Fungalpedia – Note 1397, Theissenia

 

Theissenia. Maubl.

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

Index Fungorum, Facesoffungi, MycoBank, GenBank

Classification: Hypoxylaceae, Xylariales, Xylariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi

Notes – Theissenia has a conspicuous central bulge or umbo in the perithecium and early dissolving asci. Ju et al. (2007) accepted the genus in Xylariaceae based on its nodulisporium-like asexual morph and act and tub2 phylogeny. Læssøe et al. (2013) accepted it in Graphostromataceae because of its nodulisporium-like asexual morph and close relationship to Biscogniauxia. Daranagama et al. (2018) and Wendt et al. (2018) accepted the genus in Xylariales genera incertae sedis. A recent study by De Long et al. (2019) placed the genus in Hypoxylaceae. 

Type species: Theissenia pyrenocrata.

Other accepted species: Species Fungorum – search Theissenia.

 

References

Daranagama DA, Hyde KD, Sir EB, Thambugala KM et al. 2018 – Towards a natural classification and backbone tree for Graphostromataceae, Hypoxylaceae, Lopadostomataceae and Xylariaceae. Fungal Diversity 88, 1–165.

De Long Q, Liu LL, Zhang X, Wen TC et al. 2019 – Contributions to species of Xylariales in China-1. Durotheca species. Mycological Progress 18, 495–510.

Ju YM, Hsieh HM, Ho MC, Szu DH, Fang MJ. 2007 – Theissenia rogersii sp. nov. and phylogenetic position of Theissenia. Mycologia 99, 612–662.

Læssøe T, Štěpánek V, Réblová M. 2013 – Molecular phylogeny of Boliniales (Sordariomycetes) with an assessment of the systematics of Apiorhynchostoma, Endoxyla and Pseudovalsaria. Mycologia 105, 564–588.

Wendt L, Sir EB, Kuhnert E, Heitkämper S et al. 2018 – Resurrection and emendation of the Hypoxylaceae, recognised from a multigene phylogeny of the Xylariales. Mycological Progress 17, 115–154.

 

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 28 February 2020

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