Hare's Foot Inky Cap - Coprinopsis lagopus
Pale Brittlestem - Psathyrella candolleana
Clusters of small mushrooms growing from the ground, often near a dead tree. These were next to a stump (Elm I think). They made a very dark brown spore print.
Gills start out white, then light grayish purple, finally turning dark brown.
Tattered veil remnants along the margin of the cap are common in Brittlestems.
Descriptions of P. candolleana don't mention fibers along the stem, so maybe these are some other species of similar Brittlestem.
Cross-veined Mushroom - Xeromphalina tenuipes
Many of these mushrooms have a greenish spot in the middle of the cap, which seems like it would be a distinctive feature, but I had no luck with identification. They grew in small clusters in the woods, next to a very rotten log. Gills were white. Stem whitish and very long, with a slight covering of fuzz. No distinctive odor or taste. A white spore print and the fact that dry mushrooms revived in water makes Marasmius a likely genus.