Vitis arizonica |
Vitis acerifolia |
|
---|---|---|
canyon grape |
bush or panhandle or mapleleaf grape, mapleleaf grape |
|
Habit | Plants sprawling to low climbing, shrubby, much branched. | Plants low to moderately high climbing, much 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 tardily exfoliating in plates; nodal diaphragms to 0.5(–1) mm thick; branchlets terete, whitish arachnoid or glabrate, growing tips enveloped by unfolding leaves, sparsely to densely hairy; 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. |
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 3–6 mm; petiole 1/2–2/3 blade; blade broadly cordate, 7–12 cm, usually 3-shouldered to shallowly 3-lobed, apex usually short acuminate, abaxial surface not glaucous, sparsely arachnoid to glabrate, visible through hairs, veins sparsely hirtellous, adaxial surface slightly arachnoid to glabrate. |
Inflorescences | 4–12 cm. |
3–7(–9) cm. |
Flowers | functionally unisexual. |
functionally unisexual. |
Berries | black, slightly or not glaucous, globose, 6–10 mm diam., skin separating from pulp; lenticels absent. |
black, heavily glaucous, globose, 8–12 mm diam., skin separating from pulp; lenticels absent. |
2n | = 38. |
= 38. |
Vitis arizonica |
Vitis acerifolia |
|
Phenology | Flowering Apr–Jun; fruiting Jul–Oct. | Flowering Apr–May; fruiting Jul–Aug. |
Habitat | Stream banks, canyon bottoms. | Stream and riverbanks, prairie ravines, alluvial floodplain woodlands, dunes, rocky slopes, fencerows. |
Elevation | 400–3000 m. (1300–9800 ft.) | 200–2300 m. (700–7500 ft.) |
Distribution |
AZ; NM; NV; TX; UT; Mexico (Chihuahua, Coahuila, Nuevo León, Sinaloa, Sonora)
|
CO; KS; NM; OK; TX |
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.) |
|
Source | FNA vol. 12, p. 13. | FNA vol. 12, p. 11. |
Parent taxa | Vitaceae > Vitis > subg. Vitis | Vitaceae > Vitis > subg. Vitis |
Sibling taxa | ||
Synonyms | V. arizonica var. galvinii, V. arizonica var. glabra, V. treleasei | V. cordifolia var. solonis, V. longii, V. longii var. microsperma, V. nuevomexicana, V. solonis, V. solonis var. microsperma |
Name authority | Engelmann: Amer. Naturalist 2: 321. (1868) | Rafinesque: Med. Fl. 2: 130, plate 99, fig. C. (1830) |
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