Fungalpedia – Note 2131, Phoma

 

Phoma. Sacc.

Citation when using this data: Hongsanan S et al. 2020 – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank

Classification: Didymellaceae, Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi

 

Notes – When Aveskamp et al. (2010) refined Didymellaceae, they included phomoid taxa that could not be placed in other sections or genera due to the lack or presence of typical sectional characters. They synonymised fifteen species under this genus. However, Chen et al. (2015) assigned characters of sexual morph (Atradidymella) of Phoma herbarum as the type species of this genus. Species belonging to this genus develop fusiform, one septate ascospores and oblong to cylindrical, ellipsoidal, sometimes fusiform aseptate conidia. There are 3292 records in Index Fungorum (2020) and 2818 associated records in Mycobank (2020). However, most of those names are synonymised under several other genera in Didymellaceae, some are assigned to different families and finally, there are only two species accepted under Phoma (Chen et al. 2015, 2017, Valenzuela-Lopez et al. 2018).

 

Type species: Phoma herbarum Westend., Bull. Acad. Roy. Sci. Belgique, Cl. Sci. 19: 118 (1852).

Other accepted species: Species Fungorum – search Phoma.

 

References

Aveskamp MM, de Gruyter J, Woudenberg JHC, Verkley GJM, Crous PW. 2010 – Highlights of the Didymellaceae: a polyphasic approach to characterise Phoma and related pleosporalean genera. Studies in Mycology 65, 1–60.

Chen Q, Hou LW, Duan WJ, Crous PW, Cai L. 2017 – Didymellaceae revisited. Studies in Mycology 87, 105–159.

Chen Q, Jiang JR, Zhang GZ, Cai L, Crous PW. 2015 – Resolving the Phoma enigma. Studies in Mycology 82, 137–217.

Valenzuela-Lopez N, Cano-Lira JF, Guarro J, Sutton DA et al. 2018 – Coelomycetous Dothideomycetes with emphasis on the families Cucurbitariaceae and Didymellaceae. Studies in Mycology 90, 1–69.

 

Entry by

Sinang Hongsanan, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Science and Oceanography, Shenzhen University, Shenzhen 518060, People’s Republic of China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50002, Thailand

 

Published online 8 April 2026

Back to Glossary Index Page