Ambrosia tomentosa

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Ambrosia tomentosa
Skeletonleaf bur ragweed
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Genus: Ambrosia
Species: A. tomentosa
Binomial name
Ambrosia tomentosa
  • 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

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]

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]


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]


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