#326 American Yellow Fly Agaric (Amanita muscaria var. guessowii)

25 January 2021

This variety of the well known species Amanita muscaria is distinguished by its yellow to orange, rather than red, cap. Other trademark features are shared with the red version: numerous warts on the cap, a ring on the upper stem, and a distinctive stem base that features several shaggy “zones” of universal veil material on the upper edge of a basal bulb. Amanita muscaria var. guessowii is found in the northern Midwest and in eastern North America from the boreal forests of the northeast, south to the Appalachians.

Mycorrhizal with hardwoods and conifers; growing alone, scattered, or or gregariously, sometimes in arcs or fairy rings; summer and fall; widely distributed in the northern Midwest (south to Illinois) and in northeastern North America (south to the Appalachians).

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