| meadow hawkweed |
USDA PLANTS Symbol: HICA10 USDA ARS GRIN: 104346 ITIS: 503009 NAPIS: PBFBXBF |
| Hieracium caespitosum Dumort. | |
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Taxonomic Rank: Magnoliopsida: Asterales: Asteraceae |
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| Synonym(s): yellow hawkweed | |
Meadow hawkweed is a perennial plant in the sunflower family (Asteraceae). It grows from 1-3 ft. (0.3-0.9 m) tall and produces a milky sap when crushed. Leaves are mostly basal, lance shaped, hairy, 2-10 in. (5.1-25.4 cm) long and 1 in. (2.5 cm) wide. Flowers are yellow, dandelion-like, and develop in summer to fall. Meadow hawkweed is native to Europe and occurs in fields, roadsides and sparse woodlands. It was first found in the United States in Washington in 1969. |
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| Selected Images from Invasive.org | View All Images at Invasive.org |
 Foliage; Richard Old, XID Services, Inc., Bugwood.org Additional Resolutions & Image Usage |
 Feature(s); Stem Tom Heutte, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Feature(s); Stem Tom Heutte, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Elizabeth Bella, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Richard Old, XID Services, Inc., Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Tom Heutte, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Michael Shephard, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); Michael Shephard, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); in flower Richard Old, XID Services, Inc., Bugwood.org Additional Resolutions & Image Usage |
 Infestation; Roadside infestation Tom Heutte, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Infestation; Linda Wilson, University of Idaho, Bugwood.org Additional Resolutions & Image Usage |
 Infestation; Linda Wilson, University of Idaho, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Richard Old, XID Services, Inc., 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: 333. 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
- 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
- Idaho Noxious Weeds
- Idaho Noxious Weeds
- Montana Noxious Weeds
- Montana Noxious Weeds
- Oregon Noxious Weeds
- Oregon Noxious Weeds
- Washington Noxious Weeds
- Washington Noxious Weeds
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