High-bush Cranberry, Moosewood Viburnum, Squashberry: Viburnum edule (Synonyms: Viburnum opulus var. edule, Viburnum pauciflorum) - Shrub to 9 feet tall. Leaves oval, opposite, and toothed at the tip. Flowers small, arranged in fist-sized, saucer-shaped clumps. Flowers have a bad odor!
Oval-leaved Viburnum, Western Blackhaw: Viburnum ellipticum (Synonym: Viburnum ellipticum var. macrocarpum)