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Geastrum fimbriatum        Fringed Earthstar

In this Geastrum the spore sac is nested in the reflexed arms of the outer wall (peridium).  The mouth (= ostiole) of the spore sac is delicately fringed unlike the Nested Earthstar (Geastrum saccatum - click here) where the limits of the mouth area (= peristome) are clearly defined