Depending on your soil moisture, I would recommend the following plants.
Actaea pachypoda (Doll's Eyes)
Anemone quinquefolia (Wood Anemone)
Aquilegia canadensis (Columbine)
Arisaema triphyllum (Jack-in-the-Pulpit)
Asarum canadense (Wild Ginger)
Campanula americana (Tall Bellflower)
Chasmanthium latifolium (River Oats)
Cimicifuga racemosa (Black Cohosh)
Eupatorium coelestinum (Mistflower)
Iris cristata (Dwarf Crested Iris)
Mertensia virginica (Virginia Bluebells)
Phlox divaricata (Wild Blue Phlox)
Podophyllum peltatum (May Apple)
Polygonatum biflorum (Solomon's Seal)
Sanguinaria canadensis (Bloodroot)
Smilacina racemosa (Solomon's Plume)
Solidago flexicaulis (Zig Zag Goldenrod)
Trillium sp.
Uvularia grandiflora (Bellwort)
