In fistulina the tubes are free from each other though standing closely side by side.
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc."
George Francis Atkinson
The following key is not complete, but may aid in separating some of the larger plants: Tubes or pores free from each other, though standing closely side by side, fistulina.
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc."
George Francis Atkinson
Other species, as Coprinus comatus, and Coprinus atramentarius, are also available, together with fistulina hepatica, and Morchella esculenta.
"Fungi: Their Nature and Uses"
Mordecai Cubitt Cooke