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Eutrochium purpureum

(L.) E. Lamont

Sweet Joe-pyeweed

G5Secure Found in 39 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.127981
Element CodePDAST3P1G0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusEutrochium
Synonyms
Eupatoriadelphus purpureus(L.) King & H.E. Robins.Eupatorium purpureumL.
Other Common Names
Eupatoire pourpre (FR) Purple Joe-pyeweed (EN) sweetscented joepyeweed (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 Date2024-08-13
Change Date1984-04-24
Edition Date2024-08-13
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
Eutrochium purpureum is a perennial herb found in a variety of mesic woodland habitats in eastern and central North America from Ontario, Canada and in the United States from New Hampshire west to Minnesota and Nebraska south to Florida and west to Louisiana. Identification to variety is challenging since E. purpureum is morphologically variable and is known to hybridize with all other North American species of Eutrochium. It potentially faces threats from development, logging, deer browse, rights-of-way maintenance activities, invasive species, and recreational activities, but threats are not widely documented. With a large range extent and number of occurrences, this species is considered secure.
Range Extent Comments
Eutrochium purpureum occurs in eastern and central North America from Ontario, Canada and in the United States from New Hampshire west to southeastern Minnesota and eastern Nebraska south to Florida and west to Louisiana (FNA 2006). Range extent was estimated to be over 3.5 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). See individual entries for distribution details about the three varieties.
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 1,500 occurrences rangewide (GBIF 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Threat Impact Comments
Although threats are not widely documented, Eutrochium purpureum is potentially threatened by development, logging, deer browse, powerline and roadside rights-of-way maintenance activities, roadside widening projects, invasive species, recreational activities, and other threats in some places, though there is insufficient data, including anecdotal accounts, to understand scope and severity of threats for this species.
Ecology & Habitat

Habitat

Eutrochium purpureum grows in rich or rocky, open deciduous woodlands, woodland borders, oak savannas, and thickets, wooded ravines, streambanks, near bases of slopes bordering wet grounds, roadsides, in partial or deep shade, sometimes on steep slopes (FNA 2006, Weakley and the Southeastern Flora Team 2024).
Terrestrial Habitats
Forest/WoodlandForest - HardwoodForest - MixedForest EdgeWoodland - HardwoodWoodland - MixedShrubland/chaparralSavanna
Palustrine Habitats
Riparian
Other Nations (2)
CanadaN4
ProvinceRankNative
OntarioS4Yes
United StatesN5
ProvinceRankNative
Rhode IslandSNRYes
TennesseeSNRYes
New HampshireSNRYes
IndianaS4Yes
MaineSNRYes
South CarolinaSNRYes
LouisianaS1Yes
MassachusettsSNRYes
FloridaSNRYes
MinnesotaSNRYes
MarylandSNRYes
New JerseySNRYes
VermontS2Yes
IllinoisSNRYes
OhioSNRYes
KentuckySNRYes
District of ColumbiaSNRYes
West VirginiaS5Yes
MichiganSNRYes
ConnecticutSNRYes
AlabamaSNRYes
WisconsinSNRYes
ArkansasSNRYes
OklahomaSNRYes
NebraskaSNRYes
MissouriSNRYes
South DakotaSNRYes
MississippiS4Yes
DelawareSNRYes
New YorkSNRYes
North CarolinaS5Yes
VirginiaS5Yes
IowaS5Yes
PennsylvaniaS5Yes
KansasSNRYes
GeorgiaS5Yes
Threat Assessments
ThreatScopeSeverityTiming
Unknown/undetermined———

—

Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (39)
Arkansas (2)
AreaForestAcres
Clifty CanyonOzark-St. Francis National Forest1,963
Dismal CreekOzark-St. Francis National Forest9,160
Georgia (4)
AreaForestAcres
Boggs CreekChattahoochee National Forest2,073
Cedar MountainChattahoochee National Forest1,083
Pink KnobChattahoochee National Forest12,127
Sarah's CreekChattahoochee National Forest6,888
North Carolina (10)
AreaForestAcres
Bald MountainPisgah National Forest11,085
BearwallowPisgah National Forest4,113
Cherry Cove (addition)Nantahala National Forest836
Craggy MountainPisgah National Forest2,657
Graveyard Ridge (addition)Pisgah National Forest1,958
Harper CreekPisgah National Forest7,325
Laurel MountainPisgah National Forest5,683
Lost CovePisgah National Forest5,944
Sam Knob (addition)Pisgah National Forest2,576
Woods MountainPisgah National Forest9,602
Oklahoma (1)
AreaForestAcres
Beech CreekOuachita National Forest8,303
Pennsylvania (1)
AreaForestAcres
Allegheny FrontAllegheny National Forest7,430
Tennessee (3)
AreaForestAcres
Bald MountainCherokee National Forest11,743
Flint Mill GapCherokee National Forest9,494
Sampson Mountain AdditionCherokee National Forest3,064
Vermont (1)
AreaForestAcres
Griffith Lake 09084Green Mountain and Finger Lakes National Forests1,833
Virginia (10)
AreaForestAcres
Adams PeakGeorge Washington National Forest7,135
Beards MountainGeorge Washington National Forest7,505
Elliott KnobGeorge Washington National Forest9,380
Gum RunGeorge Washington National Forest12,620
Hoop HoleJefferson National Forest4,652
Laurel ForkGeorge Washington National Forest9,967
Mt. PleasantGeorge Washington National Forest8,933
North MountainJefferson National Forest8,377
Northern MassanuttenGeorge Washington National Forest9,444
The PriestGeorge Washington National Forest5,737
West Virginia (7)
AreaForestAcres
Cranberry AdditionMonongahela National Forest11,123
Cranberry Glades Botanical AreaMonongahela National Forest785
Dry ForkMonongahela National Forest657
Falls Of Hills CreekMonongahela National Forest6,925
Mcgowan MountainMonongahela National Forest10,504
Seneca CreekMonongahela National Forest22,287
Tea Creek MountainMonongahela National Forest8,295
References (6)
  1. Flora of North America Editorial Committee (FNA). 2006c. Flora of North America north of Mexico. Vol. 21. Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford Univ. Press, New York. xxii + 616 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).