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Ascocoryne sarcoides (Jacquin ex S.F. Gray) Groves & Wilson, op. cit.: 40(1967)."
Apothecia superficial, clustered, cupshaped, sessile or short stalked, disc concave or flattened, often irregular and lobed, up to 10mm across, reddish-purple, exterior usually minutely scurfy, concolorous. Asci cylindric-clavate, up to 160 x 10 µm, 8 spored; ascospores often biseriate, elliptical to inequilateral, 10 - 19 x 3-5 ym, at first non-septate with 2 oil drops, becoming usually 1-septate, occasionally 3-septate, sometimes germinating within the ascus, paraphyses slender, often abruptly swollen to 4 ym thick at the tip. Apothecia are almost invariable accompanied by a similarly colored conidial state which has been called Coryne dubia Person ex S.F. Gray and Pirobasidium sarcoides von Höhnel. The name Coryne applies to the conidial state, hence a separate generic name had to be coined for the apothecia. On stumps and fallen logs of all kinds, esp. Fagus. August to December. Very common. "
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Ascocoryne cylichnium (Tulasne) Korf in Phytologia 21: 202 (1971) is very similar but often has larger apothecia and is distinguished by its long ascospores 18-30 x 4-6 ym, which become multiseptate and bud off spherical secondary spores while still in the ascus."
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Ascocoryne solitaria (Rahm) Dennis in Kew Bulletin 25: 343 (1971) has turbinate apothecia up to 1cm. diameter with light brown disc, drying black and ascospores 9-15 x 3,5-4 ym, usually 1-spetate, on dead wood."