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Toxicodendron diversilobum

(Torr. & Gray) Greene

Western Poison-oak

G5Secure Found in 174 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.161752
Element CodePDANA0B010
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderSapindales
FamilyAnacardiaceae
GenusToxicodendron
Synonyms
Rhus diversilobaTorr. & Gray
Other Common Names
Pacific Poison-oak (EN) Pacific poison-oak (EN) Sumac de l'Ouest (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
Review Date1999-11-11
Change Date1999-11-11
Ecology & Habitat
Other Nations (2)
United StatesN5
ProvinceRankNative
NevadaSUYes
OregonSNRYes
WashingtonSNRYes
CaliforniaSNRYes
CanadaN3
ProvinceRankNative
British ColumbiaS3Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (174)
California (149)
AreaForestAcres
AgnewSequoia National Forest9,561
AntimonyLos Padres National Forest40,911
Arroyo SecoAngeles National Forest4,703
BackboneShasta-Trinity National Forest11,466
Bald RockPlumas National Forest4,675
Barker ValleyCleveland National Forest11,940
Bear MountainLos Padres National Forest913
Bell QuinbyShasta-Trinity National Forest11,556
Big Butte ShinboneMendocino National Forest4,265
Big RocksLos Padres National Forest11,866
Black ButteMendocino National Forest15,461
Black ButteLos Padres National Forest5,116
Black MountainLos Padres National Forest16,818
Black Mtn.Sequoia National Forest15,102
Bonanza KingShasta-Trinity National Forest16,402
Bucks LakePlumas National Forest680
Cahuilla MountainSan Bernardino National Forest6,952
CajonSan Bernardino National Forest7,548
CalienteCleveland National Forest5,953
CamuesaLos Padres National Forest8,209
Castle Crags AShasta-Trinity National Forest113
Castle Crags BShasta-Trinity National Forest1,619
Chalk PeakLos Padres National Forest7,472
ChannellSequoia National Forest45,429
ChicoSequoia National Forest39,836
ChinquapinShasta-Trinity National Forest22,040
Chips CreekLassen National Forest29,089
Chips CreekPlumas National Forest12,940
Circle MountainSan Bernardino National Forest6,375
City CreekSan Bernardino National Forest9,997
ColdwaterCleveland National Forest8,402
Cow CreekSix Rivers National Forest1,271
Cow CreekShasta-Trinity National Forest22,627
Crystal CreekSan Bernardino National Forest6,783
Cub CreekLassen National Forest8,643
Cucamonga AAngeles National Forest1,249
Cucamonga BSan Bernardino National Forest11,933
Cucamonga CSan Bernardino National Forest4,106
Cutca ValleyCleveland National Forest14,530
CuyamaLos Padres National Forest19,631
De La GuerraLos Padres National Forest5,418
Deep CreekSan Bernardino National Forest23,869
Dennison PeakSequoia National Forest6,293
Devil GulchSierra National Forest30,490
Devils RockShasta-Trinity National Forest16,209
DiableLos Padres National Forest19,597
Dinkey LakesSierra National Forest34,171
Dry LakesLos Padres National Forest17,043
EagleShasta-Trinity National Forest6,553
Eagle PeakCleveland National Forest6,481
East GirardShasta-Trinity National Forest27,894
East YubaTahoe National Forest17,968
Ferguson RidgeSierra National Forest6,104
Fish CanyonAngeles National Forest29,886
Fisher Gulch BShasta-Trinity National Forest4,791
Fox MountainLos Padres National Forest52,072
Garcia MountainLos Padres National Forest7,850
Greenhorn CreekSequoia National Forest28,226
GriderKlamath National Forest10,647
Grizzly PeakPlumas National Forest6,222
Grouse LakesTahoe National Forest19,085
Hixon FlatSan Bernardino National Forest8,095
Horse Creek RidgeSan Bernardino National Forest8,969
Horseshoe SpringsLos Padres National Forest14,089
IshiLassen National Forest21,805
JohnsonKlamath National Forest10,652
JuncalLos Padres National Forest12,289
KangarooKlamath National Forest40,617
KellySix Rivers National Forest5,195
Kettle Mtn.Shasta-Trinity National Forest4,589
Kings RiverSierra National Forest52,999
La BreaLos Padres National Forest14,031
La PanzaLos Padres National Forest4,954
LaddCleveland National Forest5,300
Little French CShasta-Trinity National Forest11,529
Little PineLos Padres National Forest1,315
Lpoor CanyonLos Padres National Forest13,762
Machesna MountainLos Padres National Forest12,271
Magic MountainAngeles National Forest15,542
Malduce BuckhornLos Padres National Forest14,177
