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''Pickeringia'' is a monotypic genus of flowering plants in the legume family, Fabaceae. It was recently assigned to the unranked, monophyletic ''Cladrastis'' clade. It was named after the naturalist Charles Pickering. Its only species is ''Pickeringia montana'', which is known by the common name chaparral pea. It is endemic to California in the United States, where its distribution extends along the Coast Ranges to the Peninsular Ranges, as well as along the Sierra Nevada foothills. It is also known from Santa Cruz Island.〔Howard JL. 1992. (''Pickeringia montana''. ) In: Fire Effects Information System. USDA FS. Rocky Mountain Research Station, Fire Sciences Laboratory.〕 It is one of very few legumes native to the chaparral habitat. Its nitrogen-fixing ability helps it thrive in rocky, sandy soil. The plant is also well-suited to a landscape of hills, slopes, and recently burned areas; its roots spread quickly and help anchor loose soil, preventing erosion. ==Description== The chaparral pea rarely sprouts from seed. More often it sends up new stems from roots growing outward from the mother plant. It forms low, dense, thorny thickets of shiny dark green leaves. In spring and summer the plant blooms in bright magenta flowers. It bears pods containing pealike seeds. There are two subspecies of chaparral pea: * ''Pickeringia montana'' subsp. ''montana'' is widespread in California. * ''Pickeringia montana'' subsp. ''tomentosa'', sometimes called woolly chaparral pea, is limited to the hills of southern California. 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「Pickeringia」の詳細全文を読む スポンサード リンク
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