Sculpted Puffball, Sculptured Puffball, Pyramid Puffball, Sierran Puffball
Calvatia sculpta
Synonym: Lycoperdon sculptum

This sculptured puffball measures about 18 cm in diameter.
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Examples of sculptured puffball seen in open Oregon oak forest high above the Klickitat River in the Klickitat State Wildlife Area........June 28, 2009.
Paul Slichter