叶刺 leaf spine
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叶刺 leaf spine 叶或叶的一部分变态所成的尖锐突起,称为叶刺。仙人掌( Opuntia sp.)和日本小蘖( Berberisthunbergii)的刺是叶片的变形物,刺槐( Robiniapseudoacacia)和秦椒( Zanthoxylum piperitum)的刺是托叶的变形物,特称为托叶刺,与根刺、茎刺、茎棘是相似的器官。
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