Calvatia pyriformis (Lév.) Kreisel, 1992 (syn: Hippoperdon pyriforme Lév., 1846);
Pestle Puffball Mushroom;

 

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attached a pic of mushroom for id (seen at CEC, Goregaon, Mumbai in the last week of June 2010.)

The mushroom in the attached photo is commonly known as “Pestle Puffball Mushroom“,  scientifically Calvatia pyriformis (Lev.) Kreisel

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