Jensia yosemitana

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 Edit this classification
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[1][2]
  • Madia yosemitana Parry ex A.Gray
  • Anisocarpus yosemitanus (Parry ex A.Gray) Greene

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
  1. Flann, C (ed) 2009+ Global Compositae Checklist
  2. The Plant List, Jensia yosemitana (Parry ex A.Gray) B.G.Baldwin
  3. Baldwin, Bruce G. 1999. New combinations and new genera in the North American Tarweeds (Compositat-Madiinae). Novon 9:462-471
  4. Jepson Manual Treatment
  5. Calflora taxon report, University of California, Jensia yosemitana (Gray) B.G. Baldwin Yosemite tarplant
  6. Flora of North America, Jensia yosemitana (Parry ex A. Gray) B. G. Baldwin. 1999


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