PINACEAE 



Jeffrey Pine 



Pinus jeffreyi Grev. & Balf. {Pinus ponderosa 

 var. jeffreyi Vasey) 



A tree similar in most of its characteristics to Pinus ponderosa 

 and differing from it in the following ways: 



HABIT. A tree 100-80 feet high and 4-6 feet in diameter; 

 not quite reaching the proportions of ponderosa pine; lumber 

 is sold as ponderosa. 



LEAVES. In fascicles of 3, or 2 and 3; 4-9 inches long; blue- 

 green; persistent 6-9 years. 



FRUIT. 5-15 inches long; scales thin, armed with a stout, 

 long, incurved prickle. 



TWIGS. Stout; purple; with pineapple-like odor when bruised. 

 Winter buds: not resinous. 



HABITAT. Endures greater extremes of climate than pon- 

 derosa; mixed with ponderosa pine and other conifers. 



* * * 

 Apache Pine 



Pinus engelmannii Carr. {Pinus apacheca Lemm.) 



A tree similar in most of its characteristics to Pinus ponderosa^ 

 and differing from it in the following ways: 



HABIT. A tree 50-60 feet high and 1-2 feet in diameter 

 (max. 75 by 3 feet). 



LEAVES. In fascicles of 3 (occasionally 2-5); 8-15 inches 

 long, (mostly about 10 inches; dark green; with conspicuously 

 fringed margins; persistent 2 years; cross section shows 11-14 

 resin ducts; basal sheath %-l inch long. 



HABITAT. Transition zone; altitudinal range 5,500-8,200 

 feet; otherwise similar to ponderosa pine. 



GENERAL. Some authors consider this tree a synonym of 

 Pinus ponderosa; it is characterized during its first few years by 

 development of a very deep taproot and little height growth. 



* * * 

 Washoe Pine 



Pinus washoensis Mason & Stock. 



This rare and local species was described from Washoe County, 

 Nevada in 1945. It is related to P. jefferyi. 



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