Leucophyllum candidum
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.
Distribution
Tex., Mexico (Chihuahua), Mexico (Coahuila), Mexico (Durango), Mexico (Zacatecas)
Discussion
Leucophyllum candidum is known in the flora area only from Brewster County.
Selected References
None.
Lower Taxa
"dm" is not declared as a valid unit of measurement for this property.