is usually dormant, but dormancy can be broken by moist storage at 35 F (2 C) for 10-29 weeks. Seeds stored dry at room temperature for 4 years had low germination and those stored for 7 were not viable (Justice 1957).

Straw-color flatsedge is found in bogs, marshy areas, and wet prairies throughout all of Louisiana and east and southeast Texas. It is a widespread species found throughout the eastern United States and the Pacific States.

Marshes, ditches, bogs, and marshy areas, wet areas of lakes, ponds, shores, and low waste places.