USA, Arizona, Pinal County, About 18 aerial miles due E of Florence, along Withlow Ranch Road.
33.001389 -111.288889
33d 0m 5s N; 111d 17m 20s W
701 metros
2300ft.
Upper Sonoran Desert
Carnegia gigantea, Prosopis juliflora, cercidium floridum, C. microphyllum, opuntia leptocaulis, C. acanthocarpa var. major, C. fulgida, C. arbuscula, Opuntia enegelmannii var. engelmannii, O. phaeacantha, Larrea tridentata, Lycium spp, Viguiera sp..
Shrub to 1.30m tall, branches ascending, with a defined trunk; stem segments elliptic; flowers yellow.