24 Pinaceae 



or few, woody, papery or fleshy scales, some- 

 times berry-like; seed wingless or winged. 



Scales of the fruit numerous, alternate; leaf 

 buds scaly. 



Leaves in clusters. 



Clusters ensheathed at the base, containing 2, 3, or 5 



leaves. Pinus. 



Clusters not ensheathed at the base containing 



many leaves. Larix. 



Leaves solitary. 



Cones erect ; scales deciduous. Abies. 



Cones pendent ; scales persistent. 



Branchlets smooth; bracts 3 -toothed. 



Pseudotsuga. 



Branchlets roughened by the persistent leaf bases. 



Leaves petioled, not pungent. Tsuga. 



Leaves sessile, pungent. Picea. 



Scales of the fruit few, opposite ; leaf buds naked. 



Fruit fleshy and berry-like. Juniperus. 



Fruit a dry cone. Thuja. 



A tree 20 or 30 feet high generally 

 Pinus albi- 



caulis En- with a short trunk 2-4 feet in 

 gelm. diameter, stout, very flexible 



White-bark branches, often standing nearly 

 erect and forming an open 

 irregular broad head; often a low shrub and 

 nearly prostrate at high altitudes; bark 



