Contribution from the Forest Service 
HENRY S. GRAVES, Forester 
Washington, D. C. PROFESSIONAL PAPER December 30, 1916 
SUGAR PINE 
By Louis T. Larsen, Forest Examiner, and 'T. D. WoopBury, Assistant District 
Forester 
CONTENTS. 
Page. Page 
Imponrtanceotsugar piece. s2o--2-- = cee oe ial lenel Epayereah ay nee cA Os oe Ea ek ed ia ae ecu 12 
Geographical and commercia! range.......... PAC UU GR Oe ea eis Beene, EN eer a Reis SA pS eee 13 
Habipandootisystem...se. +.) Eee cc sn. -e- s 3 | Values and grades of lumber......-.......... 16 
Bark, leaves, flowers, and seed........-.-.--- Si PMALKOLS sonas cs oh ere SEI ae one oe 20 
Size and longevitwes wis 2.0-2.-sidee- vce ee AP UWSOSte esse eng 4. ce ge Soe etka ae RS eS 20 
Susceptibility to injury and disease..-......- Ae SUM pale PLICGS ese sess ne ie eee ae nL 2s 
Silvical requirements..........-..-........-. Tt \* Growth and: yield aos sssts cscs soe ae 24 
RE PLOGUCtIONee, aay ay: SF SOUR ee 8) V Management: 3s eee eee toe ee ee 30 
I BONESIE Tih/ DOS das SECS GOR SR meas See Site aera 9 | Management of private timberlands......... 35 
10°.) Appendix ie, Aen esac secon eee oe Seen 37 
LD YS SR UONCOXG fe na Rr 
IMPORTANCE OF SUGAR PINE. 
Sugar pine (Pinus lambertiana Dougl.) was first recognized by 
David Douglas, of the London Horticultural Society, on the head- 
waters of the Umpqua River in Oregon, October 26, 1826. The tree 
was given the specific name lambertiana in honor of Douglas’s friend 
Aylmer Bourke Lambert, a founder and vice president of the Linnean 
Society of London and the author of a prominent work on pines. 
Sugar pine is the most valuable commercial timber tree on the 
Pacific coast, and its relative value among all the conifers of the world 
is very high. This is attributable partly to the characteristic straight- 
ness and unusual clear length of the trees and partly to the excellent 
physical qualities of the wood, which adapt it admirably to high- 
class uses in manufacture and trade. 
Commercially, sugar pine may be considered, like the redwood, as 
essentially aCaliforniatree. Althoughit occursin southern Oregon and 
in Lower California, it is relatively unimportant in both of these regions. 
The total stand in Oregon is estimated at approximately 3 billion 
Note.—This bulletin describes the sugar pine, its growth, range, and uses in the form of lumber, and is 
of interest to foresters and wood users generally. 
55380°— Bull. 426—16——1 
a 
