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Toxicodendron radicans

(L.) Kuntze

Eastern Poison-ivy

G5Secure Found in 104 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.152689
Element CodePDANA0B020
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderSapindales
FamilyAnacardiaceae
GenusToxicodendron
Synonyms
Rhus radicansL.
Other Common Names
eastern poison-ivy (EN) Herbe à puce (FR) Poison-ivy (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.
Taxonomic Comments
This record represents the narrow concept of Toxicodendron radicans not including T. rydbergii following Kartesz (1994). In contrast, FNA (vol. 13, 2024) treats T. rydbergii as a variety of T. radicans, T. radicans var. rydbergii.
Conservation Status
Rank MethodExpertise without calculation
Review Date2016-05-11
Change Date1983-07-21
Edition Date1983-07-21
Edition AuthorsEdmondson, L.
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences81 to >300
Rank Reasons
T. radicans is highly abundant (occurs all along the east- ern, southern and southwestern states), was and is not federally listed as threatened or endangered, and suffers no decrease in population size.
Range Extent Comments
Occurs in most of the 48 contiguous states and extends north into Canadian regions.
Occurrences Comments
Probably 100's to 100,000's of EO's are present in the states this species is known to exist.
Threat Impact Comments
Poison ivy adapts to human civilization; probably more abun- dant than in 1492.
Ecology & Habitat

