Agaricus globocystidiatus is a conspicuous saprotrophic mushroom that grows on soil, usually gregarious. The species has been found in southern and southeastern Brazil, Paraguay and Uruguay, and it has also an occurrence in Mexico, presenting a large potential suitable range. As A. globocystidiatus was found growing on a football field in Mexico and in urbanized areas in Brazil, it is suspected that the species can occupy highly disturbed areas caused by anthropogenic activities, and thus there are no major threats to its population. The species has also been found in Paraguay and Uruguay, although these observations have not been published. Based on the species’ suitable range and its capacity to thrive in urban areas, its population is considered stable or potentially increasing. Therefore, A. globocystidiatus is assessed as Least Concern (LC).

Agaricus globocystidiatus Drewinski & M.A. Neves, in Drewinski, Menolli & Neves, Phytotaxa 314(1): 68 (2017)

Agaricus globocystidiatus is a saprotrophic mushroom that grows on soil, usually gregarious. The species was recently described based on specimens collected in Santa Catarina and Paraná States, in Brazil. The species is currently known for Brazil and Mexico. In Brazil, A. globocystiatus was reported to Santa Catarina, Paraná (Drewinski et al. 2017), and São Paulo states (Ramos 2018). In Mexico, the species was reported to Coatepec, located in the mountains of Veracruz State (Chen et al. 2019). The species has also been found in Paraguay and Uruguay, although these observations have not been published. The species is known for Brazil, Mexico, Paraguay, and Uruguay. Most specimens were found growing in urban areas.

The species is currently known for Brazil, Paraguay, Uruguay and Mexico. In Brazil, most collections were made in Florianopolis island, Santa Catarina State, at the campus of the Universidade Federal de Santa Catarina in different dates (2015-2017); at the Parque Ecológico do Córrego Grande; and in a site in the Cacupé district. In the state of Paraná, the species was found in the Parque Municipal das Araucárias, a fragment of the Mixed Ombrophilous Forest (Drewinski et al. 2017). In the state of São Paulo, the species was reported in two sites in São Paulo city: at the Universidade de São Paulo and at the Parque Estadual das Fontes do Ipiranga (Ramos 2018). In Mexico, the species was reported to Coatepec (Chen et al. 2019),  located in the mountains of Veracruz State, growing on a football field at the Unidad Deportiva Roberto Amorós Guiot. It is likely distributed along the neotropical region.

At the moment there are 13 collections of the species, most of them (nine) are from Florianopolis, Santa Catarina state; one collection is from Parque Municipal das Araucárias, Paraná state, and two collections are from São Paulo city, São Paulo state. In Mexico, the species was reported for only one site, occurring in a football field. Also, the areas in which the species was collected in Florianopolis are highly urbanized and/or surrounded by dense human occupation, representing small fragments of forests within urban perimeters. It is expected that the species occurs throughout the Neotropical region maintaining its trend to occur in urban areas, and therefore potentially increasing its population size as more pristine areas are faced with disturbances. This is a species with medium to high detectability due to its size and gregarious growth. As most of the specimens were found in association with anthropogenic areas, there is no indication of population decline or a major threat to the species. The number of sites in which A. globocystidiatus occurs is difficult to calculate because of the large range area from Southern Brazil to Mexico that includes many urban areas.

Agaricus globocystiatus is a saprotrophic species that grows on soil, solitary to gregarious. In Brazil, the species was found growing mostly in urban areas, but also in Dense and Mixed Ombrophilous Forest (Drewinski et al. 2017). In Mexico, the species was collected in a football field, growing in a fairy ring of approximately four meters in diameter (Chen et al. 2019).

Due to the occurrence of the species in urban areas, it is suspected that there are no major threats to this species and its population size is stable.

The species most likely does not require conservation actions because it grows in urban areas that are increasing within the species’ known area of occurrence.

The species distribution is still poorly known. New collections are needed to confirm the wide distribution of the species throughout the Neotropics. It is important to further investigate if the species occurrence is positively correlated to human disturbances on protect areas.

The species is edible and consumed in Uruguay.