Agaricus

any mushroom of the genus Agaricus, comprising the meadow mushrooms and a commercially grown species, A. brunnescens.
Historical Examples

It would not be highly esteemed where other and better species can be had, but it is generally preferred to agaricus melleus, Fr.
Fungi: Their Nature and Uses Mordecai Cubitt Cooke

The agaricus gambosus is one that a person cannot well make any mistake about.
Mushroom Culture W. Robinson

Since the plant occurs in the same situations as the agaricus campestris it might be mistaken for it, especially for white forms.
Studies of American Fungi. Mushrooms, Edible, Poisonous, etc. George Francis Atkinson

Page 304: ‘agaricus mellens’ corrected to ‘agaricus melleus’.
Wood and Forest William Noyes

This is the agaricus muscarius, or Fly Agaric, which is sometimes used as a fly poison.
Fungi: Their Nature and Uses Mordecai Cubitt Cooke

The common mushroom agaricus campestris belongs to this group.
Among the Mushrooms Ellen M. Dallas and Caroline A. Burgin

This little alga resembles a mushroom of the agaricus variety or gilled species, and so is easily identified.
The Sea-beach at Ebb-tide Augusta Foote Arnold

He carefully observed the habits of one, which lived under the covering of a mushroom, the Oak agaric (agaricus quercinus).
The Insect World Louis Figuier

It must not be confounded with a very similar species (agaricus euosmus, B.), with rosy spores, which is unpleasant.
Fungi: Their Nature and Uses Mordecai Cubitt Cooke

The fruiting surface is either in the form of gills like agaricus, or it is honey-combed, or spinous, or entirely smooth.
Studies of American Fungi. Mushrooms, Edible, Poisonous, etc. George Francis Atkinson