Vitis arizonica |
Vitis ×novae-angliae |
|
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canyon grape |
New England grape, pilgrim 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 shreds; nodal diaphragms 0.3–1.1 mm thick; branchlets terete, sparsely arachnoid or glabrous, growing tips not enveloped by unfolding leaves; tendrils along length of branchlets, persistent, branched, tendrils (or inflorescences) at 3+ consecutive nodes, usually not at all 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 2.5–6 mm; petiole 1/2 to ± equaling blade; blade cordate, 10–20 cm, usually 3-shouldered, apex acute to short acuminate, abaxial surface not glaucous, ± densely arachnoid when young, sparsely arachnoid when mature, visible through hairs, adaxial surface usually glabrous. |
Inflorescences | 4–12 cm. |
7–13 cm. |
Flowers | functionally unisexual. |
functionally unisexual. |
Berries | black, slightly or not glaucous, globose, 6–10 mm diam., skin separating from pulp; lenticels absent. |
black, slightly glaucous, globose, 12+ mm diam., skin separating from pulp; lenticels absent. |
2n | = 38. |
|
Vitis arizonica |
Vitis ×novae-angliae |
|
Phenology | Flowering Apr–Jun; fruiting Jul–Oct. | Flowering Jun; fruiting Aug–Sep. |
Habitat | Stream banks, canyon bottoms. | Thickets, roadsides, pond and stream margins, fence- and hedgerows. |
Elevation | 400–3000 m. (1300–9800 ft.) | 70–1400 m. (200–4600 ft.) |
Distribution |
AZ; NM; NV; TX; UT; Mexico (Chihuahua, Coahuila, Nuevo León, Sinaloa, Sonora)
|
CT; MA; ME; NH; NJ; NY; PA; RI; VT; ON |
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 ×novae-angliae is a presumed hybrid between V. labrusca and V. riparia and is common in the New England region (M. O. Moore 1991). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 12, p. 13. | FNA vol. 12, p. 9. |
Parent taxa | Vitaceae > Vitis > subg. Vitis | Vitaceae > Vitis > subg. Vitis |
Sibling taxa | ||
Synonyms | V. arizonica var. galvinii, V. arizonica var. glabra, V. treleasei | |
Name authority | Engelmann: Amer. Naturalist 2: 321. (1868) | Fernald: Rhodora 19: 146. (1917) — as species |
Web links |