genus Lepiota ge·nus·le·piota uncommon noun 1. agarics with white spores that includes several edible and poisonous mushrooms: parasol mushrooms Synonymsgenus Lepiota Related words Broader terms fungus genus Parts Lepiotaceae Part of lepiotaparasol mushroompoisonous parasolLepiota naucinaLepiota rhacodesAmerican parasolLepiota rubrotinctaLepiota clypeolaria WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.