ManzanaLos Padres National Forest2,101
MatilijaLos Padres National Forest5,218
Middle ForkPlumas National Forest29,278
Middle YubaTahoe National Forest7,379
Mill CreekLassen National Forest7,587
Mill CreekSequoia National Forest27,643
Mill PeakSan Bernardino National Forest7,884
Mirada PimeLos Padres National Forest13,302
MonarchSierra National Forest697
Monkey CreekSix Rivers National Forest9,017
MonoLos Padres National Forest28,141
MosesSequoia National Forest22,077
Mt. Shasta BShasta-Trinity National Forest2,809
No NameCleveland National Forest4,897
NordhoffLos Padres National Forest12,031
North Fork American RiverTahoe National Forest38,495
North Fork Middle Fork American RiverTahoe National Forest11,245
North Fork SmithSix Rivers National Forest37,898
North MountainStanislaus National Forest7,856
Oat Mtn.Sequoia National Forest12,223
Orleans Mtn.Klamath National Forest49,090
Orleans Mtn. BSix Rivers National Forest17,183
Orleans Mtn. CSix Rivers National Forest15,589
PacksaddleSix Rivers National Forest3,862
PantherShasta-Trinity National Forest12,016
Pilot CreekSix Rivers National Forest9,192
Pine CreekCleveland National Forest503
Pleasant ViewAngeles National Forest26,395
PortugueseKlamath National Forest18,915
Raywood Flat BSan Bernardino National Forest11,373
Red MountainAngeles National Forest8,034
Reister CanyonMendocino National Forest5,897
RinconSequoia National Forest54,610
Rouse HillSan Bernardino National Forest13,745
RussianKlamath National Forest21,771
Salt CreekAngeles National Forest11,022
San DimasAngeles National Forest7,160
San Gabriel AddAngeles National Forest2,527
San SevaineSan Bernardino National Forest6,866
Santa CruzLos Padres National Forest21,182
Sawmill - BadlandsLos Padres National Forest51,362
Sespe - FrazierLos Padres National Forest106,910
Sespe - FrazierAngeles National Forest4,254
Sheep MountainAngeles National Forest21,098
Sill HillCleveland National Forest5,294
SiskiyouKlamath National Forest54,039
Siskiyou ASix Rivers National Forest1,017
Siskiyou BSix Rivers National Forest18,871
Skeleton GladeMendocino National Forest9,237
Slate Mtn.Sequoia National Forest12,299
SnoozerKlamath National Forest23,414
Snow MountainMendocino National Forest14,457
SoliderSix Rivers National Forest14,918
Strawberry PeakAngeles National Forest7,245
Tepusquet PeakLos Padres National Forest5,821
TequepisLos Padres National Forest9,080
ThatcherMendocino National Forest16,652
Thomes CreekMendocino National Forest16,616
Tom MartinKlamath National Forest9,031
TrabucoCleveland National Forest23,341
Trumbull PeakStanislaus National Forest6,164
TuleAngeles National Forest9,861
UnderwoodSix Rivers National Forest6,591
Weaver BallyShasta-Trinity National Forest829
West GirardShasta-Trinity National Forest37,516
WestforkAngeles National Forest4,407
White LedgeLos Padres National Forest18,632
WildhorseCleveland National Forest1,483
WoodpeckerSequoia National Forest11,936
Idaho (1)
AreaForestAcres
Bear CreekCaribou-Targhee National Forest118,582
Nevada (1)
AreaForestAcres
Rose - Whites CanyonHumboldt-Toiyabe National Forest2,568
Oregon (16)
AreaForestAcres
Cougar BluffUmpqua National Forest5,574
EagleMt. Hood National Forest16,841
ElkhornWillamette National Forest9,380
FairviewUmpqua National Forest7,417
French Pete (a)Willamette National Forest1,668
Gordon MeadowsWillamette National Forest9,463
LarchMt. Hood National Forest12,961
Limpy RockUmpqua National Forest6,782
Mclennon MountainWillamette National Forest8,085
Menagerie (rooster Rock)Willamette National Forest374
North KalmiopsisSiskiyou National Forests91,560
Roaring RiverMt. Hood National Forest27,316
Shasta CostaSiskiyou National Forests14,420
South KalmiopsisSiskiyou National Forests104,477
Williams CreekUmpqua National Forest5,844
WoahinkSiuslaw National Forest5,309
South Dakota (1)
AreaForestAcres
Indian CreekBuffalo Gap National Grassland24,666
Texas (1)
AreaForestAcres
Big CreekNational Forests in Texas1,447
Washington (5)
AreaForestAcres
Bear CreekGifford Pinchot National Forest7,980
Jefferson RidgeOlympic National Forest6,512
Jupiter RidgeOlympic National Forest10,148
LightningOlympic National Forest7,179
Mt. BaldyOlympic National Forest3,557
References (1)
  1. 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.