This species is the ectomycorrhizal fungus that lives only in symbiosis with the critically endangered Pinus amamiana. Therefore, I think that this species should also be included in the Red List.

This species is found only in the Pinus amamiana stands. Pinus amamiana is only present onYakushima and Tanegashima Islands, Kagoshima Prefecture in Japan.

This species is only sympatric with Pinus amamiana, so the population size is also dependent on the tree. The host population is approximately 2300 (Yakushima: 2000, Tanegashima: 300) individuals and is decreasing.

This species is the ectomycorrhizal fungus that lives only in symbiosis with the critically endangered Pinus amamiana. Therefore, the fungus is only present in forests dominated by P. amamiana. In addition, the fungus is hypocarpogean which produces fruiting bodies in the soil and the dispersal of its spores is dependent on animals.

The threat of this species is the same as the threat of endangered Pinus amamiana, as this species cannot survive without its host.

As this species has only recently been discovered, there has been no conservation action done on it. On the other hand, All areas where Pinus amamiana, the host of this species, is present are protected. NPOs are active on Yakushima and Tanegashima with the aim of conserving P. amamiana.