42 WEST-AMERICAN 



ing more northern localities. Cones smaller, 3 to 4 

 inches long, with few, small tubercled scales on the 

 outer side, mostly at the base. Otherwise not dis- 

 tinguishable from the other form which was published 

 by the same author in Transactions Linncean Society, 

 just before this on the same page, hence the name for 

 the other form radiata holds for the species, and 

 tuberculata may be retained for this variety of it. 



TWO-LEAVED INSULAR PINE. Var. (6) binata, Engelm. 



Small, scrubby trees with leaves mostly in pairs, 

 the cones very small, about 3 inches long and nearly 

 devoid of tubercles. A few trees on the islands of 

 Santa Cruz and Guadaloupe. 



No. 23 NarrOW-Cone Pine - P. attenuata, Lemmon. 



P. tuberculata, of Gordon, 1849 (a previously used, and, 

 therefore, untenable name for this species.) 



Usually small, early- bearing, slender trees on sunny 

 slopes of the Cascade Kange to the Northern Sierra 

 and southward, rarely on the Coast Ranges, to the 

 Santa Cruz and San Bernardino Mountains. Cones 

 in circles, strongly declined, narrow and pointed, 3 to 

 7 inches long, remaining on the trees and unopened 

 for an indefinite number of years. The outer scales 

 witli conical, quadrangular tubercles, terminated by 

 a very short, deltoid, firm prickle. Leaves in 3's, 3 

 to 6 inches long. 



Often called " Knob-cone Pine," but the largest 



