Ice man fungus (see Polypore, tinder)
Indian Bean (see Catalpa, Northern)
Indian cucumber root Medeola virginiana Lily
Indian Physic (see Bowman's Root/ Indian Physic)
Indian Pipe Monotropa uniflora Wintergreen
Indian Poke (see Hellbore, False/ Corn Lily/ Indian Poke)
Indian Tobacco Lobelia inflata Lobelia
Indian Toby Tree (see Catalpa, Northern)
Indian Turnip (see Jack-In-The-Pulpit/ Indian-Turnip)
Inky cap, common Coprinopsis atramentaria Gilled Mushrooms
Innocence (see Blue-eyed Mary)
Inonotus Inonotus glomeratus Mushrooms With Pores (Polypores)
Iris, Common Wild/ Blue Flag Iris versicolor Iris
Iris, Yellow Iris pseudacorus Iris
Ironweed, New York Vernonia noveboracensis E Miscellaneous
Ironweed, Yellow (see Wingstem/ Yellow Ironweed)
Ironwood (see Hop-Hornbeam)
Ivy, Ground (see Gill-Over-The-Ground / Ground-Ivy)
Sisyrinchum angustifolium
Sisyrinchium montanum
Iris versicolor
Iris pseudacorus