LORQUINIA 
19 
QuKRCUs BRKWKRi, Kngelmann. (Brewer Oak or Shin Oak). 
This low growing oak is found on mountain slopes in dry gravelly 
soils among low chaparral brush. It is found in extensive thickets on 
the upper San Joaquin River at about 6000 feet altitude. It is also 
found in the Kaweah River Valleys. 
QuERCus ARRYANA, Hooker. (Garry Oak). The Garry oak is 
found in Northern California in valleys and on prairies in deep humus 
soils. It is not common on dry hill and mountain slopes, usually be- 
ing small and scrubby when found in dry gravelly and rocky soils. It 
occurs frequently with Quercus morehus, Kellogg; Douglas Fir (Pseu- 
dotsuga taxifolia, Poir.) Britt. Madronas [Arbutus menziesiU Pursh.) and 
Western Yellow Pine {Pinus ponderosa, Lawson). The species extends 
through Oregon and Washington to British Columbia, where it be- 
comes a larger tree. 
Quercus sadleriana, (R. Brown) Campst. There appears to be 
no common name for this species except Scrub Oak, as it does not ex- 
ceed six feet in height. It occurs on high dry slopes at about 8000 
feet in altitude in Del Norte County, where it produces very dense 
thickets. 
Quercus douglasii, Hooker and Arnott. (Blue Oak). Very 
appropriately is this tree called Blue Oak on account of the blueish 
green color of its foliage. This oak is also known as white oak, be- 
cause of the gray appearance of its bark. The mature leaves and acorns 
are very variable, the latter being produced in one season. This oak 
occurs very extensively in various parts of California on low foothills 
and in valleys in dry gravelly and rocky soils, usually growing with 
Post Oaks, the California Live Oak and the Sabine Pine (Pinus sahiniana, 
Douglas.) 
Quercus aIvVordiana, Eastwood. (Alvord's Oak). This is a 
comparatively newly found species, occurring on hills near the desert 
in Southern California. A small shrub with very brittle leaves, being 
broken very easily upon being touched. It is probably closely related 
to Quercus dumosa, Nuttall. 
Quercus dumosa, Nuttall. (California Scrub Oak). This oak 
varies more than any other species, with the possible exception of 
Qitercus undulata, Torrey, of the Rocky Mountains. Several varities 
have been singled out by different botanists, but they are hopelessly 
confused. The species occurs on low mountains and foothills from 
Central to Lower California. It tolerates the poorest and driest gravelly 
soils and, in many instances, may be found growing in crevices of rocks. 
