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Calvatia gigantea   (Giant puffball)
North America, Asia and Europe
7-80 cm diameter * 7-80 cm tall

Calvatia gigantea, commonly known as the giant puffball, is a puffball mushroom commonly found in meadows, fields, and deciduous forests usually in late summer and autumn. The large white mushrooms are edible when young.

Fruiting body shaped like a ball, or nearly so, white when fresh, becoming yellowish or olive brownish. The surface is less than 1 mm thick. soft, finely velvety when young, becoming bald. The inside of mature Giant puffballs is greenish-brown, whereas the interior of immature puffballs is white.

Similar species Bovista plumbea, which is a lot smaller.

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