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Leaves: alternate, persistent, composite (2 leaflets) 13-25 mm long; elliptical, dark "varnished" green, strong-scented (especially after rain)
Flowers: yellow, showy, spring (maybe after rain)
Fruit: five-celled white hairy capsule
Range: central and southwestern Ariz., less than 1220 m elevation; west Texas-California
Importance: most common xerophyte of Sonoran Desert in Southwest; ordinarily untouched by livestock; toxic to some livestock
Best Recognized Features:
1. Dark green, lustrous, paired leaves, 13 mm long
2. Leaves 2-pinnate
3. Strong "creosote" odor
Very similar to L. divaricata of South America; maybe same species