on this afternoon's walk

Goldenrod, probably Rough-stemmed, Solidago rugosa.

Wild grapevine. I am not certain of the variety, as apparently there are at least 5. Here's a fun recipe for making wine from wild grapes.
Virginia creeper, Parthenocissus quinquefolia, (above), on the fence, is occasionally mistaken for poison ivy, Rhus radicans (below, growing on the ground under the small trees and shrubs). Poison Ivy has only three leaves, and its leaves have no teeth. Virginia Creeper always has teeth on its leaves and the leaf consists of five leaflets.