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Eutrochium dubium

(Willdenow ex Poiret) E. Lamont

Joe-pye Thoroughwort

G5Secure Found in 1 roadless area NatureServe Explorer →
G5SecureGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.158630
Element CodePDAST3P0K0
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 dubius(Willd. ex Poir.) King & H.E. Robins.Eupatorium dubiumWilld. ex Poir.
Other Common Names
Coastal Plain Joe-pyeweed (EN) coastalplain joepyeweed (EN) Eupatoire douteuse (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 Date2024-03-25
Change Date1984-04-24
Edition Date2024-03-25
Edition AuthorsSoteropoulos (2024)
Threat ImpactUnknown
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences> 300
Rank Reasons
Eutrochium dubium is a perennial herb found in wet, acidic habitats primarily in the coastal plain and also along rivers inland in eastern North America from Nova Scotia, Canada south to South Carolina, United States. It faces threats from development, rights-of-way maintenance activities, and recreational activities, but threats are not widely documented. With a large range extent and over 500 occurrences, this species is considered secure.
Range Extent Comments
Eutrochium dubium occurs on or near the Coastal Plain, near major rivers inland, in eastern North America from Nova Scotia, Canada south to southeastern South Carolina, United States (FNA 2006, Weakley and the Southeastern Flora Team 2023). Range extent was estimated to be over 650,000 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 500 occurrences rangewide (GBIF 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Threat Impact Comments
Although threats are not widely documented, Eutrochium dubium is threatened by development, powerline and roadside rights-of-way maintenance activities, roadside widening projects, recreational activities (especially ATV use), 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 dubium grows in "moist habitats, in sandy or gravelly, acid soils, open sun or partial shade" and "inland along major river systems" (FNA 2006), including swamp forests and pocosins (Weakley and the Southeast Flora Team 2023).
Palustrine Habitats
SCRUB-SHRUB WETLANDFORESTED WETLANDRiparian
Other Nations (2)
United StatesN5
ProvinceRankNative
GeorgiaS1Yes
New HampshireSNRYes
VermontSNRYes
New JerseyS4Yes
VirginiaS5Yes
West VirginiaSNANo
ConnecticutSNRYes
MarylandSNRYes
MassachusettsSNRYes
District of ColumbiaS5Yes
Rhode IslandSNRYes
North CarolinaS4Yes
PennsylvaniaS4Yes
New YorkS3Yes
South CarolinaSNRYes
DelawareS4Yes
MaineSNRYes
CanadaN2
ProvinceRankNative
Nova ScotiaS2Yes
Threat Assessments
ThreatScopeSeverityTiming
Unknown/undetermined———

—

Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (1)
North Carolina (1)
AreaForestAcres
Sheep Ridge AdditionCroatan National Forest5,808
References (7)
  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).
  7. Weakley, A.S., and Southeastern Flora Team. 2023. Flora of the southeastern United States. Edition of April 14, 2023. University of North Carolina Herbarium (NCU), North Carolina Botanical Garden, University of North Carolina, Chapel Hill. 2105 pp.