Pluteus romellii
The yellow stem of this mushroom is a distinctive characteristic.
Pluteus romellii grows on wood and produces a pink spore print.  
Pluteus lutescens is a synonym.
pluteus romellii
pluteus romellii
pileipellis cells of pluteus romellii
The brown cells in this micrograph appear on the
cap surface (pileipellis) of
pluteus romellii.
Spherical and sometimes pendulum shaped, they
are described technically as sphaeropedunculate.
Note small, round spores (5-6 microns wide).
See pluteus romellii  at
pluteus romellii
pluteus romellii