puffball

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Lycoperdon

(lī'kō-per'don),
A genus of fungi (family Lycoperdaceae), some species of which have been used medicinally, for example, in alternative medicine, by nasal inhalation to treat epistaxis. The spores of Lycoperdon bovista (Lycoperdon gemmatum, Lycoperdon caelatum) and of Lycoperdon pyriforme may rarely produce lycoperdonosis.
Synonym(s): puffball
[G. lykos, wolf, + perdomai, to break wind]

puffball

(pŭf′bôl′)
n.
1. Any of various fungi chiefly of the family Lycoperdaceae, having a ball-shaped fruiting body that when pressed or struck releases clouds of small spores.
2. Informal The rounded head of a dandelion that has gone to seed.