Wikipedia:Today's featured article/requests/Calvatia sculpta

Calvatia sculpta, commonly known as the sculpted puffball, is a species of puffball fungus in the Agaricaceae family. Attaining dimensions of up to 8 to 15 cm (3.1 to 5.9 in) tall by 8 to 10 cm (3.1 to 3.9 in) wide, the pear- or egg-shaped puffball is readily recognizable because of the large pyramidal or polygonal warts covering its surface. It is edible when young, before the spores inside the fruit body disintegrate into a brownish powder. Originally described from the Sierra Nevada, C. sculpta is found in mountainous areas in western North America, and was found in a Brazilian dune in 2008. It may be easily confused with Calbovista subsculpta, a similar puffball that—in addition to differences observable only with microscopy—is larger, and has slightly raised warts with a felt-like texture. Other similar species include Calvatia arctica and immature specimens of Amanita magniverrucata. (Full article...)