Fic 15.—PRIMULA SINENSIS CROSSED WITH P. STELLATA. 
Above, the parents. In the middle, the heterozygote offspring 
—P. pyvamidalis, Below, the result of self-pollinating P. pyramidalis : 
1. P, sinensis: 2. P. pyvamidalis ; 1. P, stellata, 
(To face p. 104. 
