Eupatorium album

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White thoroughwort
Eupatorium album var album.png
Eupatorium album var album, 1913 botanical illustration.

Secure (NatureServe)[1]
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Eupatorieae
Genus: Eupatorium
Species: E. album
Binomial name
Eupatorium album
L.
Synonyms[2]

Eupatorium album, or white thoroughwort, is a herbaceous perennial plant in the sunflower family native from the eastern and southern United States, from eastern Texas to Connecticut, inland as far as Indiana.[3][4]

As with other members of the genus Eupatorium, Eupatorium album flowers with large numbers of small white heads. The flower heads have 4-5 disc florets each, but no ray florets.[5] The plant grows 50–100 cm (20–39 in) tall,[3] making it one of the shorter Eupatorium species.[5]

Eupatorium albumis capable of hybridizing with other Eupatorium species including Eupatorium sessilifolium and Eupatorium serotinum.[3] Its appearance is similar to Eupatorium altissimum, but differs in that the bracts (located at the base of the flower head) taper to a long point.[6]

Eupatorium album grows in dry, open areas such as power lines, old fields, and eroded slopes. It will not grow under a shady canopy, but can be found in some open woods such as pine barrens.[6]

Varieties[3]

References[edit]

  1. ^ "Eupatorium album". NatureServe Explorer. NatureServe. Retrieved 2010-09-12. 
  2. ^ The Plant List, Eupatorium album L.
  3. ^ a b c d "Eupatorium album". Flora of North America. 
  4. ^ Biota of North America Program 2014 county distribution map
  5. ^ a b "Eupatorium". Flora of North America. 
  6. ^ a b Rebecca W. Dolan (September 2004). "Conservation Assessment for White thoroughwort (Eupatorium album L.)" (PDF). United States Forest Service, Eastern Region of the Forest Service - Threatened and Endangered Species Program. 

Further reading[edit]

External links[edit]