 Basidiospores are roughly spherical in shape, with rough warty outgrowths (tubercles), nonamyloid, and have dimensions of 5.5–8 by 5.5–6.5 µm.The orange Hydnellum resembles the polypore "Phaeolus schweinitzii" when viewed from the top of the cap surface, but it has teeth instead of pores on the hymenium.Closely related and morphologically similar species in the genus "Hydnellum" include "H. congenum" (has thin flesh in the cap), "H. ferrugipes" and "H. earlianum" (has a smoother cap, and spines have sulfur-yellow tips, not white).