4?< Imi-.li) Manual 



used tor paper i)ulp. tOr i^eiicral Innilicr and for masts and 

 s])ars of ships. Xcwf. to X. W. Trrr.. south to X. J.. X. i'.. 

 Mioh.. and Miiui. 



I. Tsuga Larr. I lenilock. 



Everiireen trees with Hat linear leaves, those on the top 

 of the twig short, and having the twigs covered with sterigma- 

 bearin^ scales representing leaf bases. 



Branches slenrler. horizontal or drooping ; leaves spread- 

 ing more or less into _' ranks; monecious ; carpellate cones 

 small, pendulous. 



1. Tsuga canadensis i L. ) Carr. Ilenilock. A tall 

 tree with slender, horizontal or drooping l)ranches. the old 

 i)ark daky in scales. Wood very coarse, light, brittle, and 

 soft; used for wood pulp. Bark used for tanning. Source 

 of Canada pitch. Self-prunes twigs. X. S. to Minn, south 

 to Ohio, and Del., along the Alleghanies to Ala., and to 

 Mich, and Wis. 



•"». Abies (Tourn.) Hill. Mr. 



Evergreen trees with tiat linear leaves, rarely prismatic, 

 without sterigma-bearing scales, but with prominent circular 

 leaf scars with a central bundle scar. 



Carpellate cones erect, the scales deciduous ; monecious : 

 carpellate bract longer than the ovuliferous scale. 



1. Carpellate bract serrulate, shorter than the ovulifer- 

 ous scale (;r but little longer; leaves obtuse. -/ 

 balsa mca. 



1. Carpellate bract aristate, longer than the ovuliferous 

 scale: leaves mostly emarginate. ./. frascri. 



1. Abies balsamea (L.) Mill. BaKsam Fir. A slender 

 short-lived tree with smooth blistered bark. Wood very light 

 and soft. Canada balsam is obtained from its resin. Xewf. 

 to Hudson Bay and Alberta, south to Penn.. along the Alle- 

 ghanies to \'a., and to Mich., Iowa, and Minn. 



2. Abies fraseri (Pursh) Poir. Fraser Fir. A slen- 

 der tree growing on the high Alleghanies. Bark smooth, v^ith 

 resin blisters. W. Va., N. Car., and Tcnn. 



