]> Botany [collector note: Illinois: FH] Drouet, Francis Elliot & Louderback, Harold B. Drouet, Francis Elliot & Louderback, Harold B. F. E. Drouet & H. B. Louderback Francis Elliot Drouet & Harold B. Louderback Drouet, F. E. & Louderback, H. B.