Some will show the green gametophytes only, but some will have last year's and this year's sporophytes attached. Polytrichum lives in drier upland sites. Other species, such as Mnium are more likely found on wet sites. Liverwort colonies occur on the banks of the creek, but are relatively rare. I have collected Conocephalum and Pallavicinnia there.
Sphagnum moss is found in very wet soils in the floodplain.
If you find a good hummock, try squeezing a small portion of the gametophytes to see what happens. D. Ferns and Allies. At this time of year, deciduous ferns are rapidly developing from perennial rhizomes. Fiddleheads should be easy to find, but the species of fern they represent is impossible to tell for most taxa. When fronds become reproductive it may be easier to determine which is which.