GENUS PINUS 93 



P. Torreyana. From P. Coulteri it differs in the length of the membranous portion of the seed- 

 wing and in its gray-green leaves. 



Plate XXXVIII. 



Fig. 326, Cone. Fig. 327, Seed, nut and wing. Fig. 328, Magnified leaf-section. 



66. PINUS COULTERI 



1837 P. Coulteri D. Don in Trans. Linn. Soc. xvii. 440. 

 1840 P. MACEOCARPA Liudley in Bot. Reg. xxvi. Misc. 62. 



Spring-shoots multinodal, pruinose. Leaves in fascicles of 3, from 15 to 30 cm. long, very stout; 

 resin-ducts medial, or with an occasional internal duct, hypoderm multiform and of many cells. 

 Conelet very large, the scales tapering to a long sharp point. Cones from 25 to 35 cm. long, reflexed, 

 ovate or oblong-ovate, somewhat oblique, persistent; apophyses sublustrous tawny yellow, very 

 protuberant, with a narrow shoulder from which springs the umbo in the form of a large stout curved 

 talon; seed- wing nearly equally divided between the very thick base and the membranous apex. 



Remarkable among Pines for the size and weight of its cones, many times heavier than the longer 

 cones of P. Lambertiana, illustrating the great change that the cone-tissues undergo in the gradual 

 evolution of the species. It is a tree with dark-green foliage, growing from northern Lower Cali- 

 fornia over the mountains of southern California to the Santa Lucia range and to Mt. Diablo. It is 

 of no value except for fuel and for its large nuts. It is best recognized by its seed. The cone differs 

 from the others of this group in its yellow color, not unlike that of boxwood. 



Plate XXXIX. 



Fig. 329, Cone of small size. Fig. 330, Seed, nut and wing. Fig. 331, Magnified leaf-section. 

 Fig. 332, Conelet. 



