FungalpediaNote

Fungalpedia – Note 553, Pseudopyricularia    Pseudopyricularia Klaubauf, M.-H. Lebrun & Crous Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Fungal pathogens. Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1  Classification: Pyriculariaceae, Magnaporthales, Sordariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi.  Pseudopyricularia, belongs to the family Pyriculariaceae (Ascomycota), is morphologically similar to the type genus Pyricularia but differs in having determinate, short, brown, finely roughened conidiophores with a rachis with flat-tipped denticles (Klaubauf et al. 2014). Pseudopyricularia was proposed as a new genus together with the type species, viz. Pseudopyricularia kyllingae. This plant pathogenic Pseudopyricularia possesses distinct characteristic features such as hyaline, branched, smooth, septate hyphae with solitary, branched or unbranched, erect, brown, septate, conidiophores; terminal, sometimes intercalary, integrated, brown, finely roughened conidiogenous cells, forming a rachis with flat-tipped denticles; and obclavate, solitary, pale brown, finely [...]

Fungalpedia - Note 504, Pseudorhizidiaceae    Pseudorhizidiaceae Doweld Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Chytridiomycota. Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1  Classification: Chytridiales, Chytridiomycetidae, Chytridiomycetes, Chytridiomycotina, Chytridiomycota, Fungi Pseudorhizidiaceae was introduced by Doweld (2014). This family is characterized by a unique morphology with a monocentric thallus, eucarpic, endogenous, and interbiotic. The sporangia are oval to spherical with multiple inoperculate discharge pores. Rhizoids branch from a single main rhizoidal axis with finely divided tips. The resting spores were spherical and epibiotic. Zoospores are spherical and posteriorly uniflagellate, with solitary to multiple lipid globules. Simple cisternae and microbodies covering lipid globules (Powell et al. 2013). The endoplasmic reticulum traverses ribosomal aggregates, the nucleus is partially embedded in ribosomal aggregates, and microtubules are not organized into roots. The flagellar plug [...]

Fungalpedia – Note 497, Pseudoschismatomma   Pseudoschismatomma Ertz & Tehler Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Lichenicolous fungi. Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1  Classification: Roccellaceae, Arthoniales, Arthoniomycetidae, Arthoniomycetes, Pezizomycotina, Ascomycota, Fungi.  Pseudoschismatomma was proposed as a monotypic genus within Roccellaceae, Arthoniales as Arthoniomycetes by Ertz et al. (2014), and P. rufescens as the type species. This species was initially described as Opegrapha rufescens by Persoon (1794). Pseudoschismatomma rufescens morphologically resembles Schismatomma graphidioides, but P. rufescens has a distinct brown true exciple and the ascospores are shorter (16–27×3–5 μm) than S. graphidioides (ascospores 24–36 (-40) × (2.5-) 3–3.5 μm) (Ertz et al. 2014, Cannon et al. 2021). Pseudoschismatomma is characterized by small, immersed, often slightly raised apothecia with a fully exposed disc, a thin true exciple that is often surrounded by a thin whitish pseudothalline margin, and [...]

Fungalpedia - Note, 250 Pseudoseptoria   Pseudoseptoria Speg. Citation when using this entry: Aumentado et al. 2024 (in prep) – Fungalpedia, plant pathogens.  Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1. Classification: Saccotheciaceae, Dothideales, Dothideomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi Pseudoseptoria was introduced by Spegazzini (1910) to accommodate its type species Pseudoseptoria donacis. Wijayawardene et al. (2012) classified Pseudoseptoria within Ascomycota as genera incertae sedis, whereas Quaedvlieg et al. (2013) positioned Pseudoseptoria within Dothioraceae. However, Thambugala et al. (2014) and Wijayawardene et al. (2017) accepted Pseudoseptoria as a separate genus within Saccotheciaceae. Pseudoseptoria is characterised by submerged, branched, septate, and brownish mycelium. Pycnidial conidiomata can be either solitary or arranged linearly. The conidiomata are immersed, brown, and globose, consisting of thin-walled walls made up of pale brown cells in an angular pattern. Notably, Pseudoseptoria has distinct central circular ostioles. The conidiogenous cells are separate, determinate, or [...]

Fungalpedia – Note 407, Pseudospiromastix   Pseudospiromastix Guarro, Stchigel & Cano Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Ascomycota. Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1           Classification: Incertae sedis, Incertae sedis, Eurotiomycetidae, Eurotiomycetes, Pezizomycotina, Ascomycota, Fungi. Pseudospiromastix was introduced by Rizzo et al. (2014) as a monotypic genus and typed as P. tentaculata based on the morphology and phylogeny of LSU, which is etymologically based on the genus name Spiromastix. However, the name Pseudospiromastix and the new combination P. tentaculata are nomenclaturally invalid because there is no basionym fully cited (Hirooka et al. 2016). Hirooka et al. (2016) validated Pseudospiromastix and placed it in Spiromastigaceae, based on the phylogenetic tree of SSU + LSU. Currently, only one species has been introduced in this genus, which has been isolated from soil in Europe (Italy) and Africa (Nigeria, Rwanda, and South [...]

