322 



FERTILITY OF CROSSED 



CHAr IX. 



only six capsules, each containing five seeds. As the 

 number of seeds per capsule is here the same, the fer- 

 tility of the crossed and self-fertilised flowers is given 

 in Table F as equal, or as 100 to 100. But if the 

 flowers which failed to produce capsules be included, 

 the crossed flowers yielded on an average 4 50 seeds, 

 whilst the self-fertilised flowers yielded only 94 seeds, 

 so that their relative fertility would have been as 100 

 to 21. I should here state that it has been found con- 

 venient to reserve for separate discussion the cases of 

 flowers which are usually quite sterile with their own 

 pollen. 



Table F. Relative Fertility of the Flowers on the Parent-plants 

 used in my Experiments, when fertilised with Fallen from a 

 distinct Plant and with their own Pollen. Fertility judged rf 

 by the average Number of Seeds per Capsule. Fertility of 

 Crossed Flowers taken as 100. 



Ipomcea purpurea crossed and self-fertilised flowers) 

 yielded seeds as (about) J 



Mimulus LUTEUS crossed and self-fertilised flowers yielded \ 

 seeds as (by weight) j 



Linaria vulgaris crossed and self-fertilised flowers 

 yielded seeds as 



Vandellia nummularifolia crossed and self- fertilised) 

 flowers yielded seeds as J 



Gesneria pendelina crossed and self-fertilised flowers) 

 yielded seeds as (by weight) / 



Salvia coccinea crossed and self-fertilised flowers yielded "1 

 seeds as (about) J 



Brassica oleracea crossed and self-fertilised flowers'! 

 yielded seeds as J 



Eschscholtzia californica (English stock) crossed and 

 self-fertilised flowers yielded seeds as (by weight) 



Eschscholtzia californica (Brazilian stock grown in 1 

 England) crossed and self-fertilised flowers yielded seeds > 

 (by weight) as (about) ) 



Delphinium consolida crossed and self-fertilised flowers) 

 (self-fertilised capsules spontaneously produced, b'lt result > 

 supported by other evidence) yielded seeds as ... J 



100 to 100 

 >> ? *" 

 14 

 67? 

 100 

 100 



0", 



n 71 

 n H 



