Agaricus biannulatus
A small-to-medium Agaricus with a double ring, described in 2011 from Sardinia by Mua, Parra, Cappelli and Callac. Almost nothing is published beyond the original description, and it has never been cultivated.
Where it grows wild
A ground-dwelling saprotroph; the type area is Mediterranean Sardinia, where Agaricus of this kind fruit in soil and litter under scrub and pines.
Records carry no elevation; the Sardinian and central Italian sites are near sea level to about 300 m.
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The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:
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More Agaricus
Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app.