Agaricus benesii

Pileipellis filamentous, with hyphae arranged in parallel and with simple septa (without clamp connections).

Lamellar edge with a large number of clavate terminal elements, with rounded tips.

Basidia cylindrical, clavate, 4-spored.

Spores ellipsoidal, light brown under the microscope, containing an oil droplet inside, a distinct lateral apiculus, and dextrinoid in Melzer's reagent.