These are in central Vermont between a yew and rhododendron. The garden was mulched once upon a time but not recently. The mushrooms came up in mid to late October. As you can see (I hope) from the pictures, the cap is umbonate, striate, hygrophanous, the gills are adnexed and dark brown, the stem fibrous and slender and curvy, mycelium sticks strongly to base, the spore print is dark brown/purple and the mushrooms bruise blue if you look at them wrong.
What do you think they are? I think they are edible because of the bruising and the spore print. If I am lucky they are also active.