1994). Lignicolous fungi, however, have various nutritional strategies (Huhndorf et al. 2004). Stable isotope analyses would be useful in determining whether the ratios in Chrysomphalina match those of wood decomposers or biotrophic fungi. The clade comprising Cantharellula umbonata

selleck screening library and Pseudoarmillariella ectypoides is sister to the Lichenomphalia-Dictyonema clade (but without BS support) in our 4-gene backbone and Supermatrix analyses (Figs. 1 and 2). While the trophic nature of P. ectypoides is unknown, C. umbonata is associated with mosses (Lawrey et al. 2009). Fig. 1 Four-gene backbone analysis of Hygrophoraceae, representatives of the Hygrophoroid clade (Phyllotopsis, Pleurocybella, Macrotyphula, Tricholomopsis, Typhula MCC 950 and Sarcomyxa), and representatives of outgroups from the Entolomataceae, Marasmiaceae, Mycenaceae, Pleurotaceae and Tricholomataceae ss, rooted with Plicaturopsis crispa. Genes analyzed were ITS (ITS1, 5.8S & ITS2), LSU (LROR-LR5), SSU and RPB2 (between domains 6 and 7). ML bootstrap values ≥ 50 % appear above the branches. Heavily bolded branches have ≥ 70 % and lightly bolded branches have 50–69 % ML bootstrap support Fig. 2 Supermatrix Maximum Likelihood analysis of Hygrophoraceae ss. All taxa with LSU sequences were included; ITS (ITS1, 5.8S & ITS2), LSU (LROR-LR5), SSU and RPB2 (between domains 6 and 7) were also included, if available. ML

bootstrap values ≥ 50 % appear above the branches. Heavily bolded branches have ≥ 70 % and lightly bolded branches have 50–69 % ML bootstrap support At least two lichenized lineages appear within Hygrophoraceae, if Lichenomphalia including L. umbellifera is considered monophyletic (Lawrey et al. 2009). Lichenomphalia forms omphalinoid fruiting bodies associated VAV2 with green, eukaryotic photobionts, whereas the Dictyonema s.l. clade (including KPT-8602 cost Cyphellostereum, Acantholichen, Corella and Cora) features cyphelloid or corticioid basidiocarps and invariably associates with a novel cyanobacterial lineage, Rhizonema (Lawrey et al. 2009;

Lücking et al. 2009). Both lineages are primarily tropical montane to temperate and often co-occur over soil and between bryophytes on the ground. Seitzman et al. (2011) suggested that biotrophic relationships appear throughout Hygrophoraceae and that nutritional strategies were moderately conserved within lineages. The well documented ectomycorrhizal genus Hygrophorus and the lichen and moss symbionts in the genera Lichenomphalia, Dictyonema, Cora, Corella, Cyphellostereum, Eonema and Acantholichen (Lawrey et al. 2009) fall between Cuphophyllus at the base of the Hygrophoraceae and Hygrocybe, Gliophorus and Neohygrocybe in more distal branches of our 4-gene phylogenetic tree (Fig. 1). Categorization of genera by combined nitrogen and carbon isotope ratios in Seitzman et al. (2011) was partly concordant with the molecular phylogeny, pairing Hygrocybe with Gliophorus, while leaving Cuphophyllus, Hygrophorus and Humidicutis in separate groups. Seitzman et al.