284 Part III. Chapter 3. 
flora is marked by senecioid and ligulate Compositae, species of Astragalus, 
Oenothera, Gilia, Hydrophyllaceae and annual Erigoneae‘). “The mountains 
La 
BILIOHT) 
some Ss '[ fq ydeıdojoyd wor} (AT Pejd 91) vungg ueanawy ynoN Iayy 
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‘gjsuyg Junom uo auıploqwıf, Jo Nwrf add swarxg ay} 0} usuo]L ® se Zumpusyxa 'wpadug sıymosıgw smury 
are as destitute of trees as the valleys. Pinus monophylla, Funiperus occiden- 
talıs (5000—7000 feet), Cercocarpus ledifolius (6000— 8000 feet), Populus BIN 
muloides (in upper canyons), Populus balsamifera var. angustifolia, Pinus ‚Rexilßs, 
1) WATSON, SERENO: Botany, U. S. Geological Exploration of the Fortieth Parallel. 871. 