Habitat

Open woods, pinelands and meadows, to roadsides and waste areas, except in low peaty soil or high mountains.
Other Nations (2)
United StatesN5
ProvinceRankNative
TexasSNRYes
ArizonaSNRYes
MissouriSNRYes
OhioSNRYes
WisconsinSNRYes
IllinoisSNRYes
ArkansasSNRYes
MichiganSNRYes
LouisianaSNRYes
DelawareS5Yes
OklahomaSNRYes
KansasSNRYes
ConnecticutSNRYes
AlabamaSNRYes
MinnesotaSNRYes
South CarolinaSNRYes
District of ColumbiaS5Yes
New YorkS5Yes
IndianaS5Yes
West VirginiaS5Yes
MississippiSNRYes
Rhode IslandSNRYes
New HampshireSNRYes
VermontS5Yes
North CarolinaS5Yes
New JerseySNRYes
FloridaS4Yes
NebraskaSNRYes
VirginiaS5Yes
MarylandSNRYes
GeorgiaSNRYes
PennsylvaniaS5Yes
South DakotaSNRYes
MassachusettsSNRYes
KentuckySNRYes
MaineSNRYes
TennesseeSNRYes
IowaS5Yes
CanadaNNR
ProvinceRankNative
Nova ScotiaSNRYes
OntarioSNRYes
AlbertaSNRYes
QuebecSNRYes
Prince Edward IslandSNRYes
Island of NewfoundlandSNANo
New BrunswickSNRYes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (104)
Alabama (2)
AreaForestAcres
Blue MountainTalladega National Forest4,986
Oakey MountainTalladega National Forest6,129
Arizona (11)
AreaForestAcres
Butterfly Roadless AreaCoronado National Forest42,296
Cdo WsaCoronado National Forest1,955
ChiricahuaCoronado National Forest76,876
GaliuroCoronado National Forest28,333
Happy ValleyCoronado National Forest7,972
Lower San FranciscoApache-Sitgreaves National Forests59,310
MazatzalTonto National Forest16,942
SunsetApache-Sitgreaves National Forests28,948
TumacacoriCoronado National Forest44,594
Upper Romero WsrCoronado National Forest150
WhetstoneCoronado National Forest20,728
Arkansas (7)
AreaForestAcres
Bear MountainOuachita National Forest1,910
Dismal CreekOzark-St. Francis National Forest9,160
East ForkOzark-St. Francis National Forest13,037
Gee CreekOzark-St. Francis National Forest7,957
Little BlakelyOuachita National Forest3,342
Pedestal RocksOzark-St. Francis National Forest21,957
PenhookOzark-St. Francis National Forest6,566
Florida (1)
AreaForestAcres
Alexander Springs CreekOcala National Forest2,954
Georgia (9)
AreaForestAcres
Ben GapChattahoochee National Forest1,292
Ellicott Rock AdditionChattahoochee National Forest690
Helton CreekChattahoochee National Forest2,348
Indian Grave GapChattahoochee National Forest1,020
Kelly RidgeChattahoochee National Forest8,325
Lance CreekChattahoochee National Forest9,025
Miller CreekChattahoochee National Forest701
Pink KnobChattahoochee National Forest12,127
Rocky MountainChattahoochee National Forest4,269
Idaho (1)
AreaForestAcres
Bear CreekCaribou-Targhee National Forest118,582
Illinois (1)
AreaForestAcres
Ripple HollowShawnee National Forest3,788
Kentucky (1)
AreaForestAcres
WolfpenDaniel Boone National Forest2,835
Mississippi (1)
AreaForestAcres
Sandy Creek Rare Ii AreaHomochitto National Forest2,620
North Carolina (19)
AreaForestAcres
Bald MountainPisgah National Forest11,085
Balsam ConePisgah National Forest10,591
Catfish Lake NorthCroatan National Forest11,299
Cheoah BaldNantahala National Forest7,795
Craggy MountainPisgah National Forest2,657
Dobson KnobPisgah National Forest6,111
Graveyard Ridge (addition)Pisgah National Forest1,958
Jarrett CreekPisgah National Forest7,485
Linville Gorge AdditionPisgah National Forest2,809
Lost CovePisgah National Forest5,944
Middle Prong AdditionPisgah National Forest1,852
Pond Pine BCroatan National Forest2,961
Sam Knob (addition)Pisgah National Forest2,576
Sheep Ridge AdditionCroatan National Forest5,808
South Mills RiverPisgah National Forest8,588
Tusquitee BaldNantahala National Forest13,670
Wesser BaldNantahala National Forest4,061
Wilson CreekPisgah National Forest4,863
Yellowhammer Branch (add.)Nantahala National Forest1,255
Oklahoma (1)
AreaForestAcres
Beech CreekOuachita National Forest8,303
Pennsylvania (1)
AreaForestAcres
Allegheny FrontAllegheny National Forest7,430
South Carolina (1)
AreaForestAcres
Ellicott Rock 2Sumter National Forest517
South Dakota (1)
AreaForestAcres
Indian CreekBuffalo Gap National Grassland24,666
Tennessee (11)
AreaForestAcres
Bald MountainCherokee National Forest11,743
Bald River Gorge AdditionCherokee National Forest1,728
Beaver Dam CreekCherokee National Forest5,070
Big Laurel Branch AdditionCherokee National Forest5,577
Brushy RidgeCherokee National Forest7,469
Devil's BackboneCherokee National Forest4,287
Flint Mill GapCherokee National Forest9,494
London Bridge BranchCherokee National Forest3,387
Sampson Mountain AdditionCherokee National Forest3,064
Stone MountainCherokee National Forest5,367
Sycamore CreekCherokee National Forest6,984
Texas (3)
AreaForestAcres
Big CreekNational Forests in Texas1,447
Big WoodsNational Forests in Texas1,320
Little Lake CreekNational Forests in Texas596
Virginia (23)
AreaForestAcres
Adams PeakGeorge Washington National Forest7,135
Bear CreekJefferson National Forest18,274
Beards MountainGeorge Washington National Forest7,505
Beartown Addition BJefferson National Forest2,985
Beaver Dam CreekJefferson National Forest1,135
Brushy MountainJefferson National Forest4,168
Gum RunGeorge Washington National Forest12,620
Kelley MountainGeorge Washington National Forest7,590
Little AlleghanyGeorge Washington National Forest10,215
Long SpurJefferson National Forest6,417
New London Bridge BranchJefferson National Forest844
North MountainJefferson National Forest8,377
Northern MassanuttenGeorge Washington National Forest9,444
Oak KnobGeorge Washington National Forest10,882
Oliver MountainGeorge Washington National Forest13,090
Peters Mountain Addition BJefferson National Forest2,909
Ramseys Draft AdditionGeorge Washington National Forest12,781
Saint Marys AdditionGeorge Washington National Forest1,454
Seng MountainJefferson National Forest6,428
Southern MassanuttenGeorge Washington National Forest11,985
The PriestGeorge Washington National Forest5,737
Three RidgesGeorge Washington National Forest4,745
Three SistersGeorge Washington National Forest8,149
West Virginia (10)
AreaForestAcres
Canaan LoopMonongahela National Forest7,867
Dolly Sods Roaring PlainMonongahela National Forest13,392
Dry ForkMonongahela National Forest657
Little MountainMonongahela National Forest8,172
Marlin MountainMonongahela National Forest9,344
Mcgowan MountainMonongahela National Forest10,504
Middle MountainMonongahela National Forest19,020
North Mountain HopevilleMonongahela National Forest6,525
Seneca CreekMonongahela National Forest22,287
Spice RunMonongahela National Forest6,251
References (2)
  1. Flora of North America Editorial Committee (FNA). 2024. Flora of North America north of Mexico. Vol. 13. Magnoliophyta: Geraniaceae to Apiaceae. Oxford Univ. Press, New York. xxiv + 566 pp.
  2. 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.