Vauquelinia californica subsp. californica
Vauquelinia
Arizona rosewood
rosewood
1–10+, orientation unknown;
bark gray to dark gray, smooth, older plaited; short shoots absent; unarmed;
tomentulose to villous-canescent, hairs white, short, tightly crinkled, often tardily to soon glabrescent.
initially tomentulose, becoming canescent or tardily glabrate.
petiole (4–)7–15(–26) mm;
blade bicolor, abaxially white, adaxially green and lustrous, lanceolate to oblong-lanceolate or narrowly elliptic, (3.5–)4–9(–15) × (0.7–)1–2(–3.2) cm, surfaces initially villous-tomentulose, abaxially usually sparsely white-puberulent, hairs slightly coiled, sometimes glabrate or glabrous, adaxially mostly glabrate or glabrous.
persistent, cauline, erect-ascending to spreading, simple;
stipules tardily deciduous, free, subulate to narrowly deltate, margins entire, glandular;
petiole present;
blade oblong-elliptic or oblong-lanceolate to linear-lanceolate or linear to linear-oblong, (2.2–)3–13(–18.5) cm, leathery, margins flat, usually horny, serrate, serrulate, or crenulate, sometimes doubly serrate, rarely entire, venation pinnate and semicraspedodromous, surfaces tomentulose, sometimes glabrate or puberulent.
terminal or axillary, 15–25+-flowered, compound corymbs, puberulent to tomentulose;
bracts present;
bracteoles present.
present.
hypanthium 2–2.5(–3) × 2–3.7(–4.5) mm, exterior tomentulose or tardily glabrate, interior glabrous;
sepals 1.4–2.1 × 1.5–2.3 mm, puberulent-villous;
petals 4–5 × 2.5–3.5 mm;
filaments 3–5.5 mm.
perianth and androecium perigynous, 5–10 mm diam.;
hypanthium hemispheric, 1.5–2.5(–3) mm, leathery, sericeous, glabrescent, interior proximal surface nectariferous;
sepals 5, erect, broadly ovate;
petals 5, white, oblong-ovate to oblong-obovate, base clawed, apex rounded to emarginate;
stamens 18–20, shorter than petals;
torus thickened;
carpels 5, connate, free, strigose, styles terminal, distinct;
ovules 2.
capsules, broadly ovoid, 4.5–7.5 mm, woody, sericeous, ventrally (fully) and dorsally (in distal 1/2) dehiscent, splitting into 5 follicles;
hypanthium persistent;
sepals persistent, erect;
styles persistent.
5–6.5 × 3.5–4.5 mm.
4–5 × 1.2–1.3 mm.
2 per follicle, winged.
3–5(–12) × 3–8(–13) cm.
= 15.
= 30.
Vauquelinia californica subsp. californica
Vauquelinia
Subspecies californica shows considerable variation among populations, particularly with regard to vestiture, leaf size and shape, petiole length, and number of marginal teeth. Often populations within the same mountain ranges in Arizona share the same pattern of variation. Most of the populations have distinctly bicolor leaves, at least when young, or abaxially become weakly puberulent and persistently, closely tomentulose to canescent with tightly coiled hairs.
The name Vauquelinia torreyi S. Watson, which is illegitimate, pertains here.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Species 3 (2 in the flora).
Vauquelinia species are xerophytic. The third species in the genus, V. australis Standley, is known from Oaxaca and Puebla, Mexico.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaf margins serrulate or crenulate, teeth 10–35(–50) per 5 cm; sepal margins eglandular. | V. californica |
1. Leaf margins usually serrate, sometimes partly doubly serrate, rarely entire, teeth (3–)5–10(–14) per 5 cm; sepal margins glandular. | V. corymbosa |
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