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

Scutellospora calospora (T.H. Nicolson & Gerd.) C. Walker & F.E. Sanders

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Scientific name
Scutellospora calospora
(T.H. Nicolson & Gerd.) C. Walker & F.E. Sanders
Common names
IUCN Specialist Group
Assessment status
Proposed by
Lilian Araujo Rodrigues
Comments etc.
Lilian Araujo Rodrigues

Assessment Notes

Taxonomic notes

Spores resemble those of aged spores of S. pellucida under a dissecting microscope, except they have a smaller size range and few spores are oblong. They also are almost indistinguishable from spores of S. dipurpurascens, which is very similar in size, shape, and color and differs in its inner wall structure by having only one thin layer in gw1 instead of two layers.

Why suggested for a Global Red List Assessment?

We suggest this species to be categorized as Least Concern (LC).

Geographic range

The species is known in 15 countries.

Population and Trends

There are about 146 records in 15 countries (GBIF), when searching Scutellospora calospora.

Population Trend: Uncertain

Habitat and Ecology

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

Subtropical/Tropical Dry ForestSubtropical/Tropical Moist Lowland Forest


It presents no evident threat. However, it is found in the Atlantic Forest, a hotspot, in the Amazonia and Cerrado (also a hotspot). Also, Caatinga is threatened with desertification.

Housing & urban areasShifting agricultureAgro-industry grazing, ranching or farmingUnintentional effects (species being assessed is not the target)Unintentional effects (species being assessed is not the target)

Conservation Actions

Most records are in area with native vegetation of Brazil. 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




Koske R. E., Walker C. 1986. Species of Scutellospora (Endogonaceae) with smooth-walled spores from maritime sand dunes: two new species and a redescription of the spores of Scutellospora pellucida and Scutellospora calospora. Mycotaxon 27, 219-235.
Jobim, K., Vista, X. M., & Goto, B. T. 2018. Updates on the knowledge of Arbuscular Mycorrhizal Fungi (Glomeromycotina) in the Atlantic Forest biome–an example of very high species richness in the Brazilian landscape. Mycotaxon, 133(1), 209-209.
Wang, F. Y., & Shi, Z. Y. 2008. Biodiversity of arbuscular mycorrhizal fungi in China: a review. Advances in Environmental Biology, 2(1), 31-39.
Marinho, F., da Silva, I. R., Oehl, F., & Maia, L. C. 2018. Checklist of arbuscular mycorrhizal fungi in tropical forests. Sydowia, 70, 107-127.
Cofré, M. N., Soteras, F., del Rosario Iglesias, M., Velázquez, S., Abarca, C., Risio, L., ... & Lugo, M. A. 2019. Biodiversity of Arbuscular Mycorrhizal Fungi in South America: A Review. In Mycorrhizal Fungi in South America (pp. 49-72). Springer, Cham.

Country occurrence

Regional Population and Trends

Country Trend Redlisted