Fungalpedia – Note 2480, Berkleasmium

 

Berkleasmium Zobel

Citation when using this data: Dong W et al. 2020 – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank.

Classification: Incertae sedis, Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi

Berkleasmium is characterized by superficial ascomata seated on a subiculum, with multi-celled setae covering the whole ascomata, fusiform, multi-septate ascospores, and dictyoconidia or helicoid conidia (Lu et al. 2018b). The type species B. concinnum was linked to the asexual morph of Neoacanthostigma septoconstrictum (Promp. & A.N. Mill.) Boonmee & K.D. Hyde, based on phylogenetic evidence and co-occurrence of ascomata of N. septoconstrictum and sporodochia of B. concinnum (Tanney and Miller 2017). Berkleasmium comprises over 45 epithets in Index Fungorum (2020). However, Lu et al. (2018b) accepted six species based on phylogenetic evidence and their similar sexual morph features. Five species were reported from freshwater habitats and four of them were transferred from Neoacanthostigma Boonmee et al. The sexual morph of B. aquaticum (Y.Z. Lu et al.) Y.Z. Lu has the typical ascomata of Berkleasmium (Lu et al. 2017b).

Type species: Berkleasmium concinnum (Berk.) S. Hughes

Other accepted species: Species Fungorum – search Berkleasmium.

 

image

 

Figure 1 – Berkleasmium latisporum (MFLU 15-2686). a Colonies on submerged wood. b–e Conidia. f–i Conidial filament. j Germinated conidium. k, l Colony on PDA (up-front, down-reverse). Scale bars: a = 100 μm, b = 20 μm, c–e = 40 μm, f = 5 μm, g = 2 μm, h, i = 10 μm, j = 50 μm.

 

References

Lu YZ, Boonmee S, Liu JK, Hyde KD, Bhat DJ, Eungwanichayapant PD, Kang JC 2017b – Novel Neoacanthostigma species from aquatic habitats. Cryptogam Mycol 38:169–191.

Lu YZ, Liu JK, Hyde KD, Jeewon R, Kang JC, Fan C, Boonmee S, Bhat DJ, Luo ZL, Lin CG, Eungwanichayapant PD 2018b – A taxonomic reassessment of Tubeufiales based on multi-locus phylogeny and morphology. Fungal Divers 92:131–344.

Tanney J, Miller AN 2017 – Asexual-sexual morph connection in the type species of Berkleasmium. IMA fungus 8:99–105.

 

Entry by

Wei Dong, Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, China

 

Published online 22 May 2026

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