tick trefoil(n = noun.plant) beggar lice, beggar's lice - any of various tropical and subtropical plants having trifoliate leaves and rough sticky pod sections or loments;
is a kind of subshrub, suffrutex
is a member of desmodium, genus desmodium
has particulars: beggarweed, desmodium purpureum, desmodium tortuosum

american dog tick, bean trefoil, bird's foot trefoil, black-legged tick, deer tick, hard tick, horse tick, indian tick fever, lesser yellow trefoil, marsh trefoil, moon trefoil, prairie bird's-foot trefoil, prairie trefoil, sheep tick, soft tick, stinking bean trefoil, tick, tick fever, tick off, tick over, trefoil, trefoil arch, water tick, water trefoil, western black-legged tick, wood tick, yellow trefoil