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

Rhizophagus clarus (T.H. Nicolson & N.C. Schenck) C. Walker & A. Schüßler

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Scientific name
Rhizophagus clarus
(T.H. Nicolson & N.C. Schenck) C. Walker & A. Schüßler
Common names
IUCN Specialist Group
Assessment status
Proposed by
Lilian Araujo Rodrigues
Comments etc.
Lilian Araujo Rodrigues

Assessment Notes

Taxonomic notes

Rhizoglomus clarum previously assigned as Glomus clarus and Rhizophagus clarus is recognized by spores size and color hyaline found for most glomoid species, with the latter attributed to the thickness of the second laminate layer of the spore wall (L3), which is very thin in white spores and much thicker in yellow to yellow-brown spores (INVAM).

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

Species distributed worldwide. The valid species and its synonym have different occurrence data, Glomus clarus with 2 occurrences and Rhizophagus clarus with 208 occurrences (GBIF).

Population and Trends

A very common species in several countries. It has 210 data according to GBIF in 16 countries.

Population Trend: Stable

Habitat and Ecology

This species occurs in all Brazilian biomes: Amazon, Atlantic Forest, Cerrado, Caatinga, Pampa and Pantanal.

Subtropical/Tropical Dry ForestSubtropical/Tropical Moist Lowland Forest


It presents no evident threat, being very common at least in Brazil.

Housing & urban areasShifting agricultureUnintentional effects (species being assessed is not the target)

Conservation Actions

Most records are in area with native vegetation of Brazil.

Site/area protectionResource & habitat protectionAwareness & communications

Research needed

Other countries should be better surveyed for a better understanding of distribution of the species.

TaxonomyPopulation size, distribution & trendsLife history & ecology

Use and Trade




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.
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.
Winagraski, E., Kaschuk, G., Monteiro, P. H. R., Auer, C. G., & Higa, A. R. 2019. Diversity of arbuscular mycorrhizal fungi in forest ecosystems of Brazil: a review. Cerne, 25(1), 25-35.

Country occurrence

Regional Population and Trends

Country Trend Redlisted