Trifolium vesiculosum, the arrowleaf clover, is a species of flowering plant in the family Fabaceae. It is native to southeastern and eastern Europe, the northern Caucasus, Turkey, Syria, and Lebanon, and has been introduced to other locales, including the United States and Australia. A cool-season annual, it is a large species reaching 1 m (3 ft) with 5 cm (2 in) leaves.