Young stems densely white-tomentulose, becoming canescent. Leaves: petiole (4–) 6–16 (–22) mm; blade bicolor, abaxially white, adaxially green and nonlustrous, linear to linear-lanceolate, (2.5–) 5–11 (–15) × (0.6–) 0.7–1.2 (–1.4) cm, surfaces villous-tomentulose, soon or tardily glabrescent except for hairy midveins. Corymbs 1.5–4.5 × 2–6.5 cm, villous to tomentulose. Flowers: hypanthium 2–2.5 × 3–3.5 mm, exterior white villous-tomentulose, interior glabrous except at base; sepals 1.3–1.8 × 1.6–2 mm, villous-tomentulose; petals 4–5 × 2.4–3 mm; filaments 3–5 mm. Capsules 5–6 × 3.5–4 mm. Seeds 3.5–4 × 0.9–1.2 mm.

Phenology: Flowering spring.
Habitat: Canyon margins and hillsides of the Sonoran Desert
Elevation: 700–1500 m

Distribution

• Generated Map
• Legacy Map

Ariz., Mexico (Baja California)

Discussion

Subspecies sonorensis is known from the Ajo Mountains in Pima County. Some plants from the Baboquivari Mountains of Pima County have somewhat similar narrow leaves but lack the dense vestiture on stems, inflorescences, and abaxial leaf surfaces.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.