| Centromadia pungens | |
|---|---|
| |
Scientific classification
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Centromadia |
| Species: | C. pungens
|
| Binomial name | |
| Centromadia pungens | |
| Synonyms [1] | |
| |
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 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
- ^ 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.
- ^ USDA, NRCS (n.d.). "Centromadia pungens". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. 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
- Calflora Database: Centromadia pungens (Common spikeweed, Common tarweed)
- Jepson eFlora (TJM2): Centromadia pungens
- USDA Plants Profile for Centromadia pungens (common tarweed)
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Media related to
Centromadia pungens at Wikimedia Commons
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