Chlorophyllum molybdites

Chlorophyllum molybdites: The toxin creates severe gastrointestinal upset over several hours. The green spore print and growth in a fairy ring clearly separates this species from the look alike edible species of Macrolepiota which have a white spore print. It forms fairy rings in lawns, meadows, and grassy areas and is one of the most frequently mistaken for an edible mushroom.