Vitis vulpina |
Vitis rupestris |
|
---|---|---|
chicken grape, fox grape, frost grape, vigne des renards, wild grape, winter grape |
rock grape, sand grape |
|
Habit | Plants moderate to high climbing, sparsely branched. | Plants sprawling to low climbing, shrubby, much branched. |
Branches | bark exfoliating in shreds; nodal diaphragms 1–2.5 mm thick; branchlets gray to green or brown, if purplish only on one side, terete, glabrous, growing tips not enveloped by unfolding leaves, glabrous or sparsely hairy; tendrils along length of branchlets, persistent, branched, tendrils (or inflorescences) at only 2 consecutive nodes; nodes not red-banded. |
bark tardily exfoliating in plates; nodal diaphragms to 1 mm thick; branchlets terete, usually glabrous, sometimes sparsely hirtellous, growing tips enveloped by unfolding leaves; tendrils absent or only at distalmost nodes, 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 ± equaling blade; blade cordate, (5–)9–18 cm, usually unlobed or shallowly 3-lobed, sometimes deeply lobed on ground shoots, apex acute to short acuminate, abaxial surface not glaucous, glabrous, visible, veins and vein axils sometimes hirtellous, adaxial surface usually glabrous, sometimes sparsely hirtellous. |
stipules 3–6.5 mm; petiole 1/2 blade; blade reniform, conduplicately folded, 5–10 cm, apex acute to short acuminate, usually 3-shouldered, rarely shallowly 3-lobed, abaxial surface not glaucous, usually glabrous, visible through hairs, veins and vein axils sometimes sparsely hirtellous, adaxial surface usually glabrous. |
Inflorescences | 9–19 cm. |
4–7 cm. |
Flowers | functionally unisexual. |
functionally unisexual. |
Berries | black, usually not, sometimes very slightly, glaucous, globose, 8–12 mm diam., skin separating from pulp; lenticels absent. |
black, slightly glaucous, globose, 8–12 mm diam., skin separating from pulp; lenticels absent. |
2n | = 38. |
= 38. |
Vitis vulpina |
Vitis rupestris |
|
Phenology | Flowering May; fruiting Jul–Aug. | Flowering Apr–May; fruiting Aug–Sep. |
Habitat | Upland forests, floodplain forests, woodland borders, prairies, fencerows, thickets, roadsides. | Gravelly banks, river bottoms, stream beds, washes, often calcareous soils. |
Elevation | 0–2000 m. (0–6600 ft.) | 70–500 m. (200–1600 ft.) |
Distribution |
AL; AR; DC; DE; FL; GA; IA; IL; IN; KS; KY; LA; MD; MI; MO; MS; NC; NE; NJ; NY; OH; OK; PA; SC; SD; TN; TX; VA; WV; ON
|
AR; DC; IN; KY; MD; MO; OK; PA; TN; TX; VA; WV |
Discussion | Vitis rupestris once was widely scattered throughout most of its range, but now mostly is rare and may have been extirpated in many locations, apparently due to habitat loss. It is most common in the Ozark region of northern Arkansas and the southern half of Missouri, but is imperiled elsewhere (http://explorer.natureserve.org). It is persisting from cultivation in California and some other locations (J. Wen, pers. obs.; E. B. Wada and M. A. Walker, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=48433). Reports from Illinois were based on misidentifications (R. H. Mohlenbrock 2014). The species was used to develop many grape hybrids due to its resistance to disease (J. Gerrath et al. 2015) (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 12, p. 15. | FNA vol. 12, p. 10. |
Parent taxa | Vitaceae > Vitis > subg. Vitis | Vitaceae > Vitis > subg. Vitis |
Sibling taxa | ||
Synonyms | V. cordifolia, V. cordifolia var. sempervirens, V. illex, V. pullaria | V. rupestris var. dissecta |
Name authority | Linnaeus: Sp. Pl. 1: 203. (1753) | Scheele: Linnaea 21: 591. (1848) |
Web links |