... P. dryinus as given by Persoon, and as followed by Fries and most later writers, the pileus is definitely lateral, and more or less dimidiate, while in P. corticatus Fr., the pileus is entire and the stem rather long and eccentric. Stevenson suggests (p. 166) that corticatus is perhaps too closely allied to dryinus. The plants in our Fig. 110 agree in all respects with P. corticatus, except ... — Studies of American Fungi. Mushrooms, Edible, Poisonous, etc. • George Francis Atkinson
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