16c. Vitis cinerea (Engelmann) Millardet var. floridana Munson, Rev. Vitic. 6: 424. 1896.
Simpson's grape Simpson's grape
Vitis aestivalis Michaux subsp. divergens W. M. Rogers; V. aestivalis subsp. sola (L. H. Bailey) W. M. Rogers; V. austrina Small; V. simpsonii Munson; V. sola L. H. Bailey
Branchlets slightly angled, sparsely to densely arachnoid, not evidently hirtellous; nodes usually not red-banded, sometimes so. Leaf blade apex acuminate, abaxial surface sparsely to densely arachnoid, usually not, sometimes very sparsely, hirtellous. Berries slightly glaucous.
Flowering late May–Jun; fruiting Jul–Oct. Floodplains, lowland woods, stream banks, marsh and pond margins; 0–100 m; Ala., Fla., Ga., La., Md., Miss., N.C., S.C., Va.
Variety floridana is found on the coastal plain and intergrades with var. baileyana along the fall line at the edge of the Piedmont. Some workers recognized it at the species rank as Vitis simpsonii (for example, L. H. Bailey 1934; D. B. Ward 2006b), despite the confusion on the name by Munson; see discussions in B. L. Comeaux and P. R. Fantz (1987). It is sometimes confused with V. aestivalis; see discussion under that species.