Fungalpedia – Note 2353, Brevicollum
Brevicollum. Kaz. Tanaka, A. Hashim. & Toy. Sato.
Citation when using this data: Hongsanan S et al. 2020 – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1
Classification: Neohendersoniaceae, Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
Notes – The sexual morphs of Brevicollum are characterized by immersed, globose to depressed globose ascomata, with a central to eccentric, short cylindrical ostiolar neck, a thin ascomatal wall, clavate asci with a shallow ocular chamber, and broadly fusiform, 3–5-septate ascospores. The asexual morph of the genus is unknown (Tanaka et al. 2017). Brevicollum is similar to Crassiparies in ascospore characteristics. However, Brevicollum has 8-spored asci, while Crassiparies has 4-spored asci. They are also phylogenetically apart (Hyde et al. 2018). Brevicollum hyalosporum occurs in various plant species as saprobes and endophytes, and is widely distributed in temperate and tropical regions (Tanaka et al. 2017). Brevicollum hyalosporum was identified as a saprobe on branches of Hevea brasiliensis Müll.Arg (Hyde et al. 2018) which is an economically important crop and also on dead twigs of Syzygium samarangense (Myrtaceae) in Japan and Thailand (Tanaka et al. 2017). This species is similar to Massarina palmicola (Massarinaceae) which also has 5-septate, hyaline ascospores with a slightly expanded sheath (Hyde & Aptroot 1997, Aptroot 1998).
Type species: Type species – Brevicollum hyalosporum Kaz. Tanaka & Toy. Sato, Mycologia 109: 611 (2017).
Other accepted species: Species Fungorum – search Brevicollum.
Figure 1 – Brevicollum hyalosporum (PUFNI 17628). a Ascomata on host twig. b, c Ascoma and neck. d Pseudoparaphyses. e–g Asci h, i Culture on media. j–o Ascospores. Scale bars: b = 200 μm, c, g = 50 μm, d, f = 20 μm, e, j–o = 10 μm.
References
Aptroot A. 1998 – A world revision of Massarina (Ascomycota). Nova Hedwigia 66, 89–162.
Hyde KD, Chaiwan N, Norphanphoun C et al. 2018 – Mycosphere notes 169–224. Mycosphere 9, 71–430.
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 17 April 2026