Ambrosia tomentosa

Ambrosia tomentosa, the skeletonleaf bur ragweed,[2] silverleaf povertyweed, or skeleton-leaf bursage,[3][4][5] is a North American species of perennial plants in the (aster family).[6]

Ambrosia tomentosa
Skeletonleaf bur ragweed
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Ambrosia
Species:
A. tomentosa
Binomial name
Ambrosia tomentosa
Synonyms[1]
  • Franseria discolor Nutt.
  • Franseria exigua Wawra
  • Gaertneria discolor (Nutt.) Kuntze
  • Gaertneria tomentosa (Nutt.) Heller
  • Gaertneria tomentosa (Nutt.) A.Nelson
  • Xanthidium discolor (Nutt.) Delpino
  • Franseria tomentosa (Nutt.) A.Nelson, not A. Gray

Skeletonleaf bur ragweed is native to the west-central part of the United States, primarily the western Great Plains, the Colorado Plateau, and eastern Great Basin.[7][8]

It is considered a noxious weed in several states.[5][9][10]

Description

Ambrosia tomentos grows up to 3 feet (91 cm) tall. The deeply lobed hairy leaves grow to 5 inches (12.7 cm) and have toothed margins. Flowers are small and yellow and produce spined 2-seeded burrs. In addition to seeds it can also reproduce via its widely spreading roots.[11][6]

References
  1. The Plant List Ambrosia tomentosa Nutt.
  2. Eastern Colorado Wildflowers, Ambrosia tomentosa (Skeletonleaf Burr Ragweed or Skeletonleaf Bursage)
  3. Center for Invasive Species and Ecosystem Health, skeletonleaf bursage Ambrosia tomentosa Nutt.
  4. "Oregon State University, StreamWebs, Skeletonleaf bursage (Ambrosia tomentosa)". Archived from the original on 2016-03-04. Retrieved 2015-05-17.
  5. "Ambrosia tomentosa". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2010-03-25.
  6. Flora of North America Vol. 21 Page 17 Ambrosia tomentosa Nuttall, Gen. N. Amer. Pl. 2: 186. 1818.
  7. United States Department of Agriculture plants profile accessed 2.14.2013
  8. Biota of North America Program 2014 county distribution map
  9. University of Wyoming, Department of Ecosystem Science & Management, Skeletonleaf Bursage, Ambrosia tomentosa
  10. "Washington State Noxious Weed Control Board, skeleton-leaf bursage, Ambrosia tomentosa". Archived from the original on 2015-03-16. Retrieved 2015-05-17.
  11. Idaho's Noxious Weeds – Skeletonleaf Bursage Retrieved 2010-03-25.
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