Riverbank Grape (Vitis riparia) 2015-8-31 Newark, DE - leaves extremely variable

-growing at the edge of a ditch without much support other than tall grass and a smallish Blackberry bramble
-yes, leaf paler green underneath and hairs on veins
https://www.uwgb.edu/biodiversity/herbarium/shrubs/vitrip01.htm

http://www.illinoiswildflowers.info/trees/plants/riverbank_grape.htm
Grape family (Vitaceae)
-leaf is pale green beneath with hairs on the veins only - Fox Grape's leaves are fuzzy with brown-gray hairs on the underside.