The vegetation of a desert mountain range as conditioned by climatic factors . WASHINGTON, D. C. Published by the Carnegie Institution of Washington1915 _,^ fl* ^^^ CARNEGIE INSTITUTION OF WASHINGTONPublication No. 217 Copies of this Bo<^were first issued OCT 2 8 1915 PRESS OF J. B. LIPPINCOTT COMPANYPHILADELPHIA ^- ^tate Col/ege CONTENTS. PAOE. Introduction 5 Geography and Topography of the Santa Catalina Mountains 6 Vegetation of the Santa Catalina Mountains 11 The Desert Region 15 The Upper Bajadas 15 The Desert Arroyos and Canons 19 The Lower Desert Slopes 22 The Upper Desert Slopes 23
The vegetation of a desert mountain range as conditioned by climatic factors . WASHINGTON, D. C. Published by the Carnegie Institution of Washington1915 _,^ fl* ^^^ CARNEGIE INSTITUTION OF WASHINGTONPublication No. 217 Copies of this Bo<^were first issued OCT 2 8 1915 PRESS OF J. B. LIPPINCOTT COMPANYPHILADELPHIA ^- ^tate Col/ege CONTENTS. PAOE. Introduction 5 Geography and Topography of the Santa Catalina Mountains 6 Vegetation of the Santa Catalina Mountains 11 The Desert Region 15 The Upper Bajadas 15 The Desert Arroyos and Canons 19 The Lower Desert Slopes 22 The Upper Desert Slopes 23 The Encinal Region 24 The Lower Encinal 25 The Upper Encinal 27 The Forest Region 29 The Pine Forest 31 The Fir Forest 33 Flora of the Santa Catalina Mountains 36 Phytogeographic Relationships of the Flora 36 The Desert Flora 36 The Encinal Flora 38 The Forest Flora 39 List of Characteristic Species 41 CUmate of the Santa Catalina Mountains 46 Rainfall 48 Seasonal Distribution of Rainfall 48 Altitudinal Increase of Rainfall 51 Soil Moisture 59 Evaporation 63 Humidity 67 Temvegetationofdese00shre
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