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shamrock, common wood sorrel, cuckoo bread, Oxalis acetosella | Eurasian plant with heart-shaped trifoliate leaves and white purple-veined flowers | |
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hop clover, shamrock, lesser yellow trefoil, Trifolium dubium | clover native to Ireland with yellowish flowers; often considered the true or original shamrock | |
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shamrock, white clover, dutch clover, Trifolium repens | creeping European clover having white to pink flowers and bright green leaves; naturalized in United States; widely grown for forage |