172 HETEROSTYLED TRIMORPHIC PLANTS. Chap. IV. 



Table 27 — continued. 

 Oxalis Valdiviana (from Hildebrand) 



Nature of Union. 



Number 



of 



Flowers 



fertilised. 



Number 



of 

 Capsules 

 produced. 



Number 



of 

 Seeds per 

 Capsule. 



Short-styled form, by pollen of shortest) 

 stamens of long - styled. Legitimate > 



18 



18 



11.0 







Short-styled form, by pollen of shortest] 

 stamens of mid - styled. Legitimate > 



10 



10 



11.3 



Short-styled form, by pollen of own and ) 

 own-form longest stamens. Illegitimate > 



21 















Short-styled form, by pollen of own and ] 

 own-form mid-length stamens. Illegiti- >■ 



22 















Short-styled form, by pollen of longest] 

 stamens of mid -styled. Illegitimate > 



4 















Short-styled form, by pollen of mid-length ] 

 stamens of long-styled. Illegitimate > 



3 











We here have the remarkable result that every one 

 of 138 legitimately fertilised flowers on the three forms 

 yielded capsules containing on an average 11.33 seeds. 

 Whilst of the 255 illegitimately fertilised flowers, only 

 6 yielded capsules which contained 3.83 seeds on an 

 average. Therefore the fertility of the six legitimate 

 to that of the twelve illegitimate unions, as judged 

 by the proportion of flowers that yielded capsules, is 

 as 100 to 2, and as judged by the average number of 

 seeds per capsule as 100 to 34. It may be added that 

 some plants which were protected by nets did not spon- 

 taneously produce any fruit; nor did one which was 

 left uncovered by itself and was visited by bees. On 

 the other hand, scarcely a single flower on some uncov- 



