Acaulospora aspera differs from A. spinosissima by small, irregular washboard-like depressions of OWL2 instead of small spines on the outer spore surface, and from A. herrerae by smaller depressions, which do not form a reticulum on the outer wall layer surface, giving A. aspera an asper, washboard-like appearance (Corazon-Guivin et al., 2019).

Because it is a recently described species, we suggest this species to be categorized as insufficient data (DD).

The species is known in two countries.

This species was isolated from the rhizosphere of the inka nut (Plukenetia volubilis) in San Martín State of Peru (Western Amazonia) and found in an Atlantic Forest regeneration area in southern Bahia.

In Brazil, the species is found in Atlantic Forest.

In Brazil, Acaulospora aspera is found in Brazilian Atlantic Forest,  forest currently have higher rates of deforestation and which is considered a hotspot, there is also the fact that this taxon has not been well studied yet.

In Brazil, records for this species are in protected areas, however the isolation of this fungus in controlled condition represents an advance for the conservation of this species

Other areas should be studied in order to assess the distribution of this species.

None.

Corazon-Guivin, MA, Cerna-Mendoza, A, Guerrero-Abad, JC, Vallejos-Tapullima, A, da Silva, GA, Oehl, F (2019). Acaulospora aspera, a new fungal species in the Glomeromycetes from rhizosphere soils of the inka nut (Plukenetia volubilis L.) in Peru. Journal of Applied Botany and Food Quality 92, 250-257.
Rodrigues, LA, da Silva, DKA, Yano-Melo, AM (2021). Arbuscular Mycorrhizal Fungal Assemblages in Conservation Unit of Atlantic Forest Areas Under Native Vegetation and Natural Regeneration. Microbial Ecology. https://doi.org/10.1007/s00248-020-01653-z