20 CYTOLOGISCHE STUDIEN AN EINIGEN KOMPOSITEN, 



Schreibung meiner Untersuchung betreffs der Keduktionsteilung in 

 einer von diesen Varietäten komme, wird es nicht unzweckmässig 

 sein, einige Bemerkungen über die Herkunft dieser Bastards vor- 

 anzuschicken. 



In dieser Hinsicht bringt das neulich erscliienene Werk ,, Luther 

 Burbank ; His Method and Discoveries and their Apphcation " uns 

 eine dankenswerte Nachricht. Es sagt : — 



,, The first' few seasons of its {Ch. Leucanthemum) cultivation 

 made no notable change of its appearance, nor indeed until after 

 I had given it a new impetus by hybridizing it with an allied 

 species. 



,, The plant with which the cross was made was a much 

 larger and more robust species of daisy which I imported from 

 Europe, which it is known colloquially as the ox-eye daisy, although 

 the botanist gives it a distinct name, in recognition of its dis- 

 similar appearance, calhng it Cli. maximum. There is another 

 continental daisy, by some botanists considered as a distinct 

 species and named Ch. lacustre which is closely similar to the 

 British species {Ch. maximum) and of this seeds were secured 

 from a German firm. 



,, The cross was made first with the English daisy (Ch. 

 maximum) by taking pollen from this flower to fertilize the best 

 specimens of the American daisy {Ch. Leucanthemum) 



,, When the seeds thus produced were sown next season and 

 the plants came to blooming time, it was at once evident that 

 there was marked improvement. 



,, Further improvement was attempted by crossing the hybrid 

 plant with the German daisy just referred to. A slight improve- 

 ment was noticed but the changes were not very marked. 



,, In a meantime, I learned of an Asiatic daisy known to 



