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Hazardia detonsa
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Hazardia detonsa : ウィキペディア英語版
Hazardia detonsa

''Hazardia detonsa'' is a rare species of shrub in the daisy family known by the common name island bristleweed. It is endemic to the Channel Islands of California, having been found on 4 islands (Santa Rosa, Santa Cruz, West Anacapa, and Middle Anacapa).〔(Calflora taxon report, University of California, ''Hazardia detonsa'' (E. Greene) E. Greene, Northern islands hazardia, island bristleweed, island hazardia, northern island haplopappus )〕
''Hazardia detonsa'' is a bushy shrub reaching to in height. It has densely woolly, glandular herbage of thick, serrated, oval-shaped leaves up to long. At the ends of its whitish stems it produces bell-shaped flower heads each about a centimeter long. Each flower head has several rows of white woolly phyllaries and an open end revealing disc florets and longer protruding ray florets. The florets are yellow and may age to red or purple.〔(Flora of North America, ''Hazardia detonsa'' (Greene) Greene, 1887. Island bristleweed )〕 The main threat to this species on Santa Cruz Island was the presence of feral Santa Cruz sheep. The sheep have been removed, allowing the plant to begin its recovery there.
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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