Inocybe praetervisa
... that the gills of Inocybe praetervisa change from whitish to clay brown as the mushrooms mature?
... that the <a href="./Lamella_(mycology)" id="mwCgk" rel="mw:WikiLink" title="Lamella (mycology)">gills</a> of <i id="mwCgo"><b id="mwCgs"><a href="./Inocybe_praetervisa" id="mwCgw" rel="mw:WikiLink" title="Inocybe praetervisa">Inocybe praetervisa</a></b></i> <i id="mwCg0">(pictured)</i> change from whitish to clay brown as the mushrooms mature?