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Hieracium scabrum

Michx.

Rough Hawkweed

G5Secure Found in 4 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.129059
Element CodePDAST4W1C0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusHieracium
Other Common Names
Épervière scabre (FR) rough hawkweed (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 Date2024-05-15
Change Date1984-03-15
Edition Date2024-05-15
Edition AuthorsSoteropoulos (2024)
Threat ImpactUnknown
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank Reasons
Hieracium scabrum is a wide-ranging perennial herb in open woodlands and roadsides occurring in eastern and central North America from Nova Scotia west to Ontario in Canada and south to Georgia, west to Oklahoma in the United States. Threats include development, roadside maintenance activities, habitat succession, and invasive species. With a large range extent and number of occurrences, abundant habitat, broad habitat preferences, and no obvious intrinsic vulnerabilities, this species is considered secure.
Range Extent Comments
Hieracium scabrum occurs in eastern and central North America from Nova Scotia west to Ontario in Canada and south to Georgia, west to Oklahoma in the United States (FNA 2006). Range extent was estimated to be almost 4 million square kilometers using herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1993 and 2024 (GBIF 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Occurrences Comments
By applying a 1 km separation distance to herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1993 and 2024, it is estimated that there are over 600 occurrences rangewide (GBIF 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Threat Impact Comments
Although threats are not widely documented, this species is threatened by habitat loss and fragmentation (Southern Appalachian Species Viability Project 2002), including development, roadside maintenance activities, habitat succession, invasive species, and other threats in some places.
Ecology & Habitat

Habitat

Hieracium scabrum grows in "sandy soils, open, disturbed sites (fields, stream sides), wooded sites," including "dry forests, woodland margins, roadsides" (FNA 2006, Weakley and the Southeastern Flora Team 2024).
Terrestrial Habitats
Forest EdgeWoodland - HardwoodWoodland - ConiferWoodland - MixedOld field
Other Nations (2)
CanadaN5
ProvinceRankNative
New BrunswickS5Yes
Nova ScotiaS5Yes
QuebecS4Yes
OntarioS4Yes
Prince Edward IslandS4Yes
United StatesN5
ProvinceRankNative
KentuckyS4Yes
MarylandSNRYes
TennesseeS2Yes
South CarolinaS1Yes
MinnesotaSNRYes
MaineSNRYes
IllinoisSNRYes
OklahomaSNRYes
ConnecticutSNRYes
PennsylvaniaS5Yes
MassachusettsSNRYes
WisconsinSNRYes
West VirginiaS5Yes
New YorkS5Yes
MissouriSNRYes
MississippiSNRYes
VirginiaS5Yes
North CarolinaS3Yes
Rhode IslandSNRYes
MichiganSNRYes
OhioSNRYes
VermontS5Yes
GeorgiaS2Yes
IndianaSNRYes
New HampshireSNRYes
ArkansasS2Yes
IowaS4Yes
New JerseySNRYes
KansasS1Yes
DelawareS4Yes
District of ColumbiaSNRYes
Threat Assessments
ThreatScopeSeverityTiming
Unknown/undetermined———

—

Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (4)
Arkansas (1)
AreaForestAcres
Clifty CanyonOzark-St. Francis National Forest1,963
Maine (1)
AreaForestAcres
Caribou - Speckled ExtWhite Mountain National Forest5,988
West Virginia (1)
AreaForestAcres
East Fork Of GreenbrierMonongahela National Forest7,167
Wisconsin (1)
AreaForestAcres
09012 - Round Lake Study AreaChequamegon-Nicolet National Forest3,707
References (8)
  1. Flora of North America Editorial Committee (FNA). 2006a. Flora of North America north of Mexico. Vol. 19. Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York. xxiv + 579 pp.
  2. Global Biodiversity Information Facility (GBIF). 2024. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2024).
  3. iNaturalist. 2024. Online. Available: https://www.inaturalist.org (accessed 2024).
  4. 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.
  5. NatureServe. 2024. NatureServe Network Biodiversity Location Data. NatureServe, Arlington, Virginia.
  6. Southern Appalachian Species Viability Project. 2002. A partnership between the U.S. Forest Service-Region 8, Natural Heritage Programs in the Southeast, NatureServe, and independent scientists to develop and review data on 1300+ regionally and locally rare species in the Southern Appalachian and Alabama region. Database (Access 97) provided to the U.S. Forest Service by NatureServe, Durham, North Carolina.
  7. Southwest Environmental Information Network (SEINet). 2024. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2024).
  8. Weakley, A.S., and Southeastern Flora Team. 2024. Flora of the southeastern United States. Edition of March 4, 2024. University of North Carolina Herbarium (NCU), North Carolina Botanical Garden, University of North Carolina, Chapel Hill. 2203 pp.