Vol.11 Hall. — Botaniral Survey of San Jacinto Mountain. 



15 



PLANTS RESTRICTED TO THE LOWER TRANSITION ^ONE. 



Arctostaphylos Pringlei drupacea 

 Ceanothus integerrimus 

 Convolvulus villosus fulcratus 

 Cornus Xuttallii 

 Eriodietyon Parryi 

 Eriogonum stellatum 

 Euonymus Parishii 

 Fragaria Californica 

 Hypericum formosum 

 Kelloggia galioides 



Libocedrus decurrens 



Pinus Coulteri 



Potentilla glandulosa Nevadensis 



Prunus demissa 



Pseudotsuga macrocarpa 



Quereus Californica 



Kibes Nevadense 



Rhododendron occidentale 



Viola purpurea pinetorum 



PLANTS RESTRICTED TO THE UPPER TRANSITION ZONE. 



Aster Andersonii 

 Eulophus Parishii 

 Gilia pungens Hookeri 

 Panicularia nervata 



Philadelphus mierophyllus 

 Selinum eryngiifolium 

 Thalictrum Fendleri platyearpum 

 Trifolium Rusbyi 



CANADL\X AND HUDSOXIAN ZONES. 



It has seemed best to treat these two zones together since, as 

 a result of the peculiar topogi'aphy of the mountain, they are 

 very narrow, and the line between them cannot be definitely 

 drawn on account of the dearth of those characteristic species by 

 which they are usually distinguished. Taken together they are 

 found spreading out from the main peak over all the higher 

 parts of the mountain, with the exception of a small patch on 

 the very summit, which is occupied hy the Alpine Zone, and 

 extending down all the sides to altitudes of 8500 to 9000 feet, or 

 running even lower on the cold north side and at a few other 

 places. Tahquitz Peak, with its altitude of 8800 feet, bears on 

 its summit a dilute Canadian flora which is connected to the 

 main body only by a narrow band extending along the high ridge 

 of which this peak is the culminating point. 



Since the number of species of perennial plants restricted to 

 these zones is somewhat limited, while there are not a few that 

 are common to the Upper Transition and Canadian Zones, a list 

 of those belonging to each of these groups is added. 



PLANTS RESTRICTED TO THE UPPER TRANSITION AND CANADIAN ZONES. 



Agrostis tenuis 

 Antennaria speciosa 

 Dodecatheon alpinum 

 Gilia pungens 

 Monardella odoratissima 



Pedicularis semibarbata 

 Polygonum bistortoides 

 Potentilla lactea 

 Symphoricarpos Parishii 

 Veratrum speeiosum 



