Book  (1986)  Page(s) 40.  
 
'Caesar' (Varbole; 'Carambole'). HT (Jan van Veen; Carlton Rose Nursery, 1981). 'Ilona' x unnamed seedling. Bud ovoid; Fl. cardinal red, dbl. (33 petals), high-centered, globular blooms borne 2-3 per cluster; slight tea fragrance; Fol. leathery, medium green, semi-glossy; red prickles; upright, branched growth; mr.