Left: Large Hop Trefoil (Trifolium aureum), right: Hop Trefoil (Trifolium campestre procumbens), medicinal plant, historical chromolithography, ca. 1796.
Left: Large Hop Trefoil (Trifolium aureum), right: Hop Trefoil (Trifolium campestre procumbens), medicinal plant, historical chromolithography, ca. 1796