Trifolium jokerstii
Encyclopedia
Trifolium jokerstii is a rare species of clover
known by the common names Butte County golden clover and Jim's clover. It is endemic to Butte County, California
, where it is known from eight or nine occurrences near Oroville
. It grows in seasonally moist habitat, such as vernal pool
s, pastures, and ephemeral creeks. 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. It was named for the California botanist Jim Jokerst.
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 stipule
s. The inflorescence
is a head of at least five golden yellow flowers on a bowl-like base of bract
s.
Clover
Clover , or trefoil, is a genus of about 300 species of plants in the leguminous pea family Fabaceae. The genus has a cosmopolitan distribution; the highest diversity is found in the temperate Northern Hemisphere, but many species also occur in South America and Africa, including at high altitudes...
known by the common names Butte County golden clover and Jim's clover. It is endemic to Butte County, California
Butte County, California
Butte County is a county located in the Central Valley of the US state of California, north of the state capital of Sacramento. As of the 2010 census, it had a population of 220,000. The county seat is Oroville. Butte County is the "Land of Natural Wealth and Beauty."Butte County is watered by the...
, where it is known from eight or nine occurrences near Oroville
Oroville, California
Oroville is the county seat of Butte County, California. The population was 15,506 at the 2010 census, up from 13,004 at the 2000 census...
. It grows in seasonally moist habitat, such as vernal pool
Vernal pool
Vernal pools, also called vernal ponds or ephemeral pools, are temporary pools of water. They are usually devoid of fish, and thus allow the safe development of natal amphibian and insect species...
s, pastures, and ephemeral creeks. It was previously included within the description of Trifolium barbigerum
Trifolium barbigerum
Trifolium barbigerum is a species of clover known by the common name bearded clover. It is native to Oregon and northern and central California, where it grows in many types of habitat, including disturbed and cultivated areas. It is an annual herb growing decumbent to erect in form and hairy to...
as an odd yellow-flowered variant of a mostly purple-pink-flowered species, and was elevated to species status in 1998. It was named for the California botanist Jim Jokerst.
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 stipule
Stipule
In botany, stipule is a term coined by Linnaeus which refers to outgrowths borne on either side of the base of a leafstalk...
s. The inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...
is a head of at least five golden yellow flowers on a bowl-like base of bract
Bract
In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis, or cone scale. Bracts are often different from foliage leaves. They may be smaller, larger, or of a different color, shape, or texture...
s.