Copy permalink to share
Cyperaceae
Cyperus

not marked as a favorite taxon 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.

Glossary (beta!)

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

Show in key(s)

Show parent genus | Show parent in key(s)

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)

Your browser does not support SVGs

Hover over a shape, letter, icon, or arrow on the map for definition or see the legend.

image #1 of Cyperus strigosus var. strigosus© Bruce A. Sorrie | Original Image ⭷
image #2 of Cyperus strigosus var. strigosus© Gary P. Fleming | Original Image ⭷
image #3 of Cyperus strigosus var. strigosus© Scott Ward | Original Image ⭷
image #4 of Cyperus strigosus var. strigosus© Erik Danielson source | Original Image ⭷
image #5 of Cyperus strigosus var. strigosus© Collectors SOS, spikelets disarticulated from inflorescence | Original Image ⭷
image #6 of Cyperus strigosus var. strigosus© Gary P. Fleming | Original Image ⭷
image #7 of Cyperus strigosus var. strigosus© Erik Danielson source | Original Image ⭷
image #8 of Cyperus strigosus var. strigosus© Erik Danielson source | Original Image ⭷

Feedback

See something missing or incorrect about Cyperus strigosus var. strigosus? Let us know here:
  1. Please include your name and if possible, email in case when need to clarify what you wrote.
  2. If you opt out of including email, please be as specific as possible (e.g., which photo is incorrect?)
  3. Please do not submit questions asking to identify plants or about horticultural topics (e.g., how do I control an invasive plant in my garden?). Instead, those questions can be submitted here for the Carolinas region only.
  4. Please do not send us feedback about unkeyed species as this work is ongoing.
  5. Please allow time for flora edits to show in our next data release. We greatly appreciate your feedback but may require extra time to research complicated taxonomic issues.

Horticultural Information

No horticultural data found for this taxon.