Inocybe 'serrata complex'

The arrow in Photo 1 points to where I inadvertently handled the stem and destroyed its white coating. The upper images in Photo 2 show young caps in various stages of expansion. At the lower left you see a partly chewed, fully-open cap and at the lower right some serrate gill edges. The central image in Photo 3 shows most of a stem in vertical cross-section. You can see the white coating side on, as somewhat bristle-like growths. The image on the left shows a close view of the 'bristles' from the upper part of the stem. There are numerous organs (technically cystidia) that protrude from the stem. The cystidia have fat bases but taper outwards. The lower part of the stem lacks cystidia but numerous colourless filaments (or hyphae) grow out from the stem. They are contorted and entangled. Finger pressure causes those 'bristles' to collapse and the underlying brown colour then shows through. Cystidia are also found on the gills, on both the gill edges and the gill faces. The large image in Photo 4 shows a close view of a slightly mangled cross section of part of a gill. At the upper left cystidia are protruding from the gill edge.