Trifolium jokerstii

Imperiled  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Genus: Trifolium
Species:
T. jokerstii
Binomial name
Trifolium jokerstii
Vincent & R.Morgan

Trifolium jokerstii is a rare species of clover known by the common names Jim's clover[2] and Butte County golden clover. It is endemic to Butte County, California, where it is known from eight or nine occurrences near Oroville.[3] It grows in seasonally moist habitat, such as vernal pools, pastures, and ephemeral creeks.[4] It was previously included within the description of Trifolium barbigerum as an odd yellow-flowered variant of a mostly purple-pink-flowered species, and was elevated to species status in 1998.[5] It was named for the California botanist Jim Jokerst.[6]

This is an annual herb with a decumbent or erect, hairless stem. The leaves are made up of oval blades up to about 3 centimeters long which are marked with a white or purplish chevron, and large, lance-shaped, toothed stipules. The inflorescence is a head of at least five golden yellow flowers on a bowl-like base of bracts.

References

  1. ↑ "NatureServe Explorer 2.0".
  2. ↑ USDA, NRCS (n.d.). "Trifolium jokerstii". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 15 December 2015.
  3. ↑ California Native Plant Society Rare Plant Profile
  4. ↑ The Nature Conservancy
  5. ↑ Vincent, M. A. and R. Morgan. (1998). Trifolium jokerstii (Leguminosae, Papilionoideae), a new species from Butte County, California. Novon 8:1 91-3.
  6. ↑ CalFlora Botanical Names


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