Riederberga Tedersoo gen. nov.

Type species.

Riederberga sylviae Tedersoo.

Description.

Covers the monophyletic group in Riederbergaceae (Fig. 2). Phylogenetically delimited as the least inclusive clade covering sequence accessions EUK 1602903, EUK 1602242 and EUK 1602243 (Suppl. material 3).

Notes.

Based on ITS and LSU sequences, Riederberga is comprised of 5–6 species, some of which are represented by sequences EUK 1602859 (GSMc plot G 4770, Populus berolinensis dominated coppiced garden in Ubasalu, Estonia, 59.06755 ° N, 24.47842 ° E); EUK 1602912 (GSMc plot G 4772, Juniperus communis calcareous woodland soil in Kohatu, Estonia, 58.95934 ° N, 24.30017 ° E); EUK 1602761 (GSMc plot G 4434, mixed woodland soil in Kalli, Estonia, 58.53770 ° N, 24.06659 ° E); and EUK 1603687 (GSMc plot G 4229, Quercus robur woodland soil in Niidiaia, Estonia, 58.88603 ° N, 24.47280 ° E).