1. (

• white_clover ,
• dutch_clover ,
• shamrock ,
• Trifolium_repens

) creeping European clover having white to pink flowers and bright green leaves; naturalized in United States; widely grown for forage ;

2. (

• common_wood_sorrel ,
• cuckoo_bread ,
• shamrock ,
• Oxalis_acetosella

) Eurasian plant with heart-shaped trifoliate leaves and white purple-veined flowers ;

3. (

• hop_clover ,
• shamrock ,
• lesser_yellow_trefoil ,
• Trifolium_dubium

) clover native to Ireland with yellowish flowers; often considered the true or original shamrock ;