VOL. IV.] Trees of Southern California. 351 



Diego County; until recently the only known locality for this 

 species, but a second small grove has been discovered on Santa 

 Rosa Island. 



Pimis ponder osa Dougl. "Yellow Pine." Noble tree 200 

 feet high, with a trunk diameter of six feet. Fls. June. Ridges 

 and slopes, or of a larger size on flats, at from 4000 to 1 1,000 feet 

 altitude, throughout the San Bernardino Range, the San Jacinto 

 and Cuyamaca Mountains, forming the greater part of the con- 

 iferous forest. 



Pi7ius Jeffrey i Balf. " Black Pine." Denser-headed tree, 75 

 feet high, the trunk 3 feet in diameter. Range of the last, 

 usually on flats or near streams; scattered and not abundant, and 

 probably absent above 8000 feet altitude. 



Finns Murrayana Balf. Spreading tree 50 feet high, trunk- 

 diameter, 2 feet. Grayback Mountain, scattered through the 

 upper part of the yellow pine belt, between 10,000 and 11,000 

 feet altitude. ( Wright?) A few small groups on low gravelly 

 points at the lower end of Bear Valley, in the San Bernardino 

 Mountains, at 6000 feet altitude. 



Pinus Sabhiiana Dougl. ' ' Sierra La Liebre, descending 

 nearly to Antelope Valley." Merriam,^. A. Fauna vii, 336. 

 This is the only authentic locality in the Southern counties. It 

 has been reported (Orcutt, ist Calif. For. Rept., 50) from San 

 Diego County, but apparently erroneously. 



Pinus Coidteri Don. "Big-cone Pine, Bull Pine." Some- 

 what spreading tree, 50 feet high, trunk-diameter 2^ feet. 

 Usually on dry ridges, less frequently on gravelly benches (Mill 

 Creek), at from 5000 to 6000 feet altitude, in the San Bernardino 

 and San Jacinto Mountains. 



Pinns tuberadata Gordon. P. attenuata Lemmon, Min. & Sci. 

 Press, Jan. 16, 1892; Gard. & For. v. 65; N. Am. Conebearers 

 10; Erythea i, 229. Sudworth U. S. For. Rept. 1892, 329. 

 Coville Death V. Rept. 221. Regular and handsome tree, 

 branched from the ground, 15 feet high, trunk, 8 inches 

 in diameter. An interrupted belt, 5 miles long and one- 

 half mile wide along the southern slope of the San Bernardino 

 Mountains, at about 3000 feet altitude, from East Twin Creek to 



