The Wikipedia article of the day for July 12, 2020 is Tricholoma pardinum.
Tricholoma pardinum is a gilled mushroom widely distributed across North America and Europe, as well as parts of Asia. It was first officially described by Christiaan Hendrik Persoon in 1801. The imposing fruit bodies (mushrooms) of T. pardinum appear in beech woodland in summer and autumn. The pale grey cap, up to 15 cm (6 in) in diameter, is covered with dark brownish to greyish scales. The gills are whitish, and are not attached to the stout white to pale grey-brown stalk. The spore print is white. One of the more toxic members of the genus Tricholoma, the species has been implicated in many episodes of mushroom poisoning, probably because it is a large, attractive mushroom with a pleasant smell and taste, and it bears a superficial resemblance to several edible species, like Tricholoma terreum. Ingesting T. pardinum—even in small quantities—results in a severe, persistent gastroenteritis caused by an unknown mycotoxin.