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Page number:337 
Remarks (public):Cytidiella is close to Auriculariopsis Maire. According to Pouzar the main difference should be found in the nature of the hyphal walls, which are gelatinous in Auriculariopsis but should not be so in Cytidiella. However, the hyphae of the latter genus are at least partly swollen in KOH, and this character does not give any good distinction between the genera. However, there are other differences, which could motivate a generic separation. In Auriculariopsis the hyphal context is dimorphic, with an upper layer of thickwalled, non gelatinized hair hyphae, sharply distinguished from the gelatinous lower part of the fruitbody. In Cytidiella the fruitbody is homogenous without a sharp limit between the pubescence and the rest of the context. In this genus the hyphae of the upper-side are thinwalled and provided with clamps while in Auriculariopsis they are thickwalled and lack septa and clamps almost completely. We beleive that the delimitation of the two genera should better be based on these context characteristics. From available material it seems as if the growth in thickness of the hymenium is more pronounced in Cytidiella than in Auriculariopsis. 
Description type:Non-original description 
Description:Cytidiella Pouz. Ceska Myk. 8 p. 127, 1954.
Fruitbodies resupinate, more or less circular, when dry membranaceous, with hymenium smooth or more or less tuberculate, upperside whitish, felted; hyphae with clamps at all septa, parts of subicular hyphae ± swollen and gelatinized in KOH; no cystidia; basidia subclavate, with 4 sterigmata; spores allantoid to ellipsoid, thinwalled, smooth, non-amyloid.
Genotypus: Cytidiella melzeri Pouz.
 
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