Fungalpedia – Note 949, Keissleriella
Keissleriella. Höhn.
Citation when using this data: Brahmanage RS et al. 2020 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank., Fig 1
Classification: Lentitheciaceae, Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
Höhnel (1919) introduced Keissleriella to accommodate K. aesculi (Höhn.) Höhn.
(≡ Pyrenochaeta aesculi Höhn.). This genus is characterized by ascomata with ostiolar necks filled with black setae, and one to multi-septate, hyaline to pale brown ascospores (Barr 1990, Liu et al. 2015, Wanasinghe et al. 2018b, Phookamsak et al. 2019). The asexual morph comprises unbranched or branched, smooth, flexuous, hyaline conidiophores, phialidic conidiogenous cells and hyaline to brown, aseptate or septate conidia (Hyde et al. 2020). Munk (1957) placed Keissleriella in Lophiostomataceae, and then von Arx & Muller (1975) included it in Pleosporaceae. Subsequently, Barr (1990) placed it in Melanommataceae, while Lumbsch & Huhndorf (2007) transferred Keissleriella in to Massarinaceae. Zhang et al. (2009) included the genus in Lentitheciaceae, and this is followed by many subsequent authors (Zhang et al. 2012, Hyde et al. 2013, Wijayawardene et al. 2014, Tanaka et al. 2015, Wanasinghe et al. 2017b, 2018b, Phookamsak et al. 2019, Hyde et al. 2020).
Type species: Keissleriella aesculi (Höhn.) Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 128(7-8): 582 (1919).
Other accepted species: Species Fungorum – search Keissleriella.
Figure 1 – Keissleriella italica (MFLU 20-0394, holotype). a Appearance of ascomata on host. b Close up of an ascoma. c Section through an ascoma. d Ostiolar region. e Peridium. f Pseudoparaphyses. g–j Asci. k, l Ascospores. Scale bars: c = 100 μm, g–j = 20 μm, d, e, f = 10 μm, k, l = 5 μm.
References
Barr ME. 1990 – Melanommatales (Loculoascomycetes). N Am Flora Ser II 13, 1–129.
Lumbsch HT, Huhndorf SM. 2007 – Outline of Ascomycota. Myconet 13, 1–99.
Munk A. 1957 – Danish Pyrenomycetes. Dan Bot Ark 17, 1–491.
Zhang Y, Crous PW, Schoch CL, Hyde KD. 2012 – Pleosporales. Fungal Diversity 53, 1–221.
Entry by
Rashika S. Brahmanage, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand, Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, People’s Republic of China, School of Science, Mae Fah Luang University, Chiang Rai, Chiang Rai, 57100, Thailand
Published online 29 September 2020