YELLOW
Brickellia coulteri
Brickellia californica
Common Names: BRICKELLBUSH, DESERT BRICKELLIA, (PACHABA) Arizona desert: (Brickellia coulteri). Yellow-white. September. California desert: (Brickellia desertorum). Pale yellow. Midsummer. Texas-New Mexico deserts: (Brickellia californica). Yellow-white. July-October. Sunflower family. Size: Small, much-branched perennial shrub, up to 3 feet in height.
Intricately branched and brittle-stemmed, this shrub with blossom heads holding from 8 to 18 yellowish flowers is common throughout the Southwest from western Texas and Colorado to Nevada, Sonora and Lower California.
It grows among rocks and in rocky locations throughout much of the desert country from 3,000 up to 7,000 feet.
YELLOW
Zinnia pumila
Common Names: WILD-ZINNIA Arizona and Texas deserts: (Zinnia pumila). Pale yellow. April-October. Sunflower family. Size: Low, dense-growing perennials in rounded clumps, 4 to 8 inches high.