The spore print is olive to olive-brown. The smooth spores are somewhat oblong to slightly ventricose (fattened in the middle), and measure 10–14 by 4–5 µm. The basidia (spore-bearing cells) are four-spored and measure 25–35 by 8–10 µm. Pleurocystidia (cystidia found on the faces of the tubes) are fuse-shaped and ventricose, with dimensions of 50–60 by 10–14 µm.
