Stratum of tubes separating, but not easily, cap with coarse, prominent scales, strobilomyces.
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc."
George Francis Atkinson
In the genera strobilomyces and Boletinus, two other fleshy genera of this family, the separation is said to be more difficult than in Boletus, but it has many times seemed to me a "distinction without a difference."
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc."
George Francis Atkinson
strobilomyces strobilaceus changes color when cut, and is edible.
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc."
George Francis Atkinson