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Calvatia cyathiformis
Large puffball mushroom. Surface is cracked dark brown/maroon and cream with a mosaic-like pattern. Shape is spherical (on top) to tapered (on bottom). The interior gleba (spore mass) is pure white. Calvatia cyathiformis is a saprobic, terrestrial puffball. It is easily identified by its mature spore mass, which changes from white to purple before dispersal. It is considered a choice edible when the interior is still white.
This was a large specimen found growing in grass in a fielded area in a public park.
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