Hohenbergia proctorii is synonymized here to W. urbaniana based on the remarkable similarity of its type collection with fruiting individuals of W. urbaniana, and the overlap in the diagnostic characters. The main diagnostic character used to separate H. proctori from W. urbaniana is the acuminate and inconspicuous wing of the posterior sepals in the former (vs. obtuse); however, this ambiguous character was found to be variable in flowering and fructifying specimens of W. urbaniana, and it is not particularly distinctive in the type of H. proctori. Another justification for this synonymization is that the type locality of H. proctori overlaps with the distribution range of W. urbaniana. —SeeAguirre-Santoro 2017p. 25
