ABSTRACT
The genus Schizanthus (Solanaceae) contains 11 species, all showy, erect annual plants native to Chile. The species most often used as an ornamental plant is S. x wisetonensis, an alleged hybrid of S. pinnatus × S. retusus cv Grahamii. In appearance, it is intermediate between the two parents, the flowers most resembling the latter parent in outline. S. × wisetonensis is normally grown as an annual in gardens in temperate zones, but occasionally also is used as a spring flowering pot plant. The literature on flowering response of S. × wisetonensis is very limited.
