Paxillus is a genus of mushrooms of which most are known to be poisonous or inedible. Species include Paxillus involutus and Paxillus vernalis. Two former species—Tapinella panuoides and Tapinella atrotomentosa—have now been transferred to the related genus Tapinella in the family Tapinellaceae

Paxillus means small stake.

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