# Panther cap (Amanita pantherina)

**Amanita pantherina**

**Known today as.** A brown, white-spotted amanita of European woods.

Kind: Fungus  
Poisoning: Ibotenic acid and muscimol (pantherine syndrome) (https://thethinkingpress.org/materia-medica/poisons/pantherine)  
Toxic: yes

> **Caution.** Poisonous; severe delirium.

## What was it used for?

None.

## What does modern science say?

Carries more ibotenic acid and muscimol than the fly agaric, and poisons more severely.

## Pharmacognosy and toxicology

- **ibotenic acid**: several times the fly agaric’s
- **muscimol**: 

**Mechanism.** As the fly agaric.

**Dose.** One cap; severe delirium and coma.

**Standing.** None.

## What lore surrounds it?

The fly agaric’s darker cousin.

## Sources

- Benjamin, D. R. (1995). *Mushrooms: Poisons and Panaceas*.
- Michelot, D., and Melendez-Howell, L. M. (2003). *Mycological Research* 107.

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*Panther cap.* In *Materia Medica*, edited by B. C. P. Statema. Version 1, revised 2026-09-25. The Thinking Press. https://thethinkingpress.org/materia-medica/panther-cap

Historical description, not medical advice.