Calliandrein.—A glucoside (probably a saponin) obtained from Calliandra grandiflora Benth. (Fam. Leguminosae), a Mexican shrub. It is a white, odorless powder soluble in water, the solution forming a heavy froth on shaking. It possesses antipyretic properties, having been administered with asserted good results in intermittent fever. Dose, one grain (0.065 Gm.).