]> Botany Raven, Peter Hamilton, Stebbins, George Ledyard & Tomich, R. Raven, Peter Hamilton, Stebbins, George Ledyard & Tomich, R. P. H. Raven, G. L. Stebbins & R. Tomich Raven, P. H., Stebbins, G. L., & Tomich, R. Peter Hamilton Raven, George Ledyard Stebbins & R. Tomich