Life … Plants Vascular Plants Monocots Agaves, Orchids, Irises, and Allies Agave and Allies Sotols Smooth Sotol species 1,960 observations Smooth Sotol Dasylirion leiophyllum Field notes Range United States Greener is more native, amber more introduced; paler is less certain. How this was decided Key traits Layer Shrubs Light Full sun Moisture Dry Water use Low Plant type Perennial Shrub From USDA PLANTS and the Lady Bird Johnson Wildflower Center. Close