Cyperus strigosus Linnaeus var. strigosus. Common name: Straw Flatsedge, False Nutsedge. Phenology: Jul-Oct. Habitat: Marshes, ditches, wet flatwoods, wet disturbed areas. Distribution: QC west to SD, south to FL and TX; also in w. North America.

ID notes: This species is often confused with C. esculentus; the two are not closely related (see Key ZE). Small, looser-spiked plants of C. strigosus are easily distinguished at a glance by their longer, more spreading and loosely imbricate scales, greenish in flower and maturing dull stramineous or light brown laterally (vs. yellowish, occasionally light reddish-brown); in flower C. strigosus has shorter anthers (0.3-0.5 mm vs. 1 mm or more).

Origin/Endemic status: Native

Taxonomy Comments: Cyperus strigosus is a widespread and polymorphic taxon; see synonymy and C. strigosus var. stenolepis.

Synonymy ⓘ: = G, Lowe & Carter (2022c); > Cyperus praelongatus Steud. — S; < Cyperus strigosus L. — Ar, C, Can, ETx1, FNA23, GW1, Il, K4, Mi, Mo1, NcTx, NE, NS, NY, Pa, POWO, RAB, Tat, Tn, Tx, Va, W, WH3, WV; > Cyperus strigosus L. — S; > Cyperus strigosus L. var. robustior Britton — F; > Cyperus strigosus L. var. strigosus — F; Cyperus strigosus L. Basionym: Cyperus strigosus L. 1753

Links to other floras: < Cyperus strigosus - FNA23

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: FACW (name change)
• Great Plains: FACW (taxonomic split from wetland indicator species)
• Midwest: FACW (taxonomic split from wetland indicator species)
• Northcentral & Northeast: FACW (taxonomic split from wetland indicator species)