It is the scientific name of a woody and hairy plant. It means spiny ononis (ononis is the asnillo plant). It is also known as opener, kills donkeys, asnillo, balomaga, stops oxen, shin, trigger, cat, gatuña, bull grass, donkey comb, broken plows. It is from the Fabaceae family. It is a very hairy plant and has pink or purple hairy flowers.