Place of publication:
Wiener Ill. Gart.-Zeitung 19:2. 1894
Comment:
although Sprenger did not cite Forsskål, Schweinfurth's collection from 1891 bears an 1892 determination of "Plectranthus hadiensis (Fk.) Sfth.", indicating that Schweinfurth intended to make a new combination based on Forsskål's name