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Thelephora eulateritia Kõljalg, I. Saar & Svantesson

Syn.: Tomentella lateritia Pat. 1894

Basidiome: adhering, loose, felt-like to mold-like
Hymenophore: smooth to grainy, brick-red
Margin: lighter than the hymenophore, but usually inconspicuous
Rhizomorphs: absent
Subiculum: same color as or lighter than the hymenophore, partially very thin

Subicular hyphae: hyaline, with clamps, thin-walled, not incrusted, 2-4.5 µm wide
Subhymenial hyphae: hyaline, with clamps, thin-walled, not incrusted, 2.5-5 µm wide
Cystidia: absent
Basidia: hyaline to ochre, in H2O sometimes with reddish crystals in the plasma, with a basal clamp
Spores: brownish, partially triangular, rarely lobed, mostly somewhat irregularly round to elliptical, 7-8.5 µm, spines up to 1-1.5 µm long

Distribution: worldwide in temperate to subtropical regions, classified as a sporadically occurring species in Germany
Note: This is a species complex that has not yet been clarified. There are finds with very regular spores and finds with angular to lobed spores that would be more fitting for the American Thelephora subvinosa.

Thelephora eulateritia is primarily distinguished from Thelephora eucoerulea by the color of its hymenophore and also has somewhat more regular spores. Previous find locations suggest a calcareous species.

Zeichnung: H. Maser                                                    Foto: Thomas Rödel