Genus
Sphaerobolus (Cannonball fungi)
Sphaerobolus stellatus. Photo: (c) Bobby Valentine, some rights reserved (CC BY-NC)
Sphaerobolus is a genus of fungi in the family Geastraceae. Commonly known as the “shotgun fungus” or “cannonball fungus”, species discharge their spores with explosive force. Discharged spore sacs are sticky and have a tendency to strongly adhere to whatever surface they encounter, making them a nuisance to homeowners, pressure washing contractors, landscape mulch producers and insurance companies.
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