Flora of North America species comparison

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Vauquelinia californica subsp. sonorensis
Photo is of parent taxon

Sonora rosewood
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.
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.
Corymbs

1.5–4.5 × 2–6.5 cm, villous to tomentulose.

Vauquelinia californica subsp. sonorensis
Phenology Flowering spring.
Habitat Canyon margins and hillsides of the Sonoran Desert
Elevation 700–1500 m (2300–4900 ft)
Distribution
from FNA
AZ; Mexico (Baja California)
[BONAP county map]
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 9, p. 431.
Parent taxa Rosaceae > subfam. Amygdaloideae > tribe Maleae > Vauquelinia > Vauquelinia californica
Sibling taxa
V. californica subsp. californica, V. californica subsp. pauciflora
Name authority W. J. Hess & Henrickson: Sida 12: 130, figs. 11a–c. (1987)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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