earthball : Idioms & Phrases
smooth earthball
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noun an earthball with a peridium that is firm dry and smooth when young but developing cracks when mature; pale orange-yellow when young and reddish brown at maturity
Scleroderma bovista.
WordNet
star earthball
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noun an earthball with a smooth upper surface that is at first buried in sand; the top of the fruiting body opens up to form segments like the ray of an umbel
Scleroderma flavidium.