Agrocybe pediades is a typically lawn

Lawn

A lawn is an area of aesthetic and recreational land planted with grasses or other durable plants, which usually are maintained at a low and consistent height. Low ornamental meadows in natural landscaping styles are a contemporary option of a lawn...

 and other types of grassland mushroom

Mushroom

A mushroom is the fleshy, spore-bearing fruiting body of a fungus, typically produced above ground on soil or on its food source. The standard for the name "mushroom" is the cultivated white button mushroom, Agaricus bisporus; hence the word "mushroom" is most often applied to those fungi that...

, but can also grow on mulch containing horse manure. It was first described as Agaricus pediades by Swedish mycologist Elias Magnus Fries

Elias Magnus Fries

-External links:*, Authors of fungal names, Mushroom, the Journal of Wild Mushrooming.*...

 in 1821, and moved to its current genus Agrocybe

Agrocybe

Agrocybe, including edible fungi such as the Agrocybe cylindracea, is a genus of mushroom with similar characteristics to the Tricholoma matsutake, Agrocybe aegerita and Agrocybe parasitica. Some are poisonous mushrooms...

by Victor Fayod

Victor Fayod

Victor Fayod was a Swiss mycologist. He is credited with the first description of the mushroom Cystoderma amianthinum. He studied in Lausanne and Zurich. Fayod first worked with Heinrich Anton de Bary in Strasbourg from 1881 to 1882, then as a tutor. He also assisted French bacteriologist André...

 in 1889. A synonym

Synonym (taxonomy)

In scientific nomenclature, a synonym is a scientific name that is or was used for a taxon of organisms that also goes by a different scientific name. For example, Linnaeus was the first to give a scientific name to the Norway spruce, which he called Pinus abies...

for this mushroom is Agrocybe semiorbicularis.

Some experts divide Agrocybe pediades into several species, mainly by habitat and microscopic features, such as spore size. It is recognized by the large, slightly compressed basidiospores with large central germ-spore, 4-spored basidia, subcapitate cheilocystidia and reare development of pleuro cystidia.