CONE-BEARERS. 33 



reaching the heart-wood. And the cones of these several 

 forms will vary as greatly, generally the smallest cone is 

 produced by the lightest-barked tree; yet all belong to 

 the one species. This species as well as four or five 

 others has been called by thoughtless persons, ''Bull 

 Pine," a meaningless term, unfit to apply to any pine, 

 besides its indiscriminate use for half a dozen species has 

 led to no end of confusion. 



VAEIETIES OF YELLOW PINE. 

 BROWN-BARK PINE. Var. (a) nigricans, Lemmon. 



Trees of medium size, one hundred and twenty to 

 one hundred and fifty feet high, flourishing in moister 

 situations than other forms, longer retaining their 

 numerous limbs, hence more symmetrical and spire- 

 shaped or rounded in outline. 



Bark dark brown or almost black, hard, compara- 

 tively thin, rather coarsely checked, sap-wood of 

 many layers, heart- wood consequently meager, often 

 very resinous; rosettes of male flowers especially con- 

 spicuous, 4 to 5 inches across. 



This form is generally found in company with the 

 larger, typical, whitish-barked trees, but in moister 

 localities. It is particularly prevalent in small val- 

 leys and along the edges of forests in the Sierras, and 

 southward to Northern Arizona. 



FOOTHILLS YELLOW PINE. Var. (b) Benthamiana, Vasey. 

 Medium-sized trees in the Coast Mountains and 