Fungalpedia – Note 285, Pseudosporidesmium   Pseudosporidesmium K.D. Hyde & McKenzie  Citation when using this entry: Perera et al. 2024 (in prep) – Fungalpedia, genera described in 2016.  Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1 Classification: Pseudosporidesmiaceae, Xylariales, Xylariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi Su et al. (2016) observed that the morphology of Sporidesmium knawiae (Crous et al. 2008) is distinct from other Sporidesmium species. Therefore, the hyphomycetous genus Pseudosporidesmium was established (in Xylariomycetidae, incertae sedis) to accommodate S. knawiae (as Pseudosporidesmium knawiae) (Su et al. 2016). The second species, P. lambertiae, was added, and the genus was placed in the new family Pseudosporidesmiaceae by Crous et al. (2017). Pseudosporidesmium is characterized by black, erumpent, and sporodochial colonies. The mycelium is composed of branched, septate, pale brown, and smooth-walled hyphae. Conidiophores are single or aggregated in [...]

Fungalpedia - Note 352, Pseudosydowia   Pseudosydowia Thambug. & K.D. Hyde Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Parasites. Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1           Classification: Saccotheciaceae, Dothideales, Dothideomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi Pseudosydowia (Saccotheciaceae) was established by Thambugala et al. (2014) and typified with Pseudosydowia eucalypti (Crous et al. 2003). The type species was described as Sphaerulina eucalypti before being transferred to Sydowia (Verwoerd et al. 1931). Sexual morph of Pseudosydowia is characterized by subepidermal, amphigenous, black, erumpent, globose ascomata, separated or aggregated in clusters, with apical ostiole. The peridium consists of several layers of dark-brown textura angularis. Eight-spored, bitunicate, fasciculate, broadly ellipsoid to clavate, straight to slightly curved asci with a well-developed ocular chamber. Ascospores are subsessile, bi- to multiseriate, septate, obovoid to ellipsoid, and have obtuse ends. In contrast, the [...]

Fungalpedia - Note 436, Pseudoteratosphaeria   Pseudoteratosphaeria Quaedvl. & Crous Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Ascomata. Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1  Classification: Teratosphaeriaceae, Mycosphaerellales, Dothideomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi. Based on phylogenies of a combined ITS, LSU, RPB2, TEF-1α and TUB alignment, Quaedvlieg et al. (2014) introduced Pseudoteratosphaeria within Teratosphaeriaceae, Mycosphaerellales in Dothideomycetes with the type species Pseudoteratosphaeria perpendicularis. This type of species was initially described as Mycosphaerella perpendicularis by Crous et al. (2006) (≡ Teratosphaeria perpendicularis). While, Pseudoteratosphaeria flexuosa, P. gamsii, P. ohnowa, P. perpendicularis, P. secundaria and P. stramenticola also have been introduced at the same time (Quaedvlieg et al. 2014). Members of this genus can be foliicolous, plant pathogenic or saprobic, morphologically similar to species of Teratosphaeria, and can only be distinguished based on DNA phylogeny. This genus is characterized [...]

Fungalpedia - Note 1 Pseudotruncatella   Pseudotruncatella R.H. Perera, Camporesi, Maharachch. & K.D. Hyde Citation: Bhunjun et al. 2023 – Fungalpedia, genera described in 2018, Mycosphere (in press) Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1 Perera et al. (2018) introduced Pseudotruncatella in Amphisphaeriales genera incertae sedis based on analysis of combined LSU, ITS, and SSU sequence data. Three species have been reported. Pseudotruncatella bolusanthi Crous was introduced from the living leaves of Bolusanthus speciosus in South Africa, and the family Pseudotruncatellaceae was introduced to accommodate Pseudotruncatella in Amphisphaeriales (Crous et al. 2019). Pseudotruncatella bolusanthi can be distinguished from P. arezzoensis based on its smaller, 2-septate conidia (17–20 × 6.5–7 μm vs 20–25 × 5.4–6.5 μm, 3-septate in P. arezzoensis). Pseudotruncatella camporesii Goonas. & Hyde was introduced from a dead stem of Helichrysum sp. in Italy (Hyde et al. 2020) and it [...]

Fungalpedia - Note 498, Psilolechiaceae   Psilolechiaceae S. Stenroos, Miądl. & Lutzoni Citation when using this data: Tibpromma et al. (in prep.) – Fungalpedia, Lichenicolous fungi. Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1  Classification: Psilolechiaceae, Lecanorales, Lecanoromycetidae, Lecanoromycetes, Pezizomycotina, Ascomycota, Fungi. Psilolechiaceae, a new family in Lecanoromycetes of lichenized fungi, is introduced to accommodate all species of Psilolechia with the type species Psilolechia lucida by Miadlikowska et al. (2014), based on phylogenetic analyses. Psilolechiaceae is a monogeneric family classified in the order Lecanorales, comprising crustose lichens with effuse, ecorticate, and leprose thalli, and the species of Psilolechiaceae prefer shaded, humid places. The family Psilolechiaceae is characterized by immarginate apothecia, 8-spored, cylindrical-clavate, elongate K/I+ dark blue tube-like structure, non-amyloid ascus wall, K/I+dark blue outer layer asci, oblong-ovoid to dacryoid, and hyaline ascospores (Miadlikowska et al. 2014). Type genus: Psilolechia A. Massal. Other accepted species: Species Fungorum – search Psilolechiaceae Figure 1 – Line drawing of Psilolechia lucida. Redrawn from www.stridvall.se.   Reference Miadlikowska J, Kauff F, [...]