Seimatosporium Corda, in Sturm, Deutschl. Fl., 3 Abt. (Pilze Deutschl.) 3(13): 79 (1837)
Xylariomycetidae, Amphisphaeriales, Sporocadaceae, Seimatosporium
Saprobic on leaves, stem and bark of several plants, pathogenic on leaves of Eucalyptus spp. Sexual morph: Discostroma-like. Asexual morph: Conidiomata dark brown to black, acervular, solitary to gregarious, superficial to immersed, unilocular, globose to subglobose. Peridium composed of brown thin or thick-walled of textura angularis. Conidiophores hyaline, cylindrical, filiform, septate, branched. Conidiogenous cells hyaline, holoblastic, annellidic, integrated or discrete, determinate. Conidia variable, cylindrical, fusiform or clavate or obovoid, (2–)3(–5)-septate, eguttulate, medium cells brown, basal cell hyaline, with or without basal appendage, or with the apical cell provided with a single, cellular, simple or branched appendage, basal cell truncate, continuous or occasionally constricted at the septa (adapted from Maharachchikumbura et al. 2016).
Type species: Seimatosporium rosae Corda, in Sturm, Deutschl. Fl., 3 Abt. (Pilze Deutschl.) 3(13): 79 (1833)
Notes: Seimatosporium species are widely distributed, occurring as saprobes or pathogens (Norphanphoun et al. 2015, Maharachchikumbura et al. 2016, Wijayawardene et al. 2017, Wanasinghe et al. 2018). It was introduced by Corda (1833). Phylogenetically, they have been linked to Discostroma sexual morphs (Tanaka et al. 2011). However, there are no sequence data for the type species; this requires further study.
Species illustrated in this entry:
Seimatosporium rosae Corda
Corda F. 1833 – In Sturm's Deutschl. Flora 3, 85
Maharachchikumbura SSN, Hyde KD, Jones EBG, McKenzie EHC et al. 2016 – Families of Sordariomycetes. Fungal Diversity 79, 1–317
Norphanphoun C, Maharachchikumbura SSN, Daranagama A, Bulgakov TS et al. 2015 – Towards a backbone tree for Seimatosporium, with S. physocarpi sp. nov. Mycosphere 6, 385–400
Tanaka K, Endo M, Hirayama K, Okane I et al. 2011 – Phylogeny of Discosia and Seimatosporium, and introduction of Adisciso and Immersidiscosia genera nova. Persoonia 26, 85–98
Wanasinghe DN, Phukhamsakda C, Hyde KD, Jeewon R et al. 2018 – Fungal diversity notes 709–839: taxonomic and phylogenetic contributions to fungal taxa with an emphasis on fungi on Rosaceae. Fungal Diversity 89, 1–236
Wijayawardene NN, Hyde KD, Rajeshkumar KC, Hawksworth DL et al. 2017 – Notes for genera: Ascomycota. Fungal Diversity 86, 1–594