Fungalpedia – Note 1947, Pseudomelanconidaceae

 

Pseudomelanconidaceae C.M. Tian & X.L. Fan

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

Index Fungorum, Facesoffungi, MycoBank, GenBank.

Classification: Diaporthales, Diaporthomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi

Pathogenic forming cankers on trees. Sexual morph: Undetermined. Asexual morph: Coelomycetous, melanconium-like. Conidiophores acervular, hyaline to pale brown, aseptate, unbranched, cylindrical, smooth-walled. Conidiogenous cells annellidic, occasionally with distinct annellations and collarettes. Conidia hyaline to greyish sepia to olivaceous as it matures, ellipsoid to oblong, multiguttulate, aseptate, with distinct hyaline sheath, becoming inconspicuous when mature. Conidial wall smooth (adapted from Fan et al. 2018).

Notes: Pseudomelanconidaceae shares similar characteristics to other families in Diaporthales having acervular conidiomata covered by a pustulate conidial mass on the bark surface, similar to Juglanconidaceae, Melanconiellaceae and Melanconidaceae (Fan et al. 2016, Voglmayr et al. 2017). However DNA sequence data confirmed them to represent a distinct phylogenetic lineage. Molecular investigations have revealed a remarkably high diversity of corticolous melanconium-like fungi in Diaporthales (Fan et al. 2016, Voglmayr et al. 2012, 2017), thus Fan et al. (2018) intrduced Pseudomelanconidaceae. In phylogenetic analysis of ITS, LSU, rpb2 and tef1 sequence data in Fan et al. (2018), Pseudomelanconis forms a distinct clade sister to Melanconiellaceae (Senanayake et al. 2018). Jiang et al. (2018) introduced a new genus Neopseudomelanconis in Pseudomelanconidaceae from dead branches of Castanea mollissima in China.

Type genus: Pseudomelanconis C.M. Tian & X.L. Fan

 

References

Fan XL, Du Z, Liang YM, Tian CM. 2016 – Melanconis (Melanconidaceae) associated with Betula spp. in China. Mycological Progress 15, 40.

Fan XL, Bezerra JDP, Tian CM, Crous PW. 2018 – Families and genera of diaporthalean fungi associated with canker and dieback of tree hosts. Persoonia 40, 119–134.

Jiang HB, Phookamsak R, Bhat DJ, Khan S et al. 2018 – Vamsapriya yunnana, a new species of Vamsapriya (Xylariaceae, Xylariales) associated with bamboo from Yunnan, China. Phytotaxa 356, 61–70.

Senanayake IC, Jeewon R, Chomnunti P, Wanasinghe DN et al. 2018 – Taxonomic circumscription of Diaporthales based on multigene phylogeny and morphology. Fungal Diversity 93, 241– 443.

Voglmayr H, Rossman AY, Castlebury LA, Jaklitsch WM. 2012– Multigene phylogeny and taxonomy of the genus Melanconiella (Diaporthales). Fungal Diversity 57, 1–44.

Voglmayr H, Castlebury LA, Jaklitsch WM. 2017 – Juglanconis gen. nov. on Juglandaceae, and the new family Juglanconidaceae (Diaporthales). Persoonia 38, 136–155.

 

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 6 March 2026

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