Rest-Harrow, the Thor ny, Cammock, Petty-Whin, or Ground-Furze; Ononis spinosa, L. (the arvensis of Dr. Smith) an indigenous perennial plant; growing on barren pastures, hedge-banks, and paths ; it flowers in the month of July.--The young shoots of this plant may be boiled and eaten among culinary vegetables. Dr. Withering remarks, that a decoction of the roots has been recommended in cases of the stone and jaundice.- Cows and goats eat the Rest-harrow; though sheep do not relish it, and it is refused by horses and hogs.