Pileus convex, then expanded, not becoming campanulate, obtuse, at length; depressed, almost even when young, never striate, at length more or less squamulose, mouse-colour, or sooty-grey, with a blue tinge, becoming paler but not hygrophanous, about 2.5 cm across; flesh thin; gills adnate, easily separating from the stem and appearing as if free, ventricose, white, then pale flesh-colour ; spores irregularly nodulose or angular, 10-11 x 6-7 µ; stem 2.5-3.5 cm. long, up to 4 mm. thick, entirely cartilaginous, glabrous, even, not punctate upwards, usually bluish-violet, hollow.

Dannevirke, New Zealand. Europe, Australia.

Among grass, &c.

Distinguished from several nearly allied species by the pileus not being umbilicate and not in the least striate, and the stout stem.