Trifolium jokerstii
| Trifolium jokerstii | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Tribe: | Trifolieae |
| 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[1] and Butte County golden clover. It is endemic to Butte County, California, where it is known from eight or nine occurrences near Oroville.[2] It grows in seasonally moist habitat, such as vernal pools, pastures, and ephemeral creeks.[3] 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.[4] It was named for the California botanist Jim Jokerst.[5]
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
- ↑ "Trifolium jokerstii". Natural Resources Conservation Service PLANTS Database. USDA. 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
- 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