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]
| Trifolium jokerstii | |
|---|---|
Scientific 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 | |
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
edit- ^ "NatureServe Explorer 2.0".
- ^ USDA, NRCS (n.d.). "Trifolium jokerstii". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 15 December 2015.
- ^ California Native Plant Society Rare Plant Profile
- ^ The Nature Conservancy
- ^ Vincent, M. A. and R. Morgan. (1998). Trifolium jokerstii (Leguminosae, Papilionoideae), a new species from Butte County, California. Novon 8:1 91-3.
- ^ CalFlora Botanical Names
External links
edit- Calflora: Trifolium jokerstii (Jim's clover)
- Jepson Manual eFlora (TJM2) treatment of Trifolium jokerstii
- Species Accounts: Butte County Golden Clover
- UC CalPhotos gallery: Trifolium jokerstii
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