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Scleroderma bovista

Common Name: Potato Earthball

Synonyms: 

Substrate: Ground

Spore Color: Black to Purplish Black

Comments: 

These mycorrhizal mushrooms grow from the ground, and does not have the leopard skin pattern that is common with several of the other common earthballs. A drop of KOH on the surface should yeild a red reaction. It gets the common name from the smooth surface. The top of the surface may split with age.

Poisonous. Do not eat.

Lookalikes:  

Scleroderma areolatum has a pale yellow-brown surface with scales. Scleroderma citrinum also has a scaly, rather than smooth surface.

Pictures:

Scleroderma bovista

9/29/12 - Ross Hills Park - West Lafayette, IN