40 Some Notes on Fragaria 



Foliage. The leaflets of chinensis are much rounder than those of 

 virginiana. Crossed with grandifiora ^ it produces a mixed progeny, 

 having leaflets ranging from nearly as round as those of chinensis to 

 rather longer than virginiana. Grading them from the roundest to the 

 longest I classified 39 such plants in five groups as follows : 



Roundest Longest 



9 10 6 3 11 



The first three groups (with 25 plants) could be called round and the 

 other two (with 44 plants) could be called long. 



Similarly graded in point of thickness of leaf, four groups were made : 



Thickest Thinnest 



10 15 12 2 



The long may be thick and the round thin. 



The object of this experiment was to test grandifiora for mixed 

 origin and the result, to my mind, is conclusive — grandifiora resembles 

 chiloensis or chinensis more than virginiana, but it is evidently heterozy- 

 gous, and has probably arisen as a cross and not as a sport from either 

 of those forms. 



(Chinensis x chiloensis) F^ '^ x F^ (Royal Sovereign x Givon's Late 

 Prolific) (Plant family 211) gave F^ plants with many leaflets, six in one 

 case and frequently five, also normal trifoliate plants — 13 normal, 11 ab- 

 normal — the numbers are small but point to equality. All the plants 

 of this cross were very strong growing in every way. The foliage was 

 dark in all cases. Chinensis $ x elatior </ (204) gave F^ plants with 

 very strong growing and light coloured foliage, so like elatior that if the 

 cross had been made elatior % x chinensis </ I would have repeated it, 

 fearing some accident had taken place, but as all my chinensis plants are 

 female, and cross backs with both parents show, in the small numbers 

 at present to hand, unmistakable signs of segregation, I have no hesita- 

 tion in accepting the cross as perfectly true — jPg's from selfed F^s, un- 

 obtainable up to now. Chinensis % x Daltoniana (189) gave ^i plants 

 with large leaves of the Daltoniana type. F2 unobtainable up to now. 



F^ plants from a cross {chiloensis x a garden variety) crossed back 

 with another garden variety (208) still retain the excessive vigour of 

 their foliage. The Fc^ selected had leaves of slightly chiloensis type, and 

 the cross back gave plants of the garden variety type in 45 cases out 

 of 50. 



Variegation in foliage. The lack of chlorophyll is such a fluctuating 

 character in Fragaria that one is not attracted to it as a study, when 



