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Home :: Weed Department :: Noxious Weeds » Skeletonleaf Bursage

Skeletonleaf Bursage (bur ragweed, silverleaf, povertyweed)
Asteraceae (= Compositae), the aster family

Background

Skeletonleaf Bursage Skeletonleaf bursage is native to the Great Plains region. It spreads both by seed and creeping roots, keeping primarily on, but not limited to, dry or poorly drained sites.

Description

Skeletonleaf bursage is a perennial up to 3 feet tall. Leaves are alternate, up to 5 inches long, and very deeply lobed with coarsely toothed margins. The lobes are reduced in size from leaf base to tip. The upper leaf surface is Skeletonleaf Bursage greenish gray and may have rough hairs; the lower surface is white with short, dense hairs. Flower heads are 1/4 inch wide and are produced from June through August. Each head contains inconspicuous yellow flowers that are either male or female (not both). Fruits are 2-seeded, light brown burs with up to 10 short spines. The plant has extensive horizontal roots.

Distribution

Skeletonleaf Bursage distribution mapSkeletonleaf bursage occurs from the desert Southwest to Wisconsin and Illinois and in these indicated Idaho counties.

Control

No biological control agents are available for skeletonleaf bursage, but herbicides are available for control of this weed.

© 1999 University of Idaho: Text and photographs for these pages from Idaho's Noxious Weeds, by Robert H. Callihan and Timothy W. Miller (revised by Don W. Morishita and Larry W. Lass).

Please contact: Ag Publishing, University of Idaho, Moscow, Idaho 83844-2240; 208 882-7982 visit the Resources for Idaho website at http://info.ag.uidaho.edu, for more information about this or other publications.

 

 

 

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