Leucophyllum frutescens
Family: Scrophulariaceae (Figwort Family)
AKA: Purple Sage, Texas Ranger, Texas Barometer Bush, Texas Silverleaf, Texas Sage, Silverleaf
Wildlife benefit: nectar attracts insects
Larval host: Theona Checkerspot, Calleta silkmoth
More info: https://www.wildflower.org/plants/result.php?id_plant=LEFR3
Photos: https://www.wildflower.org/gallery/species.php?id_plant=LEFR3