C. W. Richardson 175 



I find FoS of my first St Antoine family frequently come true to the 

 perpetual habit. But no clear case of a non-perpetual F^ breeding true 

 has appeared — the nearest gives 



20 iVP 2 P 2 possibly NP. 



For reasons already stated the two P's may be NP's. 



F^s of " Bedford Champion " x " Laxton's Perpetual " have resulted 



up to the present in 



F, (Parent NP) 



SNP 6P 



F, (Parent P) 



14 NP 5 P. 



With the pure perpetuals, now obtained, more satisfactory results 

 are to be looked for, but the evidence to hand points to the perpetual 

 habit depending upon more than one factor. 



§ III. Sex. 



In crossing Fragaria the question of sex inheritance is of the greatest 

 importance. It is rash to come to the conclusion that any cross, made 

 with plants of one sex, which produces sterile flowers, is bound to 

 produce sterile flowers when made with similar plants of a difl^erent sex. 

 Knowledge of the heredity of sex, if it could be obtained, would be of 

 extreme use to the producer of new garden varieties, for the best fruit 

 comes from the plants that have both the male and female parts of the 

 flower well developed \ 



Various sexual arrangements are found amongst strawberry flowers. 



1. Females with the male organs undeveloped. 



2. Females with most of the female organs atrophied or hyper- 

 trophied and inefficient and no male organs developed. 



3. True hermaphrodites with both male and female organs de- 

 veloped. 



4 Males with the female organs undeveloped. 



5. Males with the female organs only developed in a few flowers 

 (generally the first flowers produced in each truss). 



6. Flowers with neither male nor female organs developed, or with 

 female organs hypertrophied. 



1 Keens remarked on Hautbois with a dioecious arrangement. Tr. Hort. Soc. ii. 

 p. 393. 



12—2 



