Fungalpedia – Note 1960, Requienella
Requienella Fabre
Citation when using this data: Hyde KD et al. 2020 – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1
Classification: Requienellaceae, Pyrenulales, Chaetothyriomycetidae, Eurotiomycetes, Pezizomycotina, Ascomycota, Fungi
Requienella was introduced by Fabre (1883), however, it has been shown that the three species recognised by him in Requienella belonged to other genera. Boise (1986) reinstated Requienella by typifying the genus with R. seminuda (= Sphaeria seminuda). Based on morphology, the genus was been classified in Dothideomycetes, however, Jaklitsch et al. (2016b) showed the genus belongs to the class Sordariomycetes, despite its apparently fissitunicate asci. Requienella fraxini and R. seminuda are accepted in Requienella based on morphology and sequence data and R. princeps has been transferred to Decaisnella (Barr 1990a).
Type species: Requienella seminuda (Pers.) Boise.
Other accepted species: Species Fungorum – search Requienella.
Figure 1 – Requienella seminuda (a, b, d, e, h, i, j), Requienella fraxini (c, k, l), Acrocordiella occulta (j, m, n) redrawn from Jaklitsch et al. (2016b). a Ascomata. b, c Sections of ascomata. d, e Asci and paraphyses. e Apical region of asci. f-k Ascospores. Scale bars: a = 0.2 mm, b = 0.2 mm, c = 0.3 mm, d = 25 µm, d, f = 15 µm, e, k, l, n = 10 µm, i, j, m = 7 µm.
References
Boise J. 1986 – Requienellaceae, a New Family of Loculoascomycetes. Mycologia 78, 37–41.
Fabre JH. 1883 – Essai sur les Sphériacées du Départment de Vaucluse II. Annales des Sciences Naturelles Botanique. ser 6 15, 31–69.
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