100 



Siiddoi Appearance and Constancy. 



Fig. 15 represents a single Dahlia, whose ray florets 

 are all transformed into long and broad tubes which are 

 open above. The same thing occurs in many other com- 

 posites, for instance in Chrysanfheinuni segetuiu fistu- 

 losum. Coreopsis tinctoria fistulosa, etc. On the analogy 

 of these cases I propose to call this new Dahlia, Dahlia 

 variabilis fistulosa. This variety arose from a crop raised 



Fig. 15. Dahlia I'ariahilis fistulosa, a new variety which 

 has appeared in my cultures. 



from the seeds of D. var. Jul. Chretien, a dwarf single 



Dahlia with red flowers of the color of red lead, the 



tubers of which I had bought in 1892 in Lyons. From 



the seeds which I saved in that year from this variety, 



I raised in 1893 several plants of which one had a white 



flower. I only sowed seeds of this in 1894.^ It was 



T have unfortunately not yet succeeded in fertilizing Dahlias 

 artificially by their own pollen. 



