A very common local tall, slender Amanita with brilliant white cap (sometimes with discolored small umbo) appearing early in summer under birch (Betula pendula). Two issues with it: a) I sometimes come across specimens with visible grayish tinge, i.e. the center and striations on cap edge are grayish, yet not gray enough for what looks like A. vaginata and also grows here. b)visually identical white Amanitas (a bit more petite, perhaps) sometimes grow under pine (Pinus sylvestris) in pine-only forest. The question is whether such host diversity is normal or they need a closer look at them.