Pinaceae 23 



Selagineila Densely tufted sterile branches 

 densa very short and crowded ; leaves, 



Rydb. densely crowded, many-ranked 



linear or needle-shaped in age, slightly flat- 

 tened and grooved on the upper side, the 

 margin fringed, tipped with a white bristle; 

 fertile branches erect, the spikes quad- 

 rangular ^-f of an inch long, bracts folded 

 together, thick, triangular-ovate, fringed on 

 the margin and tipped with a white bristle 

 half as long as that of the leaves. 



In sterile dry ground and on exposed rocks 

 throughout the region from the bases to the 

 tops of the highest mountains, forming 

 grayish-green mats on the ground. 



Pine Family 



Resinous trees and shrubs mostly with 

 evergreen, narrow, entire or scale-like leaves; 

 the pollen sacks and ovules borne in separate 

 spikes; fruit a cone with numerous, several 



