(2009) resolves Stattic cell line the problem of polyphyly in this group. Cyphellostereum D.A. Reid, Beih. Nova Hedwigia, 18: 336 (1965). Type species: Cyphellostereum pusiolum (Berk. & M.A. Curtis) D.A. Reid, Beih. Nova Hedwigia 18: 342 (1965), ≡ Stereum pusiolum Berk. & M.A. Curtis, J. Linn. Soc., Bot. 10 (no. 46): 330 (1869) [1868]. Basidiomata usually absent, cyphelloid when present; hymenium irregular; cystidia absent; clamp connections absent; lichenized with cyanobacteria; thallus appressed filamentose-crustose, undifferentiated, gray or white, hyphal sheath cells simple, not jigsaw puzzle shaped.

Phylogenetic support We included only one species of Cyphellostereum in our Supermatrix analysis (as Dictyonema phyllogenum), where it appears as sister to the Dictyonema-Cora clade with 100 % MLBS support, and distal to Arrhenia. Previous analyses by Lawrey et al. (2009) show D. phyllogenum together with the type of Cyphellostereum, C. pusiolum, in a strongly supported monophyletic clade (98 % MP and 100 % MLBS). Dal-Forno et al. (2013) show strong support for

a monophyletic Cyphellostereum in their combined ITS-LSU-RPB2 analysis (73 % MLBS, 0.99 BPP). In Lawrey et al. (2009), Cyphellostereum is distal to Eonema and Arrhenia and selleck screening library basal to the Dictyonema–Cora clade. The topology shown in the combined ITS-LSU-RPB2 analyses of Dal-Forno et al. (2013) is similar,

but Cyphellostereum appears as sister to Dictyonema, while Eonema is basal to both. Species included Type Cyphellostereum pusiolum. Dictyonema phyllogenum (Müll. Arg.) Zahlbr. selleck is included based on molecular phylogenies (Dal-Forno et al. 2013; Lawrey et al. 2009). Several undescribed species also belong in this clade. Cyphellostereum laeve (Fr. : Fr.) D.A. Reid is excluded based on phylogenetic analyses of Larsson (2007) that place it in the Hymenochaetales. Comments Lawrey et al. (2009) were the first to show the type of Cyphellostereum is near the base of the clade named here as subf. Lichenomphalioideae, and they also confirmed Oberwinkler’s (1970) observations of an associated lichenized thallus. The genus is similar to Dictyonema s.s. in overall morphology but lacks the jigsaw-puzzle-shaped hyphal sheath cells. Arrhenia Fr., Summa Veg. Scand., Section Post. (Stockholm): 312 (1849). Type species: Arrhenia auriscalpium (Fr.) Fr., Summa Veg. Scand., Section Post. (Stockholm): 312 (1849), ≡ Cantharellus auriscalpium Fr., ZD1839 research buy Elench. fung. (Greifswald) 1: 54 (1828)].