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Thelephora cinereoumbrina (Bres.) Kõljalg, I. Saar & Svantesson 2024

Syn.: Tomentella cinereoumbrina (Bres.) Stalpers 1993

Basidiome: adherent, felt-like
Hymenophore: smooth, gray to hazel-brown
Margin: same color as the hymenophore, inconspicuous
Rhizomorphs: not present
Subiculum: same color as the hymenophore

Subicular hyphae: hyaline to brownish, occasionally with clamps, thick-walled, not encrusted, 3-6 µm wide
Subhymenial hyphae: hyaline, occasionally with clamps, thin-walled, not encrusted, 3.5-5 µm wide
Cystidia: not present
Basidia: hyaline, partially cyanescent, occasionally with basal clamps
Spores: brownish, irregularly rounded in front view and regularly elliptical laterally, 8-11 x 6-8 µm, spines up to 1 µm long

Distribution: worldwide in temperate regions, considered a rare species in Germany
Note: This species is mainly distinguished from the completely clampless Thelephora fuscocinerea by the occasional presence of clamps on the hyphae.