I'm guessing this might be P. badius since the stalk seems entirely dark, but I don't know for sure. Anyone have any tips? I foolishly neglected to take a pic of the top of the cap, but you can see a bit of the marginal coloration in the upper left of this image.

SUPER viscid cap AND stem. Very weird mushroom. Seemed to be growing in soil, but there were tanoak, redwood, Doug fir, and pine around. Seems to lack the belts on the stem of C. collinitus, though who knows, it might be a similar cort.