Scrophulariaceae-Selagineae is briefly surveyed. Selago L. sensu stricto and Cromidon Compton are re-defined, and a new genus, Chenopodiopsis Hilliard, is established. The generic position of 16 species enumerated by Rolfe (in Fl. Cap. 5(1), 1901) under Selago section Euselago is clarified. Cromidon comprises 12 species; 6 are newly described, 6 have been transferred from Polycarena, Selago or Walafrida. Chenopodiopsis comprises 3 species, 2 transferred from Selago, 1 newly described.