| Jensia yosemitana | |
|---|---|
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Jensia |
| Species: | J. yosemitana |
| Binomial name | |
| Jensia yosemitana (Parry ex A.Gray) B.G.Baldwin | |
| Synonyms | |
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Jensia yosemitana is a species of flowering plant in the family Asteraceae known by the common name Yosemite tarweed. It is endemic to California, where it has a scattered distribution across the Sierra Nevada and its foothills. Some of the populations lie inside Yosemite National Park.
Jensia yosemitana is an annual herb with a slender stem up to 25 centimeters (10 inches) tall. The hairy to bristly leaves are 1 to 3 centimeters (0.4-1.2 inches) long and located all along the stem. The inflorescence produces flower heads on thin, threadlike peduncles. The head generally has 2-8 yellow ray florets each about 2 millimeters (0.08 inches) long and 1-7 yellow disc florets with black anthers. The fruit is an achene with a bristly or scaly pappus.
References
- Flann, C (ed) 2009+ Global Compositae Checklist
- The Plant List, Jensia yosemitana (Parry ex A.Gray) B.G.Baldwin
- Baldwin, Bruce G. 1999. New combinations and new genera in the North American Tarweeds (Compositat-Madiinae). Novon 9:462-471
- Jepson Manual Treatment
- Calflora taxon report, University of California, Jensia yosemitana (Gray) B.G. Baldwin Yosemite tarplant
- Flora of North America, Jensia yosemitana (Parry ex A. Gray) B. G. Baldwin. 1999
External links
- United states Department of Agriculture Plants Profile
- Calphotos Photo gallery, University of California
| Taxon identifiers | |
|---|---|
| Jensia yosemitana |
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| Madia yosemitana | |
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