Breeding experiments which show that hybridisation and mutation etc. 253 



little red along the median ridges) to gs (spotted) and ni 5 (rtihrinervis 

 with colour pattern 5). Spotting did not appear conspicuously in the 

 other families. 



H. Foliage characters. 



The foliage, like the bud characters, is blended in Fj, and in F2 

 shows every possible stage of intergradation between the two parents. 

 In many of the F., families the rosettes appeared at one time to be 



Fig. 17. Grandiflora x rubrica'yx, Fj. Foliage 



classifiable into (i) those having red spots on the leaves, and (2) those 

 without red spots. No doubt the former are nearer grandiflora than 

 the latter, but as the plants developed, any such sharp division into 

 classes became impossible and they were seen to form a continuous 

 series as regards their foliage. 



In the full-grown plants the upper stem-leaves and the lower 

 bracts are very different in the two parent types (see table i, p. 227). 

 In grandiflora they are thin, smooth, light green, and pointed at base. 



