]> Botany Hellquist, Carl Barre, Wiersema, John H. & Borsch, Thomas Hellquist, Carl Barre, Wiersema, John H. & Borsch, Thomas C. B. Hellquist, J. H. Wiersema & T. Borsch Hellquist, C. B., Wiersema, J. H. & Borsch, T.