Funneliformis species generally have an easily visible septum in the area of the spore base, and their are regularly funnel-shaped to cylindrical. Funneliformis halonatus differs from F. caledonius in having an   poorly separable outer wall and echinulate inner wall the nonmucilagenous, separable outer wall and smooth inner wall of the latter (Oehl et al., 2011; Rose; Trappe, 1980).

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

The species is registered in 8 countries. However, this number may be higher in other countries.

The species, according to GBIF, is registered only four ocorrences in three countries. However, this number may be higher in other countries.

This species occurs in different Brazilian biomes: Amazon, Atlantic Forest, Cerrado and Caatinga.

In Brazil, the specie can be found in Tropical rainforest and Tropical Dry Forest. However, these forests currently have higher rates of deforestation, especially the Atlantic Forest, which is considered a hotspot.

The isolation of this fungus in controlled condition represents an advance for the conservation of this species, which may help in the maintenance of this species in the future.

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

None.

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.
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.