Eupatorium leucolepis

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Secure (NatureServe)[1]
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Eupatorieae
Genus: Eupatorium
Species: E. leucolepis
Binomial name
Eupatorium leucolepis
(DC.) Torr. & A.Gray
  • Eupatorium glaucescens var. leucolepis DC.
  • Uncasia leucolepis (Torr. & A.Gray) Greene

Eupatorium leucolepis, commonly called justiceweed or white-bracted thoroughwort, is a herbaceous perennial plant in Asteraceae native from the eastern coastal United States, from New York to eastern Texas, with scattered populations inland as far as Kentucky and West Virginia.[3]

Eupatorium paludicola and Eupatorium novae-angliae[edit]

Eupatorium paludicola consists of diploids from clay soils of North Carolina and South Carolina. Until the early 21st century, they were classified in E. leucolepis. Eupatorium novae-angliae, known from a dozen or so sites in Massachusetts and Rhode Island, is a hybrid-derived allopolyploid of Eupatorium paludicola and Eupatorium perfoliatum. In the past it was known as E. leucolepis var. novae-angliae but, like E. paludicola, it does not appear to be closely related to E. leucolepis.[4][3][5]

It is self-sustaining, rather than being found only where both parents are present, so various authors since 1992 have proposed treating it as a distinct species.[6]


  1. ^ "Eupatorium leucolepis". NatureServe Explorer. NatureServe. Retrieved 2010-09-12. 
  2. ^ The Plant List, Eupatorium leucolepis (DC.) Torr. & A. Gray
  3. ^ a b "Eupatorium leucolepis". Flora of North America. 
  4. ^ Schilling, Edward E.; Leblond, Richard J.; Sorrie, Bruce A.; Weakley, Alan S. (2007). "Relationships Of The New England Boneset, Eupatorium Novae-Angliae (Asteraceae)". Rhodora. 109 (938): 145. doi:10.3119/0035-4902(2007)109[145:ROTNEB]2.0.CO;2. 
  5. ^ "Eupatorium leucolepis var. novae-angliae Fern., Taxonomic Serial number 528112". Integrated Taxonomic Information System. 
  6. ^ Ted Elliman (2001). "Eupatorium leucolepis (DC.) T. & G. var. novae-angliae Fern.: New England Boneset Conservation and Research Plan for New England" (PDF). New England Wild Flower Society.