156 HETEEOSTYLED TBIMORPHIC PLANTS. Chap. IV. 



Besides the experiments in the above table, I ferti- 

 lised a considerable number of mid-styled flowers with 

 pollen, taken by a camel's-hair brush, from both the 

 longest and shortest stamens of their own form : only 

 5 capsules were produced, and these yielded on an 

 average 11 "0 seeds. 



Table 25. — Short-styled Form. 



I. 



! union. 



12 flowers fertilised by the short- 

 est stamens of the long-styled. 

 These stamens equal in length the 

 pistil of the short-styled. 



69 56 



61 88 



88 112 



66 111 



62 



100 



83 per cent, of the flowers yielded 

 capsules. Each capsule contained, 

 on an average, 81 -3 seeds. 



III. 

 Illegitimate union. 

 10 flowers fertilised by the mid- 

 length stamens of the long-styled. 



14 















— 



23 



Too sterile for any average. 



II. 



Legitimate union. 

 13 flowers fertilised by the short- 

 est stamens of the mid-styled. 

 These stamens equal in length the 

 pistil of the short-styled. 



93 69 



77 69 



48 53 



43 9 











— . 



61 per cent, of the flowers yielded 

 capsules. Each capsule contained, 

 on an average, 64 '6 seeds. 



IV. 



Illegitimate union. 

 10 flowers fertilised by the long- 

 est stamens of the mid-styled. 



















— 

 

 Too sterile for any average. 



flower, and I tried to remember to 

 wipe the pincers carefully after 

 eacli fertilisation ; but in making 

 eighteen different unionB, some- 

 times on windy days, and pestered 

 by bees and flies buzzing about, 

 some few errors could hardly be 

 avoided. One day I liad to keep 

 a third man by me all the time to 

 prevent the bees visiting the un- 



covered plants, for in a few 

 seconds' time they might have 

 done irreparable mischief. It was 

 also extremely difficult to exclude 

 minute Diptera from the net. In 

 1862 I made the great mistake of 

 placing a mid-styled and long- 

 styled under the same huge net : 

 in 1863 I avoided this error. 



