agari- +

1. One of numerable fungi mainly of the order Agaricales: An agaric is a fungus with a large cap resembling an umbrella with numerous radiating gills on the underside. Some types are edible and some are poisonous, like the fly agaric.

The fungi of the family Agaricaceae include the mushrooms.
2. The dried spore-producing elements of specific fungi: The agaric of the Polyphorus officinalis used to be employed in medicine.

A white, tasteless, odorless powder extracted from the fungus Polyporus officinalis: Agaric acid has been used to treat diarrhea, reduce bronchial secretions, and reduce night sweats.

A family of mushrooms: Agaricace species include the typically umbrella-shaped fungi in which the cap breaks cleanly from the stalk, which usually bears a ring.

Two mushrooms of the family Agaricaceae are the field mushroom, Agaricus campestris and the cultivated mushroom, Agaricus bisporus.

An order of basidiomycetous fungi: The Agaricales include the umbrella like fungi with gills or pores on the under surface of the cap.

In chemistry, an agaric acid: Agaricin, an impure acid, is utilized as a substance in medicine for preventing the immoderate amount of perspiration or sweating.

Referring to the fruiting body of a mushroom or a toadstool of the order Agaricales: The agaricoid fruit-bearing surface, the hymenium, is a layer or fungal tissue containing the spores that forms a layer on the gills.

To live on mushrooms and toadstools: Deer, squirrels, birds, and turtles agaricole especially in winter when food requirements become critical.

A reference to species living on mushrooms and toadstools: The agaricolous red squirrel eats both mushrooms and toadstools, like the fly agaric, which are very toxic to mankind.

A genus of the order Agaricales: Agaricus includes lichen genera and 300 species of mushrooms, which can be both edible and poisonous.