Teh 
teen, have been planted together in the South point of the lilac 
triangle, leaving the main area for the horticultural varieties. 
In view of the rapid changes of color with age in lilac flowers, 
I have attempted so far as possible to use characters other than 
color in their classification, in particular, size of clusters, compact- 
ness of clusters, and size of individual flowers. 
TREES 
At the time of flowering in spring there is not in general suf- 
ficient time for the verification of names. A large part of this 
work must depend on study of specimens during winter. Even 
so it is dificult always to have the right specimen available in all 
cases. 
During 1936 our list of trees was separated from the list of 
shrubs. With the records of trees separate from the more ex- 
tensive records of shrubs we hope to give better attention to each 
of these groups. Exclusive of Conifers, we now have about 8&5 
genera and 330 species of trees, not counting varieties or the local 
— 
flora collection. In many cases, for example maple, no more 
planting space is available. 
CONIFERS 
In the fall our collection of Conifers was studied. Under our 
city conditions a number of the species have not grown well; how- 
ever, quite a few others are growing fairly well. With more 
special attention to this group much improvement is possible. Our 
collection is as vet very small. 
HERBACEOUS PLANTS 
With Mr. Free I made an inventory of herbaceous piants dur- 
ing the spring. During the year Mrs. Putz has given considerable 
time to this group, especially to getting specimens and records in 
order. 
RAVINE FOR CRYPTOGAMS 
Botany, in the early history of the science, meant the study of 
flowers. It is only in modern times that the lower plants have 
assumed importance. [Except for a few ferns, cryptogams have 
