Amanita phalloides

Overview

Royal Botanic Gardens Victoria describes a pale to greenish cap, white free gills and a white spore print. A membranous ring and a basal cup are remnants of the veils, and the ring may disappear with age. These features are descriptive and do not guarantee safe identification.

The fungus forms a mutually beneficial mycorrhizal association with trees. Its Australian records come from South Australia, Victoria and the Australian Capital Territory. They are linked mainly to introduced trees, especially oaks. The first confirmed Australian records date to the 1960s, but earlier undetected presence is possible.

Wang and colleagues (2023) studied invasive Californian populations using population genomics and experiments. They found both heterokaryotic and homokaryotic mushrooms, which shows that unmated individuals can reproduce sexually. The authors suggest this flexibility may help the fungus spread. That is a hypothesis, not a measured universal cause of invasion.

Origins & earliest records

The original description was not verified. Australian dates are first confirmed detections, not arrival dates.

Evidence & interpretation

A herbarium account from Royal Botanic Gardens Victoria and a 2023 population-genomic study in Nature Communications.

Selected bibliography

Documented works and useful reading. This is not a list of every appearance.

1. 01

   Death Cap – Amanita phalloides

   Royal Botanic Gardens Victoria · n.d.

   Selected bibliography; herbarium account.

2. 02

   Invasive Californian death caps develop mushrooms unisexually and bisexually

   Wang et al. · 2023

   Selected bibliography; reproductive genomics.

Family, evolution & connections

Taxonomic classification

A hierarchy of classified groups, not a chain of direct ancestors.

Source note: Ranked groups in the NCBI Taxonomy snapshot accessed 7 October 2026; these are not identified direct ancestors. NCBI provides a database classification rather than an independent nomenclatural authority.

1. domainEukaryota
2. kingdomFungi
3. phylumBasidiomycota
4. classAgaricomycetes
5. orderAgaricales
6. familyAmanitaceae
7. genusAmanita
8. speciesAmanita phalloides

References

Sources supporting this profile. Linked pages have their own scope and editorial standards.

1. Institutional accountDeath Cap – Amanita phalloidesResearch access: 2026-10-06
2. Peer-reviewed articleInvasive Californian death caps develop mushrooms unisexually and bisexuallyResearch access: 2026-10-06
3. Scientific classification referenceNCBI Taxonomy: Amanita phalloidesResearch access: 2026-10-07

Image credits

A sourced illustration has not yet been added. This gap is included in the coverage record.