Flora of North America species comparison

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Vitis arizonica

Vitis californica

canyon grape

California wild, California wild grape, northern California grape, Pacific, Pacific grape, western wild grape
Habit Plants sprawling to low climbing, shrubby, much branched. Plants high climbing, sparsely branched.
Branches

bark exfoliating in plates;

nodal diaphragms 1.5–3 mm thick;

branchlets slightly angled when young, becoming terete, arachnoid or arachnoid-floccose, sometimes glabrescent, growing tips not enveloped by unfolding leaves;

tendrils along length of branchlets, soon deciduous if not attached to support, branched, tendrils (or inflorescences) at only 2 consecutive nodes;

nodes not red-banded.

bark exfoliating in plates;

nodal diaphragms 3–4 mm thick;

branchlets terete to slightly angled, tomentose, tomentum thinning in age, sometimes also hirtellous, growing tips not enveloped by unfolding leaves;

tendrils along length of branchlets, persistent, branched, tendrils (or inflorescences) at only 2 consecutive nodes;

nodes not red-banded.
Leaves

stipules 1.5–3 mm;

petiole 1/2 to ± equaling blade;

blade cordate to cordate-ovate, 5–12 cm, usually unlobed to 3-shouldered, sometimes shallowly 3-lobed, apex acute to acuminate, abaxial surface not glaucous, moderately to sparsely arachnoid, visible through hairs, veins and vein axils sometimes only hirtellous, adaxial surface sparsely arachnoid or glabrous.

stipules usually less than 3.5 mm;

petiole ± equaling blade;

blade cordate to orbiculate or nearly reniform, 7–15 cm, unlobed or shallowly 3–5-lobed, apex acute to short acuminate, abaxial surface not glaucous, moderately to sparsely tomentose, visible through hairs, adaxial surface sparsely tomentose to glabrate.
Inflorescences

4–12 cm.

5–10 cm.
Flowers

functionally unisexual.

functionally unisexual.
Berries

black, slightly or not glaucous, globose, 6–10 mm diam., skin separating from pulp;

lenticels absent.

purple to black, moderately to heavily glaucous, globose, 8–10 mm diam., skin separating from pulp;

lenticels absent.
2n

= 38.

= 38.

Vitis arizonica

Vitis californica
Phenology Flowering Apr–Jun; fruiting Jul–Oct. Flowering May–Jun; fruiting Aug–Sep.
Habitat Stream banks, canyon bottoms. Stream banks, perennial springs, canyons.
Elevation 400–3000 m. (1300–9800 ft.) 10–1500 m. (0–4900 ft.)
Distribution
from FNA
AZ; NM; NV; TX; UT; Mexico (Chihuahua, Coahuila, Nuevo León, Sinaloa, Sonora)
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Vitis arizonica is variable and intergrades with V. girdiana in southern Nevada; it is in need of in-depth field and experimental studies. Some authors have recognized two varieties of this species (vars. arizonica and glabra), but the characters used to distinguish them intergrade so freely that their recognition does not seem justified.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Vitis californica occurs in central and northern California (from San Luis Obispo to Inyo counties north) to southern Oregon. It is variable and intergrades with V. girdiana in southern California, and hybridizes with both V. girdiana and V. vinifera, often making identification difficult.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 12, p. 13. FNA vol. 12, p. 12.
Parent taxa Vitaceae > Vitis > subg. Vitis Vitaceae > Vitis > subg. Vitis
Sibling taxa
V. acerifolia, V. aestivalis, V. californica, V. cinerea, V. girdiana, V. labrusca, V. monticola, V. mustangensis, V. palmata, V. riparia, V. rotundifolia, V. rupestris, V. shuttleworthii, V. vinifera, V. vulpina, V. ×champinii, V. ×doaniana, V. ×novae-angliae
V. acerifolia, V. aestivalis, V. arizonica, V. cinerea, V. girdiana, V. labrusca, V. monticola, V. mustangensis, V. palmata, V. riparia, V. rotundifolia, V. rupestris, V. shuttleworthii, V. vinifera, V. vulpina, V. ×champinii, V. ×doaniana, V. ×novae-angliae
Synonyms V. arizonica var. galvinii, V. arizonica var. glabra, V. treleasei
Name authority Engelmann: Amer. Naturalist 2: 321. (1868) Bentham: Bot. Voy. Sulphur, 10. (1844)
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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