Similar species:
Riverbank Grape (Vitis riparia) - Leaves similar. Seeds are not crescent-shaped and are edible. Vines have tendrils. One-seeded Bur Cucumber (Sicyos angulatus)
Canada Moonseed trailing up a tree, very similar to grape vines.
This is one of the distinctive features of Canada Moonseed leaves - the leaf stem (petiole) attaches to the leaf just in from the leaf edge. This helps to distinguish Canada Moonseed from Grapes.
Unripe fruit in late August (sorry, the photo is slightly out of focus!).
PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State.
The entire Province/State is coloured, regardless of where in that Province/State it occurs.
(Range map provided courtesy of the USDA website
and is displayed here in accordance with their
Policies)