1908] Grinnell_—Biota of the San Bernardino Mountains. ff 
BOREAL. 
Pinus Murrayana Viola blanda 
Pinus flexilis Bryanthus Brewer 
Veratrum californicum Dodecatheon alpinum 
Populus (sp.?) Mimulus pilosellus 
Populus tremuloides Orthocarpus pilosus 
Castanopsis sempervirens* Pentstemon cwsius 
Spraguea umbellata Symphoricarpus Parishi 
Ranunculus oxynotus Hulsea vestita pygmea 
Draba corrugata Erigeron compositus discoi- 
Potentilla Wheelert deus 
Oxytropis oreophila 
DESCRIPTION OF LOCALITIES. 
Lower Santa ANA CANYON. 
The Lower Sonoran zone prevails in the wash below the exit 
of the Santa Ana river from the foothills near Mentone. And 
along the lower course of the Santa Ana canon up through the 
Narrows to the mouth of Bear creek, Lower Sonoran elements 
remain in evidence, though less and less so, giving way to Upper 
Sonoran. ‘Sycamores are the most conspicuous trees of the canon 
bottom, except close along the stream, which is usually overhung 
with willows or alders. The canon wall is more or less densely 
clothed with chaparral, including the usual shrubby plants of 
that belt in southern California. Common breeding birds along 
the lower Santa Ana, from just below its mouth up through the 
Narrows, 2500 feet elevation, were: white-throated swift, Costa 
hummingbird, black-chinned hummingbird, roadrunner, Texas 
nighthawk, black-chinned sparrow, Bell sparrow, Bullock oriole, 
Arizona hooded oriole, Anthony towhee, green-backed goldfinch, 
least vireo, western warbling vireo, lazuli bunting, dotted canon 
wren, rock wren and sparrow hawk. The Stejneger whip-tailed 
lizard was very common, as were also the fence lizard and the 
brown-shouldered lhzard. We found the days, June 11 and 12, 
*TIn another zone also. 
