geastrum : Idioms & Phrases
geastrum coronatum
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noun an earthstar with a bluish spore sac and a purplish brown gleba; at maturity the outer layer splits into rays that bend backward and elevate the spore sac
WordNet
genus geastrum
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noun type genus of Geastraceae; fungi whose outer peridium when dry splits into starlike segments
Geastrum.
