Panaeolus cinctulus This is a common fungus that is found throughout the world. It's cap ranges from convex and campanulate to umbonate depending on its stage of maturity. Fruiting bodies can range from 4-6cm in diameter and are typically found in grassy, well-fertilized areas. The mushroom is known to contain some psychoactive...
Cortinarius trivialis Fruiting bodies are seen in late summer, fall and even winter in warmer climates in North America. This mushroom may be toxic, however it also contains a slimy veil which makes it quite unappealing. It forms a mycorrhizal relationship with some aspen species.
Suillus lakei This species is native to North America and is often characterized by its scruffy cap and partial veil, among other attributes. S. lakei forms ecotomycorrhizal relationships with douglas fir and it's fruiting bodies can be seen in late summer and autumn.