white clover (or Trifolium repens). According to Casey, four-leaf clovers "are as rare as the five-leaf clover, which is ...

Finding a four-leaf clover is considered a rare event, thus making it a powerful symbol for the unexpected fortunes of life. Shamrock (Young White Clover or Three-Leaf Clover): The Shamrock ...

Or, finding a four-leaf clover brings good luck ... A 14-leaved red clover and a 14-leaved white clover were both discovered in the US and both made it to the Guinness Book of Records.