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Home/Species/ Panicled Hawkweed

Hieracium paniculatum

L.

Panicled Hawkweed

G5Secure Found in 39 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.156872
Element CodePDAST4W120
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
Allegheny hawkweed (EN) Allegheny Hawkweed (EN) Épervière paniculée (FR)
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 Date1984-05-16
Edition Date2024-05-15
Edition AuthorsSoteropoulos (2024)
Threat ImpactUnknown
Range Extent200,000 to >2,500,000 square km (about 80,000 to >1,000,000 square miles)
Number of Occurrences> 300
Rank Reasons
Hieracium paniculatum is a wide-ranging perennial herb in open woodlands and roadsides occurring in eastern North America from Nova Scotia west to Ontario in Canada and south to Georgia and Alabama in the United States. Threats include development, roadside maintenance activities, logging, 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 paniculatum occurs in eastern North America from Nova Scotia west to Ontario in Canada and south to Georgia and Alabama in the United States (FNA 2006). Range extent was estimated to be over 1.5 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 potentially threatened by development, roadside maintenance activities, logging, invasive species, and other threats in some places.
Ecology & Habitat

Habitat

Hieracium paniculatum grows in openings in dry to mesic forests, especially along dirt roads (FNA 2006, Weakley and the Southeastern Flora Team 2024).
Terrestrial Habitats
Forest EdgeWoodland - HardwoodWoodland - ConiferWoodland - Mixed
Other Nations (2)
United StatesN5
ProvinceRankNative
Rhode IslandSNRYes
MichiganS2Yes
TennesseeSNRYes
ConnecticutSNRYes
New JerseyS4Yes
VermontS5Yes
West VirginiaS5Yes
KentuckyS5Yes
MarylandSNRYes
MaineSNRYes
New YorkS5Yes
South CarolinaS2Yes
WisconsinSNRYes
GeorgiaSNRYes
AlabamaSNRYes
DelawareS5Yes
District of ColumbiaSNRYes
New HampshireSNRYes
OhioSNRYes
PennsylvaniaS5Yes
MassachusettsSNRYes
North CarolinaS4Yes
IndianaSNRYes
VirginiaS5Yes
CanadaN3
ProvinceRankNative
Nova ScotiaS3Yes
QuebecS3Yes
New BrunswickS1Yes
OntarioS2Yes
Threat Assessments
ThreatScopeSeverityTiming
Unknown/undetermined———

—

Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (39)
Georgia (5)
AreaForestAcres
Boggs CreekChattahoochee National Forest2,073
Indian Grave GapChattahoochee National Forest1,020
Kelly RidgeChattahoochee National Forest8,325
Pink KnobChattahoochee National Forest12,127
Rocky MountainChattahoochee National Forest4,269
Maine (1)
AreaForestAcres
Caribou - Speckled ExtWhite Mountain National Forest5,988
New Hampshire (2)
AreaForestAcres
Carr MountainWhite Mountain National Forest17,110
Wild RiverWhite Mountain National Forest46,878
North Carolina (12)
AreaForestAcres
Balsam ConePisgah National Forest10,591
Big Indian (addition)Nantahala National Forest1,155
Graveyard Ridge (addition)Pisgah National Forest1,958
Jarrett CreekPisgah National Forest7,485
Laurel MountainPisgah National Forest5,683
Linville Gorge AdditionPisgah National Forest2,809
Lost CovePisgah National Forest5,944
Mackey MountainPisgah National Forest5,934
Overflow CreekNantahala National Forest3,379
Sam Knob (addition)Pisgah National Forest2,576
Wesser BaldNantahala National Forest4,061
Woods MountainPisgah National Forest9,602
Pennsylvania (1)
AreaForestAcres
Tracy RidgeAllegheny National Forest9,034
Tennessee (2)
AreaForestAcres
Beaver Dam CreekCherokee National Forest5,070
Flint Mill GapCherokee National Forest9,494
Vermont (1)
AreaForestAcres
Wilder Mountain 09082Green Mountain and Finger Lakes National Forests8,759
Virginia (13)
AreaForestAcres
Beards MountainGeorge Washington National Forest7,505
Beaver Dam CreekJefferson National Forest1,135
Elliott KnobGeorge Washington National Forest9,380
Gum RunGeorge Washington National Forest12,620
Laurel ForkGeorge Washington National Forest9,967
Little RiverGeorge Washington National Forest27,292
Mt. PleasantGeorge Washington National Forest8,933
North MountainJefferson National Forest8,377
Northern MassanuttenGeorge Washington National Forest9,444
Oak KnobGeorge Washington National Forest10,882
SkidmoreGeorge Washington National Forest5,641
The PriestGeorge Washington National Forest5,737
Three RidgesGeorge Washington National Forest4,745
West Virginia (2)
AreaForestAcres
Dry River (WV)George Washington National Forest7,331
Middle MountainMonongahela National Forest19,020
References (7)
  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. Southwest Environmental Information Network (SEINet). 2024. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2024).
  7. 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.