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Trifolium jokerstii : ウィキペディア英語版 | Trifolium jokerstii
''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.〔(California Native Plant Society Rare Plant Profile )〕 It grows in seasonally moist habitat, such as vernal pools, pastures, and ephemeral creeks.〔(The Nature Conservancy )〕 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.〔Vincent, M. A. and R. Morgan. (1998). ''Trifolium jokerstii'' (Leguminosae, Papilionoideae), a new species from Butte County, California. ''Novon'' 8:1 91-3.〕 It was named for the California botanist Jim Jokerst.〔(CalFlora Botanical Names )〕 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==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Trifolium jokerstii」の詳細全文を読む
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