]> Botany Lichtwardt, Robert W., Ferrington, Leonard C. & Hayford, Barbara L. Lichtwardt, Robert W., Ferrington, Leonard C. & Hayford, Barbara L. R. W. Lichtwardt, L. C. Ferrington & B. L. Hayford Lichtw., Ferrington & Hayford Lichtwardt, Ferrington & Hayford