| 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 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 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]
