Another great "cup" fungus, that is out this time of year is the Black Tulip or Devil's Urn, Urnula craterium. I prefer the second name, it just sounds more ominous. Below is a look down into the depths of the Devil's Urn. (I feel like I need to add a wicked laugh for the full effect.) If you blow very gently on the inside of the urn, the spores (called ascospores) will puff out, looking like smoke.
And below is a cool side view. This mushroom is saprobic, feeding on decaying wood. These were found on a stick buried under some leaves. They prefer very moist soil and cottonwood, oak or aspen wood.
And to add to the excitement of my find, one of the urns was full of tiny spiders. So fitting for a Devil's Urn! The little guys had just hatched out and can be seen in the dark area inside the cup.
If you find a Devil's Urn, Tom Volk is collecting them and would appreciate you sending him the dried specimens. More details are at his website.