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Ambrosia tomentosa, the skeletonleaf bur ragweed,[3] silverleaf povertyweed, or skeleton-leaf bursage,[4][5][6] is a North American species of perennial plants in the family Asteraceae.[7]

Ambrosia tomentosa
Conservation status

Apparently Secure  (NatureServe)[1]
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
Nutt.
Synonyms[2]
  • 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.[8][9] It is often found growing alongside roads and in the sandy parts of plains.[10]

It is considered a noxious weed in several states.[6][11][12] It is also considered a severe allergen.[13]


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.[14][7]


References


  1. "NatureServe Explorer".
  2. The Plant List Ambrosia tomentosa Nutt.
  3. Eastern Colorado Wildflowers, Ambrosia tomentosa (Skeletonleaf Burr Ragweed or Skeletonleaf Bursage)
  4. Center for Invasive Species and Ecosystem Health, skeletonleaf bursage Ambrosia tomentosa Nutt.
  5. "Oregon State University, StreamWebs, Skeletonleaf bursage (Ambrosia tomentosa)". Archived from the original on 2016-03-04. Retrieved 2015-05-17.
  6. "Ambrosia tomentosa". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2010-03-25.
  7. Flora of North America Vol. 21 Page 17 Ambrosia tomentosa Nuttall, Gen. N. Amer. Pl. 2: 186. 1818.
  8. United States Department of Agriculture plants profile accessed 2.14.2013
  9. Biota of North America Program 2014 county distribution map
  10. "Ambrosia tomentosa - Colorado Wildflowers". www.easterncoloradowildflowers.com. Retrieved 2021-04-23.
  11. University of Wyoming, Department of Ecosystem Science & Management, Skeletonleaf Bursage, Ambrosia tomentosa
  12. "Washington State Noxious Weed Control Board, skeleton-leaf bursage, Ambrosia tomentosa". Archived from the original on 2015-03-16. Retrieved 2015-05-17.
  13. "Skeleton-Leaf Burr-Ragweed (Ambrosia tomentosa) Species Details and Allergy Info". www.pollenlibrary.com. Retrieved 2021-04-23.
  14. Idaho's Noxious Weeds – Skeletonleaf Bursage Retrieved 2010-03-25.


Media related to Ambrosia tomentosa at Wikimedia Commons


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