A flowering plant (Medicago arabica Medicago arabica ) in the pea and bean family Fabaceae native to the Mediterranean basin but now found throughout the world.
Wiktionary
Origin of Heart Clover
From Middle English HEART CLOVER HEART CLOVER hartclaver , herte clovre , heortclæfre , from Old English HEART CLOVER HEART CLOVER heortclæfre , equivalent to heart + clover HEART CLOVER .
