]> Botany (MO) Werff, Hendrik Hessel van der, Gray, Bruce & Quizhpe, Wilson Werff, Hendrik Hessel van der, Gray, Bruce & Quizhpe, Wilson H. H. van der Werff, B. Gray & W. Quizhpe van der Werff, H. H., Gray, B. & Quizhpe, W.