58. 



Heterostylism in Oxalis 



different types of Mid-styled plant, and possibly two different types 

 of Short-styled plant. We get clear evidence for different Mids in 

 the 1912 numbers to follow. But in Table IV, if we consider cross 31 

 and its reciprocal 32, we get 65 Longs : 59 Mids : 130 Shorts. In 

 cross 33 and its reciprocal 34, where the same individual Mid parent 

 is used, we get 19 Longs : 18 Mids : 87 Shorts. This may be taken as 

 doubtful evidence for a second type of Short-styled plant. 



TABLE IV. 



0. valdiviana F... 



The letters in brackets show the extraction of the parents. 



Cross Number 



Parents 



Longs 



Mids 



Shorts 



31 

 33 

 32 

 34 

 37 

 70 

 71 

 72 

 75 



Mid {Lx31) 

 Mid (L X 31) 

 Short (L X S) 

 Short {S X L) 

 Short {L X S) 

 Short {S X L) 

 Short {M X S) 

 Short {31 X S) 

 Short {31 X S) 



X Short (L X S) 

 X Short {S X L) 

 X Mid (L X 31) 

 X Mid (L X 31) 

 xMid {MxL) 

 X Mid (L X 31) 

 X Mid (L X 31) 

 X Mid (L X 31) 

 X Mid {L X 31) 



28 



11 



37 



8 



12 



19 



3 











23 



8 

 36 

 10 

 13 

 20 







52 

 50 

 78 

 37 

 14 

 25 

 

 2 

 12 



II 



III 



The small letters show reciprocal crosses. 



Analysis of F^ Mid x Short and Short x Mid, flowering 1912. 



Unfortunately the i^g parents for the F^ generation were chance 

 survivors through the winter of 1910. There remained in 1911 

 three Short-styled plants and seven Mid-styled plants to carry on 



