four-leaf clover

by yamachem - uploaded on January 31, 2015, 1:01 am

the plant called Clover,or trefoil.

Clovers usually have leaves with three leaflets.

but,some Clovers have leaves with four leaflets.

For the rarity,they are considered lucky.

For more info is here:http://en.wikipedia.org/wiki/Clover