Jensia yosemitana is a species of flowering plant in the family Asteraceae known by the common name Yosemite tarweed.[3] 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.[4][5]
| Jensia yosemitana | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Jensia |
| Species: | J. yosemitana
|
| Binomial name | |
| Jensia yosemitana | |
| Synonyms[1][2] | |
| |
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.[6]
References
edit- ^ 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
edit- United states Department of Agriculture Plants Profile
- Calphotos Photo gallery, University of California
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