Bisporella citrina - Mushroom-shaped, sometimes with irregular edges, flat or disc-shaped. With or without a very short stem. Reaching a diameter of 1 to 3 mm and a thickness less than 1 mm. Lemon color, bright yellow, darkening with rusty spots in old age. Smooth hymenium surface.

The stem is short or absent.

Lemon flesh, unchanging after compression, watery-waxy. No perceptible smell and taste.

Occurrence: On bare damp wood of deciduous trees, also on the surface of cut stumps. Often on beech, oak, hazel and alder. Clusters, often merging with each other and forming large grasslands. From autumn to early spring. Common.

Value: Inedible mushroom.