CHAP. VI. ON HETEROSTYLED PLANTS. 



247 



TABLE 33. 



Fertility of the Legitimate Unions taken together, com- 

 pared with that of the Illegitimate Unions together. 

 The fertility of the Legitimate Unions, as judged by 

 both standards, is taken as 100. 



of Species. 



Illegitimate Unions. 



Primula veris 



P. elatior 



P. vulgaris 



P. Sinensis 



P. Sinensis (second trial) 



P. Sinensis (Hildebrand) 



P. auricula (Scott) 



P. Sikkhnensis " 



P. cortusoides " 



P. involuerata " 



P. farinosa 



Average of the nine species of Primula . . 



Hottonia palustris (H. Muller) 



Linum grandiflorum (the difference probably I 



is much greater) J 



L. perenne 



L. perenne (Hildebrand) 



Pulmonaria officinalis (German stock, Hilde- I 



brand) J 



Pulmonaria angustifolia 



Mitchella repens 



Borreria, Brazilian sp 



Polygonum fagopyrum 



Lythrum salicaria 



Oxalis Valdiviana (Hildebrand) 



O. Kegnelli 



O. speciosa 



27 



60 

 84 

 



100 

 80 

 95 

 74 

 72 

 71 

 88.4 



the two sexes of dioecious plants. NOT does the calyx 

 differ, but the corolla sometimes differs slightly in shape, 

 owing to the different position of the anthers. In Bor- 

 reria the hairs within the tube of the corolla are differ- 

 ently situated in the long-styled and short-styled forms. 

 In Pulmonaria there is a slight difference in the size of 

 the corolla, and in Pontederia in its colour. In the re- 



