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. Spore print olive-brown.
Microscopic Features: The spores measure 2.5-4 µm and have a subglobose to globose shape, with or without a short pedicel. They have a smooth surface and thick walls. In KOH (potassium hydroxide), they appear hyaline (colorless) to yellowish.
Synonyms: A common synonym is Langermannia gigantea.
Calvatia gigantea on the www.first-nature.com web site.
Calvatia gigantea on the MushroomExpert.Com Web site.
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