FOREWORD 
The need of a nontechnical booklet describing Alaska 
tree species has long been felt, and is the reason for the 
publication of this pocket guide. 
Alaska has 28 species that are known to attain tree 
size and form. All are described in the following pages. 
Both the scientific and common names for these species 
except Salix bebbiana are taken from Sudworth's 
Check List of the Forest Trees of the United States. 1 
Many standard books, as well as information on file in 
the office of the Forest Service, have been referred to 
for descriptive matter. Sudworth's Forest Trees of 
the Pacific Slope, 2 Sargent's Manual of the Trees of 
North America, 3 J. R. Anderson's Trees and Shrubs, 
Food, Medicinal, and Poisonous Plants of British 
Columbia, 4 and Henry's Flora of Southern British 
Columbia 5 were of especial value. 
Except in a few cases the drawings are from speci- 
mens collected in Alaska. For the species for which 
Alaskan specimens were not available the drawings were 
made from illustrations found in the books mentioned 
above. The range map of Alaska trees was compiled 
from very inadequate data and is subject to revision 
as more information becomes available. The map in 
Volume II of Zon and Sparhawk's Forest Resources 
of the World 6 was used as a base to which was added 
information obtained from personal knowledge of indi- 
viduals, bulletins of the United States Geological Sur- 
vey, and reports of the Alaska-Canadian Boundary 
> SVDWORTH, Q. B. CHECK LIST OF THE FOREST TREES OF THE UNITED STATES, 
their names and ranges. U. S. Dept. Apr. Misc. Clrc. 92, 295 p. 1927. 
• forest trees of THE facific slope. 441 p., lllus. Washington [D. C.J 
1908. 
• Sargent, C. S. manual of the trees of north America (exclusive of 
MEXICO). 
• Anderson, J. R. trees and snRURs, food, medicinal, and poisonous plants 
of British Columbia. 165 p. Illus. Victoria, B. C. 1925. 
» IlKNRY, J. K. FLORA OF 80CTHERN BRITISH COLUMBIA AND VANCOUVER ISLAND, 
WITH MANY REFERENCES TO ALASKA AND NORTHERN SPECIES. 3C3 p. Toronto. 
[1915.1 
• Zon, R., and Starhawk, W. N. forest resources of the world. 2 v., 
Illus. New York. 1923. 
2 
