• Proposed
  • 2Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Acaulospora spinosa C. Walker & Trappe

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Scientific name
Acaulospora spinosa
C. Walker & Trappe
Common names
IUCN Specialist Group
Assessment status
Proposed by
Lilian Araujo Rodrigues
Comments etc.
Lilian Araujo Rodrigues

Assessment Notes

Taxonomic notes

Acaulospora spinosa resembles A. elegans but differs in lacking a complete reticulum supermposed on the spines at maturity and having only two thin inner walls (Walker; Trappe, 1981)

Why suggested for a Global Red List Assessment?

We suggest this species to be categorized as Least Concern (LC) due to the several records worldwide.

Geographic range

The species is known in 11 countries.

Population and Trends

A very common species in several countries. It has 100 data according to GBIF when searching Acaulospora spinosa.

Population Trend: Uncertain

Habitat and Ecology

In Brazil, the species is found in Caatinga, Amazon, Atlantic Forest and Cerrado.

Temperate ForestSubtropical/Tropical Dry ForestSubtropical/Tropical Moist Lowland ForestSubtropical/Tropical Mangrove Forest Vegetation Above High Tide Level


In Brazil, Acaulospora spinosa can be found in Tropical rainforest and Tropical Dry Forest. However, these forests currently have higher rates of deforestation.

Tourism & recreation areasShifting agricultureAgro-industry grazing, ranching or farmingUnintentional effects (species being assessed is not the target)Intentional use: large scale (species being assessed is the target) [harvest]

Conservation Actions

Some records in Brazil are in unprotected areas. The isolation of this fungus in controlled condition represents an advance for the conservation of this species.

Site/area protectionResource & habitat protectionAwareness & communications

Research needed

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

TaxonomyPopulation size, distribution & trendsLife history & ecology

Use and Trade




Marinho, F., da Silva, I. R., Oehl, F., & Maia, L. C. 2018. Checklist of arbuscular mycorrhizal fungi in tropical forests. Sydowia, 70, 107-127.
Wang, F. Y., & Shi, Z. Y. 2008. Biodiversity of arbuscular mycorrhizal fungi in China: a review. Advances in Environmental Biology, 2(1), 31-39.
Walker, C., & JM, T. 1981. Acaulospora spinosa sp. nov. with a key to the species of Acaulospora. 12(2), 515-521.

Country occurrence

Regional Population and Trends

Country Trend Redlisted