Rubroboletus satanas (formerly Boletus satanas), which is commonly known as Satan's Bolete is a lethally poisonous fleshy bolete that has a smooth, bun-shaped cap that is almost white. Boletus satanas is best identified by its orange to blood-red pores and prominent yellow to a blood-red net pattern. It also has a fat, yellow to red stem.
compact, at first it is hemispheric with an inrolled margin, later flattening in the shape of a pad, and in older specimens, it is bent irregularly. The pileus at first greyish white, later more greenish ochre or leather colour. The surface of the cap is finely tomentose, later smooth, and often slightly sticky in wet weather. Pores
are small, circular, and red, sometimes blood-red, but orange at the margin. The free to slightly adnate tubes are yellow then olive, blue were cut. Stem
yellow background covered with a hexagonal close-meshed net that starts bright red and turns dark blood-red. Often very bulbous and usually wider than it is long. When young almost spherical.
(Boletus satanas) on the www.first-nature.com web site.
Photos by Holger Krisp and licensed under the Creative Commons Attribution 3.0 Unported license.