226 PROCEEDINGS OF THE CALIFORNIA 



1. Pinus Sabiniana, Dougl. (Digger Pine.) 



Invariably disposed over south-hillsides of the interior, occupying the driest 

 expositions — Mount Diablo ! Russian River Valley ! Geysers ! Auburn and 

 Forest Hill ! San Jose Valley ! Near Mission San Antonio ! ! Mountains east 

 of San Diego ! ! 



As to its value there are a great many contradictory assertions made by 

 farmers ; some assert it yields an excellent wood for yokes and similar objects, 

 while others denounce it as entirely useless. 



2. Pinus Lambertiana, Dougl. (Sugar Pine.) 



Pine Mountains near Geysers ! Near Cloverdale ! Forest Hill ! Mountains 

 east of San Diego ! ! Generally with Pinus pvnderosa in groves, occupying the 

 damper localities. 



3. Pinus ponderosa, Dougl. (Yellow Pine.) 



Russian River Valley ! south of Clear Lake ! Geysers ! Auburn and Forest 

 Hill ! San Jose Valley ! Blue Mountains ! ! (Mr. Dunn) Rocky Mountains ! ! 

 New Mexico ! ! 



4. Pinus insignis. Dougl. (Monterey Pine.) 

 Monterey ! Carmelo Valley ! 



This species covers many thousand acres of land near and by Mouterey and 

 Carmelo, forming quite an extensive forest along the coast between these two 

 places. Height, sixty to one hundred feet, and one to three feet diameter ; out- 

 line very irregular, consisting often of only a few rigid spreading branches ; foli- 

 age dense and of a vivid green color ; cones persistent, often from ten to nine- 

 teen whorls ; bark very thick and rimose. Wood extremely resinous and 

 rather coarse-grained ; excellent for street planks, bridges, and floors. At pres- 

 ent it is no more in the market as lumber ; the good timber has been all cut, 

 and the saw-mill removed. 



Considering that there is, besides this species, only Pinus muricata growing 

 in that forest, which could not be confounded with the species in question— it 

 is certainly most singular to meet with so many synonyms for it. Pinus radi- 

 ata, Don. ; Pinus Sinclairii and Pinus tubermdata, provided this last should 

 not prove to be a good species. It is the more astonishing since trees and cones 

 are of great conformity throughout the entire forest. 



5. Pinus tuberculata, Don. 



Santa Cruz ! Ukiah ! Oakland hills ! Forest Hill ! Eureka ! ! 



In all these localities, it is a small tree, from twenty to thirty feet high, and 

 from six to fourteen inches in diameter. It retains its lowest branches, which 

 spread generally very much, often horizontally. The foliage seems to me less 

 dense and less vivid-green, than that of the preceding. Young trees raised 

 here, side by side, show the same differential characters. The cones from all 

 these different localities are very uniform, aud differ essentially from those of 

 Pinus -insignis at Monterey. The seeds, however, resemble each other very 

 much. Both species grow near the coast, but on different soil. Pinus insignis, 

 on a soil produced by the disintegration of a bituminous slate and granite ; 

 Pinus tuberculata, in all the above-mentioned localities, on a soil derived from 



