Chrysomphalina grossula

CAP 2-35 (-60) mm broad, convex to plano-convex with incurved margin when young, becoming convexo-umbilicate to uplifted with age, moist, hygrophanous, striate, smooth, initially yellow to brown or green-yellow, becoming pale green-yellow with age or even off-white, color of margin yellow to green-yellow; with age the entire cap almost white. GILLS strongly decurrent, initially ending at the same point on the stem apex, arcuate, thickened in age and often intervenous, edges even, yellow to green-yellow becoming slightly paler to off-white on exposure or with age. STEM central, 5-40 (-55) mm long, more or less equal 1.5-7 mm at apex, usually hollow in mature specimens, more or less smooth but may appear minutely pubescent, yellow or green-yellow.