62 
becoming abortive, forming no seeds; in the rest of the flowers stamens and 
pistils rudimentary or none, or so rudimentary as to appear absent. It 
should be remembered that the radiant flowers of the fertile plants fre- 
quently bear stamens and pistils, the latter aborting. 
Plants under consideration originated in nature from the fertile species, 
probably as a seed mutant or bud sport. They did not originate in cultiva- 
tion. 
If certain forms or varieties of Hydrangea arborescens merit the name 
“Hills of Snow,” var. sterilis should be known in the garden as ‘‘Moun- 
tains of Snow.” 
In the near future a closer study will be made of the species in its nat- 
ural habitat, along with the sterile variety. Owing to the conspicuous ap- 
pearance of var. sterilis among the fertile species, the occasional specimens 
are readily found by plant lovers and removed to cultivation. As a result 
this variety is very rare in this vicinity at present. In the opinion of the 
writer the form or forms advertised by florists as Hydrangea grandiflora 
may probably be cultivated specimens of var. sterilis. 
