| rush skeletonweed |
USDA PLANTS Symbol: CHJU USDA ARS GRIN: 10317 ITIS: 37029 NAPIS: PBFASBA |
| Chondrilla juncea L. | |
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Taxonomic Rank: Magnoliopsida: Asterales: Asteraceae |
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| Synonym(s): skeletonweed | |
Rush skeletonweed is a perennial forb that can grow up to 4 ft. (1.2 m) tall. Coarse-looking, multiple stems appear leafless due to inconspicuous leaves and arise from a basal rosette of sharply lobed leaves. The lower 4-6 in. (10.2-15.2 cm) of stem is covered with coarse brown hairs. Both stem and leaves produce a milky sap when broken. Flowers are small and yellow and develop in the mid-summer to fall. Mature, healthy plants can produce 1,500 flower heads and up to 20,000 seeds. Rush skeletonweed invades dry rangelands in the Western United States, displaces native species, and reduces forage for livestock and wildlife. Rush skeletonweed is native to regions of Europe, Asia, and Africa and was accidentally brought to the United States as a contaminant of fodder in 1914. |
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Identification, Biology, Control and Management Resources
- Weed of the Week - USDA Forest Service
| Selected Images from Invasive.org | View All Images at Invasive.org |
 Plant(s); Rosette Utah State University Archive, Utah State University, Bugwood.org Additional Resolutions & Image Usage |
 Feature(s); Roots Utah State University Archive, Utah State University, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Richard Old, XID Services, Inc., Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Steve Dewey, Utah State University, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Steve Dewey, Utah State University, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); Rosette and old plant Utah State University Archive, Utah State University, Bugwood.org Additional Resolutions & Image Usage |
 Stem(s); The stiff down-turned hairs on the lower part of the stem are the diagnostic charicteristic. Richard Old, XID Services, Inc., Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); in flower Gary L. Piper, Washington State University, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); Utah State University Archive, Utah State University, Bugwood.org Additional Resolutions & Image Usage |
 Infestation; Utah State University Archive, Utah State University, Bugwood.org Additional Resolutions & Image Usage |
 Seed(s); Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org Additional Resolutions & Image Usage |
 Diagram or Graphic; Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 314. USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org Additional Resolutions & Image Usage |
Taxonomic References:
- USDA, NRCS. 2001. The PLANTS Database, Version 3.1, National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
Invasive Listing Sources:
- Faith Campbell, 1998. Plants that Hog the Garden: Invasive Plants in the United States. Fine Gardening Online
- Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
- John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- Pacific Northwest Exotic Pest Plant Council, 1998
- WeedUS - Database of Plants Invading Natural Areas in the United States
- Arizona Noxious Weeds
- California Invasive Plant Council
- California Noxious Weeds
- Colorado Noxious Weeds
- Idaho Noxious Weeds
- Montana Noxious Weeds
- Nevada Noxious Weeds
- Oregon Noxious Weeds
- South Dakota Noxious Weeds
- Washington Noxious Weeds
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