Amanita vaginata, commonly known as the grisette, is an edible mushroom in the fungus family Amanitaceae. Unlike many other Amanita mushrooms, A. vaginata lacks a ring on the stem. The cap is gray or brownish, 5 to 10 centimetres (2.0 to 3.9 in) in diameter, and has furrows around the edge that duplicate the gill pattern underneath. It has a widespread distribution in North America, and is thought to be part of a species complex that includes other…