1, Muscarine Pronunciation: dú xùn jiǎn; Muscarine (Muscarine), a natural alkaloid, is toxic and is found mainly in fungi of the genera Silkcap Umbelliferae and Cupressus, such as Frosty Cupressus. Muscarine has also been found in fungi of the genera Pleurotus and Micromycetes in doses that reach toxicity by ingestion.

2. Harmless traces of muscarinic have also been found in fungi of the genera Boletus, Wetas, Milkcaps, and Red Mushrooms. Some fungi have variable levels of muscarinic, such as the toxocarp, which is typically 0.0003% of fresh weight, compared to up to 1.6% of muscarinic in fungi of the genera Capsicum and Cupressus.