I think A. moronii on this one as well
I'm thinking A. moronii because of the short stature. Collected by Jennifer Bell.
Grey stipe context
Under Lodgepole Pine
I believe it could be RWK2283/PNW10 due to size and unique flying saucer bulbous base shape. Under mostly Lodgepole with a Spruce nearby.
Under Engelman Spruce
Last pics with 365nm UV
Smelled Mushroomy. Under Spruce and Aspen. Some yellowing. Smaller annulus than arvenses types. Irregular bell shaped cap with slightly greyish-red tones.
Agaricus cf. chionodermus
Spores 8-10 x 6
Under Spruce. Almond smell. Bulbous stipe base. Readily yellowing. Very fresh. didymus or gemellatus suspect.
Spores 8-9 x 6
Almond smelling. Bulbous stipe base. Yellow staining. The small one was completely upside down under the duff. Agaricus didymus or gemellatus likely.
Under Gamble Oak
Spores double-walled, ellipsoid, dextrinoid with a spiny ornamentation.
Size 9-10 x 6µm
Suburban Lawn
Early Woodland Agaricus section arvenses. No bulb on the base of the stipe. Almond smell.
Spores 8-9 x 5-6μm