1 Trillium flexipes, drooping trillium
2 Morchella species. James, thanks for your extensive internet research on Morchella. It looks like the taxonomy of American morels is somewhat messy, and most are given the names of European species, but have been found to be distinct from the old world Morchella.
3 Viola sororia
4 Claytonia virginica
5 The half-free morel, another Morchella species.
6 A blister beetle, or more specificially, an oil beetle, in the genus Meloe. After learning about this creature's secretions give nasty blisters, I'm glad I didn't touch it.
7 Hydrastis canadensis, goldenseal
8 Trillium grandiflorum
9 A four-merous Trillium sessile. I've heard that these can come in sexilliums and octallions as well (that would be six and eight parts, and I just made those words up:)
10 This is just a shot of a headwater stream. Not sure why I threw this one in. Maybe just for variety. There is a tiny shrub pictured, I don't remember what it was.
11 Aesculus glabra, Ohio buckeye, the state tree of our great Buckeye State.
12 This is the skull of a white tailed deer, Odocoileus virginianus. David was pointing out how sharp this individuals teeth were, meaning that it was a young individual. Only the front teeth were worn down significantly.
13 Eastern milk snake, Lampropeltis triangulum. Our milk snakes tend to be chocolate brown and gray rather than red and gray.
14 I believe this is the shed exoskeleton or even the carcass of a dead burrowing crayfish. Ohio has several species, and my crayfish book is at work! Roger Thoma, a crayfish expert in Ohio, could tell us what this is, I'm sure.
15 Northern dusky salamander, Desmognathus fuscus
16 A land snail. I haven't learned snails yet. Any mollusc experts out there?
17 Carex bromoides Ryan gets kudos for spotting this one as a Carex.
18 Carex communis
19 Carex pensylvanica
20 Symplocarpus foedtidus, skunk cabbage. Props go to Adam Paul for this one.
21 Chrsyosplenium americanum, golden saxifrage. Prize goes to Jennifer @ A Passion for Nature.
22...And as Kathleen said, Cornus florida. One of my favorite trees of northeast Ohio. Here in central Ohio, I'm partial to the redbud at this time of the year.