University of California Publications in Zoology. |Vou- 
Upper SONORAN. 
Juniperus occeidentalist* 
Pseudotsuga macrocarpay 
Pinus Coulteri} 
Pinus monophyllat 
Ephedra viridist 
Populus trichocarpay* 
Salix lasiolepis* 
Alnus rhombifoliay* 
Quercus dumosa 
Quercus chrysolepis 
Eriogonum fasciculatumy* 
Umbellularia californicay 
Purshia glandulosat 
Adenostoma. fasciculatumy* 
Amelanchier alnifoliat 
Cercocarpus betulafoliusy 
Juniperus occidentalist 
Cercocarpus ledifoliust* 
Prunus fasciculata 
Rhus trilobatay 
Ceanothus divaricatus+ 
Ceanothus integerrimust 
Ceanothus perplexans 
Garrya Veatchi 
Arctostaphylos manzanita 
Briodictyon trichocalyx* 
Monardella lanceolata 
Salvia carnosa compactay 
Nicotiana attenuatat 
Pentstemon ternatusy 
Artemisia tridentatat* 
Tetradymia canescenst* 
TRANSITION. 
* 
Abies concolor 
Libocedrus decurrens+ 
Pinus ponderosa 
Pinus Jeffreyt 
Pinus Lambertiana; 
Tilium Parryt+ 
Populus trichocarpa 
+ * 
Populus angustifolia 
Salix Bigelovirt 
Sali: 
cv lasiolepis* 
Alnus rhombifoliay* 
Castanopsis sempervirens* 
Quercus californica 
Urtica holosericea 
Aquilegia truncata 
Clematis ligusticifoliay 
Ribes cereum 
Cercocarpus ledifoliust* 
Rubus parviflorus 
Fragaria californicat 
Y 
+ 
' 
In another zone also. 
Pacifie slope only or chiefly. 
Desert slope only or chiefly. 
Prunus demissay 
Amorpha califormecay 
Linum Lewisiiy 
Acer glabrumy 
Ceanothus cordulatus 
Cornus occidentalis 
Sarcodes sanguinea 
Arctostaphylos patula 
Eriodictyon trichocalyx* 
Monardella linoides stricta 
Pedicularis semibarbata 
Pentstemon Palmeri 
Pentstemon labrosus 
Antennaria speciosat 
Artemisia tridentatat* 
Chrysothamnus tortifolius 
Tetradymia canescens * 
Carduus Drummond acaules- 
CONS. 
Solidago californica 
