46 KEY TO GENERA AND SPECIES 



84. Leaves i inch or more in length. Cones about 

 i inch long, with many scales. Cult. Na- 

 tive in Europe. (Fig. 76.) European Larch, 

 Larix decidua Mill. 



SPRUCE. Leaves 4-sided or 4-angled, attached to 

 all sides of the branch. Fruit a cone, as in 

 Pine. 



85. Young twigs hairy 86. 



85. Young twigs smooth or nearly so 88. 



86. Mature cones less than 3 inches long 87. 



86. Mature cones more than 3 



inches long. Cult, and es- 

 caped. Native in Europe. 

 (Fig. 77.) Norway Spruce, 

 Picea Abies (L.) Karst. 



87. Leaves ^ to f of an inch long, 



normally all curving up- Fig. 77. 



wards. Cones 1 1 to 2 inches 

 long, commonly not remaining attached to 

 the branch for, more than one year; cone 

 scales usually entire at the margin. Tree 

 reaching 40 feet or more in height, usually 

 with a pyramidal crown and growing on 

 uplands, rarely in wet places. Penn. and 

 central New England northwestward, and 



