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Taxon: Ambrosia tomentosa Nutt.

Genus: Ambrosia
Family: Asteraceae (alt. Compositae).
Nomen number: 103826
Place of publication: Gen. N. Amer. pl. 2:186. 1818
Name verified on: 29-Oct-2007 by ARS Systematic Botanists. Last updated: 09-May-2011
No species priority site assigned.

NO ACCESSIONS IN NPGS UNDER THIS NAME.

SPECIES RESTRICTED AS A STATE NOXIOUS WEED
A declared aquatic or terrestrial noxious weed and/or noxious-weed seed in these U.S. states (see state noxious weed lists), with links to state information or web documents:
CO°, ID*°, KS(as Franseria discolor)*, NE°, NE(as Franseria discolor)°, NM(as Franseria discolor)°, WY*°.
ªAquatic. *Terrestrial. °In seed.
noxious weed information from Invaders Database System for northwestern U.S.

Common names:

  • silverleaf poverty-weed   (Source: State Noxweed Seed ) – English
  • skeleton-leaf bur-sage   (Source: Intermt F ) – English
  • ambrósia   (Source: D. Groth, p.c. 2005) – Portuguese (Brazil)

Economic importance:

  • Vertebrate poisons: mammals   (to livestock fide Kingsbury, as Franseria discolor)
  • Weed: potential seed contaminant   (fide State Noxweed Seed)
More:

Distributional range:

      Native: (links to other web resources are provided for some distributions)

References:

  • Cronquist, A. et al. 1972–. Intermountain flora.
  • Dorn, R. D. 1977. Manual of the vascular plants of Wyoming.
  • Dorn, R. D. 1984. Vascular plants of Montana. [= Franseria discolor].
  • FNA Editorial Committee. 1993–. Flora of North America.
  • Groth, D. 2005. pers. comm. [re. Brazilian common names].
  • Harrington, H. 1954. Manual of the plants of Colorado. [= Franseria discolor].
  • Kartesz, J. T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland.
  • McGregor, R. L. et al. (The Great Plains Flora Association). 1986. Flora of the Great Plains.
  • Payne, W. W. 1964. A re-evaluation of the genus Ambrosia (Compositae). J. Arnold Arbor. 45:427.
  • Seed Regulatory and Testing Division, Agricultural Marketing Service, U.S.D.A. State noxious-weed seed requirements recognized in the administration of the Federal Seed Act (updated annually).
  • Steyermark, J. A. 1977. Flora of Missouri. [= Franseria discolor Nutt.].
  • Welsh, S. L. et al. 1987. A Utah flora. Great Basin Naturalist Mem. 9.
More:

Synonyms:


Check other web resources for Ambrosia tomentosa Nutt.:


Images:

  • Fruits: U.S. National Seed Herbarium image
More:
  • Check PlantSystematics.org for additional images
  • Google Images Images Note: Be advised that their identity may be inaccurate. Proper identification of a plant may require specialized taxonomic knowledge or comparison with properly documented herbarium material.

Abbreviations & symbols in GRIN Taxonomy

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Cite as:
USDA, ARS, National Genetic Resources Program.
Germplasm Resources Information Network - (GRIN) [Online Database].
National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?103826 (26 October 2014)

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