100 Sudden 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 Chrysanthemum segetum fistu- 
losum, Coreopsis tinctoria fistulosa, etc. On the analogy 
of these cases I propose to call this new Dahlia, DaJilia 
variabilis fistulosa. This variety arose from a crop raised 
Fig. 15. Dahlia variabilis fistulosa , a new variety which 
has appeared in my cultures. 
from the seeds of D. far. 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. 1 It was 
I have unfortunately not yet succeeded in fertilizing Dahlias 
artificially by their own pollen. 
