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Earth stars (Geastrum) | by Bernard Spragg
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Earth stars (Geastrum)

Astraeus hygrometricus, commonly known as the hygroscopic earthstar, the barometer earthstar, or the false earthstar, is a species of fungus in the Diplocystaceae family. Young specimens resemble a puffball when young and unopened. In maturity, the mushroom displays the characteristic earthstar shape that is a ... The resemblance to Geastrum species (also known as true earthstars)

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Taken on June 15, 2013