Vauquelinia californica subsp. sonorensis |
Rosaceae subfam. amygdaloideae |
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Sonora rosewood |
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Habit | Shrubs or trees, sometimes subshrubs or herbs. | |
Young stems | densely white-tomentulose, becoming canescent. |
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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. |
alternate, sometimes opposite, simple, sometimes pinnately compound; stipules present or absent. |
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. |
torus absent or minute; carpels 1–5(–8), distinct or +/- connate (Maleae), free or +/- adnate to hypanthium (many Maleae), styles distinct or +/- connate (some Maleae); ovules (1 or)2(–5+), collateral, clustered, or biseriate. |
Fruits | follicles aggregated or not, capsules, drupes aggregated or not, aggregated drupelets, pomes, or aggregated nutlets, rarely achenes or aggregated achenes; styles persistent or deciduous, not elongate (elongate in Gillenieae). |
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Capsules | 5–6 × 3.5–4 mm. |
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Seeds | 3.5–4 × 0.9–1.2 mm. |
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Corymbs | 1.5–4.5 × 2–6.5 cm, villous to tomentulose. |
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x | = 8, 9, 15, 17. |
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Vauquelinia californica subsp. sonorensis |
Rosaceae subfam. amygdaloideae |
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Phenology | Flowering spring. | |
Habitat | Canyon margins and hillsides of the Sonoran Desert | |
Elevation | 700–1500 m (2300–4900 ft) | |
Distribution |
AZ; Mexico (Baja California) |
HI; North America; Mexico; Central America; South America; Europe; Asia; Africa; Atlantic Islands (Madeira); Australia |
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.) |
Cyanogenic glycosides are usually present in Amygdaloideae; sorbitol is present. The name Amygdaloideae Arnott (1832) has priority over Spiraeoideae Arnott (1832), used by D. Potter et al. (2007), because Amygdalaceae (1820) is an earlier conserved name. Tribes 9, genera 55, species ca. 1300 (9 tribes, 38 genera, 361 species, including 20 hybrids, in the flora) (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 9, p. 431. | FNA vol. 9, p. 345. |
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Sibling taxa | ||
Subordinate taxa | ||
Name authority | W. J. Hess & Henrickson: Sida 12: 130, figs. 11a–c. (1987) | Arnott: Botany, 107. (1832) |
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