Centromadia pungens, the common spikeweed[2] or common tarweed,[3] is a species of North American plants in the tribe Madieae within the family Asteraceae. It is native to northern Baja California and the western United States (California, Oregon, Washington, Idaho, Nevada, Arizona). The plant is considered a noxious weed in parts of the Pacific Northwest.[4][5]
| Centromadia pungens | |
|---|---|
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Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Centromadia |
| Species: | C. pungens
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| Binomial name | |
| Centromadia pungens | |
| Synonyms[1] | |
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Centromadia pungens is an herb up to 120 cm (47 in) tall. It produces arrays of numerous yellow flower heads with both ray florets and disc florets.[6][7][8]
- Subspecies[1]
- Centromadia pungens subsp. laevis (D.D.Keck) B.G.Baldwin - Baja California, southern California
- Centromadia pungens subsp. pungens - most of species range
References
edit- ^ a b The Plant List Centromadia pungens (Hook. & Arn.) Greene
- ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
- ^ NRCS. "Centromadia pungens". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 5 June 2015.
- ^ Biota of North America Program 2014 county distribution map
- ^ Calflora taxon report, University of California, Centromadia pungens (Hook. & Arn.) Greene, common tarweed
- ^ Flora of North America, Spikeweed, Centromadia Greene
- ^ Greene, Edward Lee 1894. Manual of the Botany of the Region of San Francisco Bay 196
- ^ Torrey, John & Gray, Asa 1843. Flora of North America 2(3): 399
External links
edit- Calflora Database: Centromadia pungens (Common spikeweed, Common tarweed)
- Jepson eFlora (TJM2): Centromadia pungens
- USDA Plants Profile for Centromadia pungens (common tarweed)
Media related to Centromadia pungens at Wikimedia Commons
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