A gray horsebrush in full bloom, its woolly silver foliage topped with clusters of yellow flower heads, Mono County, California. Photo: Dcrjsr, Wikimedia Commons (CC
Cooper’s box thorn growing among Joshua trees near State Line Pass on the California-Nevada border. Photo: Stan Shebs, Wikimedia Commons (CC BY-SA 3.0) Lycium cooperi,
A compact, rounded mound of black sagebrush on shallow gravelly soil near Lee Canyon, Nevada. Photo: Stan Shebs, Wikimedia Commons (CC BY-SA 3.0) Artemisia nova,
A mature allscale saltbush shrub on open desert ground, its intricate silvery branching typical of the species. Photo: Felagund, Wikimedia Commons (CC BY-SA 3.0) Atriplex
Thick-leaf yerba santa in bloom, its lavender flower clusters held above the woolly foliage. Photo: Stickpen, Wikimedia Commons (Public domain) Eriodictyon crassifolium, commonly called thick-leaf
Southern honeysuckle’s small, pale yellow flowers open in loose clusters along the stem. Photo: Stickpen, Wikimedia Commons (Public domain) Lonicera subspicata, commonly known as southern
A cheesebush in full bloom, its rounded form smothered in pale flower clusters. Photo: Stan Shebs, Wikimedia Commons (CC BY-SA 3.0) Ambrosia salsola (long known
A bush rue shrub flowering within coastal sage scrub at Torrey Pines, San Diego County. Photo: Krzysztof Ziarnek, Kenraiz, Wikimedia Commons (CC BY-SA 4.0) Cneoridium
A mature ashy silktassel forms a dense, rounded mound of gray-green foliage on rocky desert slopes. Photo: Stan Shebs, Wikimedia Commons (CC BY-SA 3.0) Garrya
A mature Scouler’s willow in catkin, growing as a rounded shrub on a well-drained forest opening. Photo: Dave Powell, USDA Forest Service (Public domain) Salix
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