Cap brown with brown +/- appressed scales in age, smooth when young; disc plane to depressed, scales in center with raised tips, margin often inrolled. Stalk concolorous with cap, base blue-green to greenish black to black in age both externally and internally. Spines are decurrent, short (6 mm, up to 10 mm), reddish brown to violet brown with whitish tips. Habitat is with OAKS and other HARDWOODS (& maybe pines in some areas). Odor is reported as none and the taste is intensely bitter. Pigment unknown. KOH olive to black on the flesh. Clamp connections NOT observed on the hyphae.
The above description was provided by Darvin DeShazer in a small key he created to differentiate between Sarcodon imbricatus, S. squamosus and S. scabrosus based on Johannesson, Hanna, Svengunnar Ryman, Hjordis Lundmark and Eric Danell. 1999. Sarcodon imbricatus and S. squamosus – two confused species. Mycol. Res. 103 (11): 1447-1452.