74 University of California Publications. [botany 



Eriogonum nudum pauciflorum Wats. Naked-stem Eriogoimm. 

 Common throughout the Transition Zone. Robust, involu- 

 cres 3 lines high and many-flowered but alwaj'S solitary or in 

 pairs. (No. 2504.) 



Eriogonum saxatile Wats. 



This is one of the characteristic xerophytes that inhabit the 

 exposed, gravelly ridges running out from Tahquitz Peak. Not 

 found elsewhere. Its long, tough roots and densely tomentose 

 leaves and stem eminently fit it for the conditions under which 

 it exists. (Nos. 729, 2324.) 



Eriogonum stellatum Benth. 



Well distributed throughout the Transition Zone, blossoming 

 in August. 



Eriogonum Wrightii subscaposum Wats. 



Collected at Lake Surprise, Tahquitz Valley, and a few other 

 places above 7500 ft. alt. (No. 816.) 



Eriogonum Wrightii taxifolium (Greene) Parish, Erythea vi. 



87 (1898). E. taxifolium Greene, Pitt. i. 267 (1889) and ii. 



295 (1892). 



Common throughout the Lower Transition Zone, mostly 

 below 7000 ft. alt., flowering in Aug. and Sept. (No. 2608.) 



Oxyria digyna (L) Gamptd. Alpine Sorrel. 



This plant was not known to occur in Southern California 

 until it was discovered by Mr. S. L. Wight in Aug., 1897, on 

 San Jacinto Peak, where, more than any other species, it indi- 

 cates the presence of the Alpine Zone. It grows all along the 

 banks of perpetual snow, which lie just below the main peak on 

 the north side and therefore at the head of SnoAv Creek Canon. 

 It will be surprising if it is not sometime found on the cold 

 north side of Grayback Mt., which lies to the north of San 

 Jacinto, and is separated from it by a deep but narrow pass. 

 (Nos. 794, 2415.) 



Oxytheca caryophylloides Parry. 

 Collected at Fuller's mill. 



