184 ' MH, C. DAHWIN OJf THE SEXUAL BELATIONS OF 



Table III. — Short-stxled Fobm {continued). 



V. 



VI. 



10 flowers fertilized by mm longer 



lOflowers fertilizeij by oiun shorter 



stamens. 



stamens. 







64?* 



















— 



— 







21 







9 



Too sterile for any average. 



Too sterile for any average. 



I fertilized a number of flowers without particular care with their own 

 two pollens, but they did not produce a single capsule ; the position of 

 the stigma within the calyx renders the fertilization without some care 

 difficult. 



Summary of the three preceding Tables. 



Long-styled form. — Twenty-six flowers fertilized by the stamens 

 of corresponding length, borne by the mid- and short-styled forms, 

 yielded Cl-5 per cent, of capsules, which contained, on an average, 

 89-7 seed. 



Twenty-six flowers fertilized by the other and shorter stamens 

 of the mid- and short-styled forms yielded only two very poor 

 capsules. 



Thirty flowers fertilized by this form's own two sets of stamens 

 yielded only eight very jjoor capsules ; but flowers well fertilized 

 by bees by one or both of their own kinds of pollen produced 

 numerous capsules containing, on an average, 21-5 seed. 



Short-styled form. — Twenty -five flowers fertilized by the stamens 

 of corresponding length, borne by the long- and mid-styled forms, 

 yielded 72 per cent, of capsules, which (excluding one capsule 

 with only nine seeds) contained, on an average, 70'8 seed. 



Twenty flowers fertilized by the longer stamens of the long- 

 and mid-styled forms yielded only two very poor capsules. 



Twenty flowers fertilized by both their own two sets of stamens 

 yielded only two poor (or perhaps three) capsules. 



Mid-styled form. — Twenty -four flowers fertilized by the stamens 

 of corresponding length, borne by the long- and short-styled 

 forms, yielded 96 (probably 100) per cent, of capsules, which con- 



* I suspect that, by mistake, I fertilized this flower with the pollen of the 

 shorter stamens of the long-styled form, and it would then have yielded about 

 64 seed. Flowers to be thus fertilized were marked with black silk ; those with 

 the poUcn of the shorter stamens of the short-styled with black thread ; and thus, 

 I suspect, the mistake arose. 



