

Chap. VI. 



ON HETEROSTYLED PLANTS. 



247 





Table 33. 



Fertility of the Legitimate Unions taken together, corn- 

 pared with that of the Illegitimate Unions together. 

 The fertility of the Legitimate Unions, as judged by 

 both standards, is taken as 100. 



Name of Species. 



Primula veris 



P. elatior 



P. vulgaris 



P. Sinensis 



P. Sinensis (second trial) 



P. Sinensis (Hildebrand) 



P. auricula (Scott) 



P. Sikkimensis " 



P. cortusoides " 



P. involucrata " 



P. farinosa " 



Average of the nine species of Primula . . 



Hottonia palustris (H. Miiller) 



Linum grandifloruni (the difference probably f 



is much greater) j 



L. perenne 



L. perenne (Hildebrand) • 



Pulmonaria officinalis (German stock, Hilde- f 



brand) j 



Pulmonaria angustifolia 



Mitchella repens 



Borreria, Brazilian sp 



Polygonum fagopyrum 



Lythrum salicaria 



Oxalis Valdiviana (Hildebrand) . 



O. Regnelli " 



O. speciosa *' 



Illegitimate Unions. 



Proportional 

 Number of 



Flowers 

 which pro- 

 duced 

 Capsules. 



Average 



Number of 



Seeds per 



Capsule. 



65 

 75 

 54 

 63 

 53 

 42 

 15 

 31 

 66 

 43 

 44 

 69 

 61 



69 



20 

 







32 



47 

 

 46 

 £3 

 34 

 

 49 



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- 



18 



