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Cyperaceae
Cyperus

Cyperus squarrosus Linnaeus var. squarrosus. Common name: Awned Flatsedge. Phenology: May-Oct. Habitat: Moist depressions and seepages on granitic and other rocks, drawdown riverbanks, swale, shores, coastal rock barren, other moist disturbed sites, cracks in sidewalks and pavement. Distribution: Nearly cosmopolitan in distribution, in Old World and New World. The distribution of C. squarrosus var. squarrosus in precolonial North America is very uncertain.

Glossary (beta!)

ID notes: Similar to the closely related C. granitophilus (see key).

Origin/Endemic status: Native

Taxonomy Comments: Lowe & Carter (2023) interpret C. squarrosus as having three varieties, var. squarrosus, var. runyonii, and var. graniticus.

Synonymy ⓘ: = POWO, Lowe & Carter (2023); = Cyperus aristatus Rottb. var. aristatus — Tx; = n/a — Tat; < Cyperus aristatus Rottb. — GW1, RAB; < Cyperus inflexus Muhl. — F, S, WV; < Cyperus squarrosus L. — Ar, C, Can, ETx1, FNA23, GrPl, Il, K4, Mex, Mi, Mo1, NcTx, NS, Pa, Tn, Va, WH3. Basionym: Cyperus squarrosus L. 1756

Links to other floras: < Cyperus squarrosus - FNA23

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Wetland Indicator Status:

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

Heliophily ⓘ: 9

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image of plant© Paul Marcum source | Original Image ⭷
image of plant© Paul Marcum source | Original Image ⭷
image of plant© Paul Marcum source | Original Image ⭷
image of plant© Paul Marcum source | Original Image ⭷
image of plant© Paul Marcum source | Original Image ⭷
image of plant© Paul Marcum source | Original Image ⭷

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Horticultural Information

No horticultural data found for this taxon.