Amanita malayensis is molecularly well-defined
without close phylogenetic relatives in the Asian
mycota. Based on the data presented in this study, its
closest phylogenetic relatives are A. javanica, A. rubromarginata,
and Amanita sp.1.
This fungus has only been recorded growing in association with Hopea odorata (Dipterocarpaceae) from one location in a popular public park.
In Malaysia, this ectomycorrhizal fungus has been found growing in small groups among planted Hopea odorata (Dipterocarpaceae) in a public park in the state of Perak and in an urban park in the state of Penang. According to GenBank data (ITS: AB451969, AB458887), this taxon occurs in Thailand and is misidentified as A. hemibapha subsp. javanica. It has also been observed growing in association with Dipterocarpus alatus and Shorea spp. in northeast Thailand.
Amanita malayensis has only been reported from two park-like sites in Malaysia growing in association with planted Hopea odorata (Dipterocarpaceae). It has also been reported from north-east Thailand growing under Dipterocarpus alatus and Shorea sp. Information on its natural range, habitat and population status is presently inadequate.
Population Trend: Uncertain
This ectomycorrhizal fungus grows in small groups forming fairy-rings under Hopea odorata in Malaysia. It was collected from the same location in one public park during the months of July and March, in 2007 and 2008, respectively and most recently observed under H. odorata in an urban park in another location in May 2019. In Thailand it has also been observed forming fairy rings under Dipterocarpus alatus and Shorea sp. in north-east Thailand. More information is needed about its natural habitat and distribution.
Information insufficient to make an accurate assessment.
Comprehensive surveys and inventories for the region are needed to determine the occurrence and distribution of the fungus.
It is not consumed in Malaysia but it is popularly collected for the table in Thailand.
Li-Ping Tang, Su-See Lee, Nian-Kai Zeng, Qing Cai, Ping Zhang & Zhu L. Yang (2017): Notes on Amanita section Caesareae from Malaysia, Mycologia, DOI:10.1080/00275514.2017.1394789