A tiny pale yellow, extremely fragile, pleated cap with a central bump and white to pale yellow gills. The stem is long and very thin, with a flimsy yellow ring. Found in mixed native forests.

Cap: 5-25 mm, rarely to 30 mm across. Very thin, membranous, collapsing at the slightest touch. Colour pale sulphur-yellow to whitish-yellow; centre often slightly deeper yellow. Shape initially campanulate to conical, soon expanding to a shallow parabola with a small central umbo. Surface strongly striate-plicate almost to the centre due to the extreme thinness of the flesh. Margin often splitting radially as it ages or dries.
Gills: Free, crowded, very thin. Colour white to pale cream, sometimes faintly yellowish. Edges smooth; lamellulae present.
Stem: 30-80 mm x 1-2 mm, hollow, extremely fragile. Colour pale yellowish to whitish. Surface smooth or very finely pruinose. Ring absent or represented only by a fleeting, evanescent zone.
Flesh: Almost nonexistent, paper-thin, watery, collapsing when handled. Colour whitish to pale yellow. No distinctive odour.