Fungalpedia – Note 1976, Seiridium

 

Seiridium. Nees.

Citation when using this data: Hyde KD et al. 2020 – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1

Classification: Pestalotiopsidaceae, Amphisphaeriales, Xylariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi

 

Notes – Seiridium are characterized by 6-celled conidia (Jeewon 2003a, Maharachchikumbura et al. 2014b) and are widely distributed as saprobes and plant pathogens (Tsopelas et al. 2007). The genus was established by Nees (1816). Blogiascospora and Lepteutypa was identified as the sexual morph (Senanayake et al. 2015). Jaklitsch et al. (2016b) epitypified Seiridium marginatum and confirmed its sexual morph as Blogiascospora marginata based on molecular data. Seiridium spyridiicola is illustrated in this entry.

 

Type species: Seiridium marginatum Nees.

Other accepted species: Species Fungorum – search Seiridium.

 

image

 

Figure 1 – Seiridium spyridiicola (Material examined – ITALY, Forli-Cesena Province, near Camposonaldo – Santa Sofia, on dead and land cone of Picea excelsa, 15 April 2015, Erio Camporesi IT2444, MFLU 15-0813; living culture KUMCC 16-0115). a Appearance on host.
b Close up of several conidiomata. c Section of conidioma. d Wall of conidioma.
e, f Conidiogenous cells giving rise to conidia. f, g Conidiophores with conidia. h-k Conidia (upside down). Scale bars: a = 500 μm, c = 1 mm, d = 100 μm, e-l = 20 μm.

 

References

Jaklitsch WM, Gardiennet A, Voglmayr H. 2016b – Resolution of morphology-based taxonomic delusions: Acrocordiella, Basiseptospora, Blogiascospora, Clypeosphaeria, Hymenopleella, Lepteutypa, Pseudapiospora, Requienella, Seiridium and Strickeria. Persoonia 37, 82–105.

Jeewon R, Cai L, Liew ECY, Zhang KQ et al. 2003a – Dyrithiopsis lakefuxianensis gen. et sp. nov. from Fuxian Lake, Yunnan, China, and notes on the taxonomic confusion surrounding Dyrithium. Mycologia 95, 911–920.

Maharachchikumbura SSN, Hyde KD, Groenewald JZ, Xu J et al. 2014b – Pestalotiopsis revisited. Studies in Mycology 79, 121–186.

Nees CGD. 1816 – Das system der Pilze und Schwämme. Würzburg, Germany.

Senanayake IC, Maharachchikumbura SSN, Hyde KD, Bhat JD et al. 2015 – Towards unraveling relationships in Xylariomycetidae (Sordariomycetes). Fungal Diversity 73, 73–144.

Tsopelas P, Barnes I, Wingfield MJ, Xenopoulos S. 2007 – Seiridium cardinale on Juniperus species in Greece. Forest Pathology 37, 338–347.

 

Entry by

Kevin David Hyde, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, P.R. China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai 50150, Thailand, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, P.R. China, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand, World Agroforestry Centre, East and Central Asia, Kunming 650201, Yunnan, P.R. China

 

Published online 11 March 2026

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