Mushroom

you are half right. all psathyrellas has dark (brown/black) spores. some psathyrella also have somewhat darker gills. But many have first (juvenile) : whitish/flesh-colored/beige /cream/light-grey and later (matured): cocoa/chocola/puple-brown to somewhat lilac shiny,!!! ( page 2 ---> http://www.google.nl/search?um=1&hl=nl&safe=off&biw=1105&bih=665&tbm=isch&oq=psathyrella+artemisiae+&aq=f&aqi=&gs_upl=21454l21454l0l21784l1l1l0l0l0l0l273l273l2-1l1l0&q=psathyrella%20artemisiae ) (page 1/5/6 -->http://www.google.nl/search?um=1&hl=nl&safe=off&biw=1105&bih=665&tbm=isch&btnG=Zoeken&oq=Kruchaweczka+zaro%C5%9Blowa+Psathyrella+&aq=f&aqi=&gs_upl=30312l30312l0l31898l1l1l0l0l0l0l201l201l2-1l1l0&q=Kruchaweczka%20zaro%C5%9Blowa%20Psathyrella) maybe you have a juvenile (whitish/cream) and maybe it's not him. :) but i tend to say it is one.

you welcome, even some people say/write it , i definitly no expert. maybe specialist or better VERY interested mushroom-fan. but thanks and remind, also i make mistakes :)

search for an american species of the genus Prsathyrella . ( maybe even this one P. artemisiae ( http://www.google.nl/search?um=1&hl=nl&safe=off&biw=1106&bih=665&tbm=isch&sa=1&q=psathyrella+artemisiae&oq=psathyrella+artemisiae&aq=f&aqi=&aql=1&gs_sm=e&gs_upl=12381l24752l0l25637l13l13l1l11l12l0l178l178l0.1l1l0 ) good luck