OF THE 



UNIVERSITY 



FLORA OF LOS ANGELES 

 AND VICINITY. 



Family 1. PINACEAE. PINE FAMILY. 



Resinous trees or shrubs, mostly with evergreen nar- 

 row entire or scale-like leaves. The wood uniform in tex- 

 ture, without tracheae, these marked by large depressed 

 disks. The pollen sacs and ovules borne in separate spikes 

 (cones). Perianth none. Stamens several together, 

 subtended by a scale, filaments more or less united ; 

 anthers 2-several-celled, variously dehiscent ; pollen 

 grains often provided with 2 lateral inflated sacs. 

 Ovules with 2 integuments, borne solitary or several to- 

 gether on the surface of a scale, which is often subtended 

 by a bract. Fruit a cone with few-numerous woody, 

 papery or fleshy scales, sometimes berry-like. Seeds 

 wingless or winged. Endosperm copious. Embryo 

 straight slender. Cotyledons 2 or several. 



Leaves not scale-like. 



Leaves usually fascicled; cones maturing the second year. 



1. PTNUS. 



Leaves scattered, appearing 2-ranked; cones maturing the first year. 

 Cones pendulous; bracts conspicuous. 2. PSEUDOTSUGA. 



Cones erect. 3. ABIES. 



Leaves scale-like. 



Monoecious; cones not berry-like. 4. LIBOCEDRDS. 



Dioecious; cones with fleshy scales, berry-like. 5. JUNIPERUS. 



