172 A Preliminarij Note on the Genetics o/Fragaria 



(b) F. vesca monophylla. 



Duchesne's father sowed elatior (Hautbois) seed in 1760, and in 

 1761, amongst the plants that came up, sowed vesca seeds. The plants 

 were neglected till 1763, when Duchesne fits went through them and 

 found one plant with single leaves (Fig. 1). This plant he said bred 

 true whether from seed or stolons. 



Fig. 1. 



Fig. 2. 



Fig. 3. 



In 1910 I received some plants of monophylla character from France; 

 some of these in spring and late autumn produce a few bifoliate and 

 trifoliate leaves. In 1912 I selfed one plant, apparently a pure mono- 

 phylla, and obtained 15 plants, up to the present, always true, and 

 10 plants giving occasional bifoliate or trifoliate leaves (Figs. 2 and 3). 



In 1911 I crossed vesca, trifoliate, normal {N) with monophylla 

 abnormal {A). 



TABLE 11. 



1911 



1912 



Parents 



N 



1913 



Fo 



1 

 177 A' 



73 A (Plate VII, tig. 1) 



Before leaving the subject of monophyllas I would call attention to 

 a curious plant (Plate VII, fig. 2). Before I had any monophyllas I selfed 

 a plant that had "gone wild " on the edge of a gi-ass-covered bank invad- 

 ing a bed of Royal Sovereigns ; from this I obtained a large family not 

 unlike a family I obtained at the same date from a selfed Royal Sovereign. 

 From one plant of this family which I selfed I obtained a small family 

 all more or less abnormal. The plant depicted is probably the most 



