46 
Annual Report 
LIST OF TREES 
Groivltid in tbe Parks of €iticlntiatit arranged according 
to their natural Order 
Prepared by ADOLPH LEUE, A.M., Ph.D. 
At the order of Park vSuperiiiteudent J. W. Rodgers. 
Mr. J. W. RoDGERS, Super intent dent of Parks: 
Dear Sir, — Engaged by you to label the trees in Burnet Woods, 
Eden Park, Washington Park, and Lincoln Park, and to furnish you a 
list of the different species of trees growing therein, I beg to report 
that I have labeled four hundred trees in the parks mentioned, com- 
prising eighty-eight species, a list of which, arranged in their natural 
order, I append to this report. To complete the work about four hun- 
dred more labels are needed. 
In regard to the nomenclature, let me say that I followed Gray's 
Manual of Botany, Loudon's Arboretum, and Koch's Dendrology in pref- 
erence to the new nomenclature adopted by the Association for the 
Advancement of Science, because the text-books now in use have been 
changed. 
Permit me to call your attention to a few facts bearing upon the 
present arborescent condition of our parks. 
The improvements made in our parks during the last twelve years 
have not extended to the trees; on the contrary, the latter have been 
sadly neglected. Since their establishment only one new species — the 
Catalpa Bungei — has been added; while in Burnet Woods three species — 
the Butternut, the Hop-tree, and the Scarlet Maple — have become extinct. 
In the same park the grand old Beeches are decaying very rapidly. This 
decay is caused by the removal and burning of the fallen leaves in the 
autumn and in early spring. The roots of the Beeches, which trail along 
on or near the surface of the ground, need the protection of leaves. 
Where this protection is removed trees become top-dry, or stag-horned. 
This removal of the forest-litter and the burning-over of the ground 
also caused the disappearance of the early spring flowers, which, years 
ago, made the older portion of Burnet W^oods so attractive. 
The washouts or gnllies, which were formerly unknown in Burnet 
Woods, and which are now becoming deeper and more numerous, are 
due to the same cause. 
