Obba and Sebipora, new polypore genera related to Cinereomyces and Gelatoporia (Polyporales, Basidiomycota)

Abstract

Cinereomyces clade is a newly proposed monophyletic group of polypores containing currently four genera and five species, including two promising biopulping fungi, Ceriporiopsis rivulosa and C. subvermispora. The Cinereomyces clade is well-delimited in nrDNA-based phylogenetic analysis, but its position in Polyporales remains unclear. Its closest relative may be found in the core polyporoid clade. Only a few morphological characters are common for all the species in the clade, e.g. CB-and CRB+ hyphae, white fruiting bodies, presence of oil, and middlesized spores. Culturally, the species are unified by producing simple-septate generative hyhpae in the margin, which produce simple-clamped hyphae backwards. The genus Gelatoporia is the correct place for Ceriporiopsis subvermispora. Two new genera are described in the group: Obba to incorporate C. rivulosa and a new austral species, Obba valdiviana, known from southern Argentina and recorded here also from Tasmania, and Sebipora to accommodate a new species from tropical Asia, S. aquosa. ITS sequences imply that Eurasian Gelatoporia subvermispora may belong to a different species from the North American one. G. subvermispora is recorded as new to Indonesia.

Phylogeny and taxonomy of Ceriporiopsis (Polyporales) with descriptions of two new species from southern China

“…Tomšovský et al (2010) revealed that the taxon belongs to the phlebia clade, and put it into Gelatoporia. However, recent phylogenetic studies showed that it clustered into the gelatoporia clade (Miettinen & Rajchenberg 2012, Binder 2013. Our research also showed that it is clustered in a separate gelatoporia clade (Fig.…”

Elaphroporia ailaoshanensis gen. et sp. nov. in Polyporales (Basidiomycota)

“…However, Ceriporia differs from Elaphroporia by the generative hyphae IKI–, CB– (Jia et al 2014). Additionally, in molecular studies, Ceriporia fell into the phlebia clade (Miettinen and Larsson 2011, Miettinen and Rajchenberg 2012, Miettinen et al 2011, Binder et al 2013) which is also the same as in the authors’ study (Fig. 1).…”

“…Recently, molecular studies involving Meruliaceae P. Karst. have been carried out (Binder et al 2005, 2013, Miettinen and Larsson 2011, Miettinen and Rajchenberg 2012, Hibbett et al 2016, Miettinen et al 2016). …”

Lawrynomyces, a new genus of corticioid fungi in the Hymenochaetales

“…P. Karst. Systematic position of some species from both lineages were independently (intentionally or not) confirmed in other molecular studies (Miettinen, Larsson 2011;Miettinen, Rajchenberg 2012;Nakasone, Burdsall 2012;Tellería et al 2012 In all published phylogenies, Hyphoderma capitatum was recognized as a member of the Rickenella-clade in the Hymenochaetales and clustered in a clade separate from species of Peniophorella. Morphologically, H. capitatum differs from Peniophorella species in having hyphae without clamps, suburniform-pedunculate basidia, basidiospores with slightly thickened walls, and lacking echinocysts and stephanocysts.…”