single-layer One of the most delicious not only brown-cap boletuses, but also mushrooms in general. This variety, contrary to the generally accepted opinion, grows not under birches - but under white poplars and aspens. - It's called Brown-cap boletus Poplar. The fungus is high-yielding; in the past mushroom year wore buckets. In fractures and damage, the flesh is colored orange-pink and saturated-turquoise - as can be seen from the picture.