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Carex squarrosa

L.

Squarrose Sedge

G5Secure Found in 1 roadless area NatureServe Explorer →
G5SecureGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.145886
Element CodePMCYP03CU0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderCyperales
FamilyCyperaceae
GenusCarex
Other Common Names
Carex squarreux (FR) squarrose sedge (EN)
Concept Reference
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2024-02-26
Change Date2024-02-26
Edition Date2024-03-04
Edition AuthorsEberly (2024)
Threat ImpactUnknown
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences> 300
Rank Reasons
Carex squarrosa is a wide ranging perennial sedge occurring across much of the eastern United States but also Ontario, Canada. With a large range extent, over 600 occurrences, and abundant habitat with relatively broad habitat preferences, this species is considered secure.
Range Extent Comments
Carex squarrosa is widespread in the eastern United States and extends into Ontario, Canada. Range extent was estimated using herbarium specimens and photo-based observations collected between 1993 and 2024 (GBIF 2024, iNaturalist 2024).
Occurrences Comments
This species is common over large areas of its range (Weakley and Southeastern Flora Team 2023). By applying a 1 km separation distance to herbarium records and photo-based observations documented between 1993 and 2024, it is estimated that there are over 600 occurrences rangewide (GBIF 2024, iNaturalist 2024).
Ecology & Habitat

Habitat

This species grows in wet woods, bottomland forests, forest edges, and meadows (FNA 2002, Weakley and Southeastern Flora Team 2023).
Terrestrial Habitats
Forest/WoodlandForest EdgeGrassland/herbaceous
Palustrine Habitats
HERBACEOUS WETLANDFORESTED WETLAND
Other Nations (2)
CanadaN2
ProvinceRankNative
OntarioS2Yes
United StatesN5
ProvinceRankNative
KansasS1Yes
GeorgiaS3Yes
New JerseyS5Yes
OhioSNRYes
MinnesotaSNRYes
MichiganS1Yes
South CarolinaS2Yes
KentuckyS5Yes
New YorkS5Yes
MarylandSNRYes
PennsylvaniaS5Yes
VirginiaS4Yes
IllinoisS4Yes
OklahomaSNRYes
MississippiS5Yes
LouisianaSNRYes
West VirginiaS4Yes
IowaS3Yes
WisconsinSNRYes
AlabamaSNRYes
TennesseeSNRYes
ConnecticutS3Yes
NebraskaSNANo
North CarolinaS3Yes
MissouriSNRYes
IndianaS5Yes
ArkansasS5Yes
District of ColumbiaSNRYes
Rhode IslandSNRYes
DelawareS3Yes
MassachusettsS1Yes
Threat Assessments
ThreatScopeSeverityTiming
Unknown/undetermined———

—

Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (1)
Virginia (1)
AreaForestAcres
Mill MountainGeorge Washington National Forest10,840
References (6)
  1. Dow Cullina, M., B. Connolly, B. Sorrie, and P. Somers. 2011. The Vascular Plants of Massachusetts: A County Checklist First Revision. Massachusetts Natural Heritage & Endangered Species Program. Massachusetts Division of Fisheries and Wildlife. Westborough, MA.
  2. Flora of North America Editorial Committee (FNA). 2002b. Flora of North America north of Mexico. Vol. 23. Magnoliophyta: Commelinidae (in part): Cyperaceae. Oxford Univ. Press, New York. xxiv + 608 pp.
  3. Global Biodiversity Information Facility (GBIF). 2024. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2024).
  4. iNaturalist. 2024. Online. Available: https://www.inaturalist.org (accessed 2024).
  5. Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
  6. Weakley, A.S., and Southeastern Flora Team. 2023. Flora of the southeastern United States. Edition of April 14, 2023. University of North Carolina Herbarium (NCU), North Carolina Botanical Garden, University of North Carolina, Chapel Hill. 2105 pp.