J. Arnold Arbor. 22: 120. 1941.
Shrubs erect, not intricately branched, rounded, 3–10 (–15) dm, not appearing thorny. Young stems irregularly canescent-tomentose, hairs conic to cylindric, dendritic, uneven in height. Leaves alternate or subopposite, sometimes opposite near stem apices; petiole 1–3 (–6) mm; blade broadly obovate to obovate-orbiculate, reniform, or ovate, 6–10 (–16) mm, base rounded to cuneate, veins not prominently raised abaxially, surfaces densely equally silvery-gray-tomentose or irregularly canescent-tomentose, hairs conic to cylindric, dendritic, uneven in height. Flowers: calyx lobes oblong to oblong-lanceolate, 2.5–5 (–6) mm; corolla dark to light violet-purple, campanulate, (10–) 12–22 (–25) mm, tube not notably narrowed. 2n = 68.
Phenology: Flowering (Apr–)May–Sep.
Habitat: Limestone hills, canyons, steep slopes, gravelly slopes, flats, roadsides.
Elevation: 600–1200 m.
Tex., Mexico (Chihuahua), Mexico (Coahuila), Mexico (Durango), Mexico (Zacatecas)
Leucophyllum candidum is known in the flora area only from Brewster County.