1908] Grinnell—Biota of the San Bernardino Mountains. 43 
Covillea tridentata (De Candolle) M. Vail. 
The creosote bush was the most abundant plant on the desert 
around Cushenbury springs, 4000 feet, at the desert base of the 
mountains. 
Sphaeralcea ambigua Gray. 
This conspicuous red-flowered mallow was blooming commonly 
during the middle of August on desert-facing slopes; Cactus Flat 
and Doble up to 7300 feet altitude. 
Viola blanda Willdenow. 
This small white violet was scattered profusely over the Boreal 
cienagas at the head of the South Fork of the Santa Ana, 8000 
to 8500 feet. It was in bloom the last of June and early July. 
Oenothera Hookeri Torrey & Gray. 
This large yellow evening primrose was abundant in pastures 
around Seven Oaks, and along the upper Santa Ana to 6200 feet 
altitude. 
Oenothera californica Watson. 
This large white evening primrose was abundant in July at 
the head of Mountain Home ereek and along the upper Santa 
Ana in the lower Transition zone. 
Cornus occidentalis (Torrey & Gray) Coville. 
I saw the dogwood only in Fish creek canon, where it was in 
bloom along the main stream and its tributaries, 6600 to 7000 feet 
altitude, June 15 to 30. 
Garrya veatchii Kellogg. 
The ironwood was common in the Upper Sonoran brush belt, 
towards its upper margin, but not encroaching upon the Tran- 
sition zone. It was conspicuous in the chaparral near Seven 
Oaks and along the north wall of the upper Santa Ana to an 
elevation of 6000 feet. It was also common on the north side 
of Gold mountain at about 7000 feet. 
