Leucocoprinus flos-sulphuris

About

Leucocoprinus birnbaumii, commonly known as the flower pot parasol, yellow parasol, flowerpot parasol, or plantpot dapperling, is a species of gilled mushroom in the family Agaricaceae. It is common in the tropics and subtropics. In temperate regions, it frequently occurs in greenhouses, flowerpots, and indoor terrariums. It is toxic if ingested.

Summary from Wikipedia