Collection location: Los Trancos Preserve, Palo Alto, Santa Clara Co., California, USA [Click for map]
First time I saw this up there, although it might be more common, just hard to find because it is soo small. The cap is probably less than 3mm in diameter. But still there were gills and everything under the cap.
I brough it home to try and get a better photo with more detail. But it had completely dried up into a tiny orange-red thread by the time I got home. So, this photo is all I got here.