Leucoagaricus sp.

The fruit body is fleshy and consists of a cap atop a stem, with gills on the underside of the cap. The cap may be white or coloured and smooth, fibrillose or scaly. In some species the cap is only 2 or 3 centimetres in diameter but in others may be reach 10 or more. The gills are white and none of the gills are in contact with the stem. Technically it is described as having free gills.   

A partial veil covers the gills before the cap has expanded and it remains as a ring of tissue around the stem once the cap has opened out. There is no universal veil.

Spore print: white.

The fruit bodies of this genus appear on soil.

Look-alikes

Species of this genus are most likely to be mistaken for Amanita or (and more likely) with genera in what could be called the Lepiota/Macrolepiota group. There are some macroscopic and microscopic similarities with others in that group and a definite identification of a mushroom as Leucoagaricus requires a look at some microscopic features.