BROOKLYN BOTANIC GARDEN RECORD 
VOL. XXXI JANUARY, 1942 NO. 1 
CNS: EN Pees 
BROOKLYN BOTANIC GARDEN 
1942 
GuIpE No. 13 
By 
ALFRED GUNDERSEN AND ArtTHUR H. Graves 
This list of trees is a companion to the List of Shrubs published 
a year ago. We have at present about 500 species of trees, repre- 
senting 130 genera, and in addition more than a hundred hybrids 
and varieties, making a total of about 620 kinds. Some of these 
are still in the nursery and a few are seedlings. 
The species are arranged in two columns, American trees on 
the left, those of Europe and Asia on the right; a vacant space 
implies that no species of the genus exist in that hemisphere. 
Coy 
The names are those of Rehder’s Manual, Second Edition 
(1940) ' with a few exceptions, about a dozen in all, which have 
been widely used for many years in both botany and horticulture. 
The numbers after the family names are approximately those of the 
Engler System, used in our arrangement of records, maps, and 
specimens. 
The drawings have been made from living plants by Miss Maud 
TA Rudy. Statieaicrst. 
Note: Vhe front cover illustration represents Davidia involucrata 
var J7ilmoriniana. 
ABBREVIATIONS AND SIGNS 
/talics, Synonym h, Hardiness not dependable in 
Bo ely Di 1 Brooklyn 
d, Dioecious var, Variety 
| Rehder, Alfred. Manual of cultivated trees and shrubs. 2d ed. New 
York, 1940, 
