Book  (Dec 1998)  Page(s) 336.  
 
Keith Kirsten (TANsirk) Floribunda. Tantau (Germany) 1990... neatly formed, cupped, sem-double flowers... on the orange side of vermilion... they seem happiest in a warm climate... named in honor of a South African horitculturalist in recognition of his valuable contributions to the nursery industry in that country...