Vol. ij Hall. — Botanical Survey of San Jacinto Mountain. 83 



Streptanthus campestris Wats. 



Occasional in the open forests at 5500-6000 ft. alt. (No. 

 2243.) 



Thysanocarpus curvipes Hook. Fringe-pod. 



Beneath the pines of the south side this plant was found to 

 occur at a few places, the highest of which was in Onstatt Valley 

 at 6500 ft. alt. (Nos. 2027, 2217.) 



CRASSULACEiE. 



Cotyledons laxa B. d- H. 



Occasional on open or rocky slopes in the vicinity of Straw- 

 berry Valley. (No. 2526.) 



Sedum obtusatum (inty. Stone-crop. 



Collected only on the walls of the rocky canon through which 

 Strawberry Creek dashes at 5000 ft. alt. This is along the lower 

 limits of the Transition Zone. (No. 734.) 



SAXIFRAGACE^. 



Heuchera rubescens Torr. Alum Root. 



This occurs plentifully with the last; also near the lower end 

 of Hemet Lake (ace. to Mrs. F. C. R. Price), on Tahquitz Peak, 

 and is abundant among the rocks around San Jacinto Peak. Its 

 range is therefore from the Lower Transition to the Hudsonian 

 Zone. (Nos. 702, 2412.) 



Philadelphus serpyllifolius Gray, PI. Wright, i. 77 (1852) 



andii. 64 (1852). 



Very common among rocks in the Upper Transition from 

 Lake Surprise to the head of Round Valley. It is most 

 plentiful on ridges overlooking the Colorado Desert at 8000-9000 

 ft. alt., where the low bushes, covered with a profusion of white 

 flowers, are very conspicuous on the rocky walls in August and 

 September. (Nos. 800, 2500). 



This plant, the type locality of which is New Mexican, was 

 collected on San Jacinto Mt. in 1892 by Mr. F. P. Hosp, and has 



