 The cap is initially convex when young , later becoming convex to flattened or slightly depressed in the center , reaching a diameter of 3 – 11 mm ( 0 @.@ 12 – 0 @.@ 43 in ) . The cap margin starts out rolled or curved inward , but straightens out as it matures . The cap surface ranges from dry to moist , smooth to covered with fine whitish hairs , and is mostly even with translucent radial grooves at the margin . It is subhygrophanous ( changing color somewhat depending on hydration ) , becoming a grayish @-@ orange when watery or old , and usually is white with a very faint pinkish flush when fresh . The flesh is whitish , quite thin , and has no distinctive taste or odor . The gills are adnate to slightly arcuate ( curved into the shape of a bow ) with a tooth ( meaning that the gills curve up to join the stem but then , very close to the stem , the gill edge curves down again ) . There are between 12 and 20 gills that extend completely from the cap edge to the stem , and three to five tiers of lamellulae ( shorter gills that do not extend completely from the cap edge to the stem ) . The gills are thin , narrow to moderately broad , and white to pinkish @-@ buff . The gill edges are even , and the same color as the gill faces . 
