Jahnula aquatica
Jahnula aquatica (Kirschst.) Kirschst., Annls mycol. 34(3): 196 (1936).
≡ Melanopsamma aquatica Kirschst., Krypt. -Fl. Brandenburg (Leipzig) 7(2): 226 (1911).
Index Fungorum number: IF 257114; Facesoffungi number: FoF 11930, Fig. 1
Description: see Hyde et al. (2013); Suetrong et al. (2011); Huang et al. (2018).
Material considered: see Hyde et al. (2013); Suetrong et al. (2011); Huang et al. (2018).
Fig. 1 Jahnula spp. (a–i J. dianchia HKAS 92632). a Appearance of ascomata on host substrate. b Section through ascomata. c Peridium. d Pseudoparaphyses. e, f Asci. g–i Ascospores. (j–m J. seychellensis BCC SS1532) j Ascomata on host substrate. k Section through ascomata. l, m Asci. n–p Ascospores. Scale bars: b, k = 100 μm, c, e, f = 50 μm, d = 15 μm, l, m, g–i = 20 μm, n–p = 10 μm.
Importance and distribution
There are 20 Jahnula epithets in Index Fungorum (2022), but five species have been transferred to Aliquandostipite, Ascagilis, Neojahnula and Pseudojahnula. Jahnula comprises 15 species known on wide range of plant such as decorticated submerged wood, Eleiodoxa conferta (Arecaceae), Licuala longicalycata (Arecaceae), Machilus velutina (Lauraceae), Pinus sp. (Pinaceae) and Salix sp. (Salicaceae). Jahnula is reported from Africa (KwaZulu-Natal, Mauritius, Seychelles), Asia (China, Hong Kong), Australia (Queensland), Europe (Germany, Martinique Island) and The United States (Florida, Illinois).
References
Campbell J, Ferrer A, Raja HA, Sivichai S, Shearer CA. 2007 – Phylogenetic relationships among taxa in the Jahnulales inferred from 18S and 28S nuclear ribosomal DNA sequences. Canadian Journal of Botany 85, 873–882.
Huang SK, Maharachchikumbura SSN, Jeewon R, Bhat DJ, Chomnunti P, Hyde KD, Lumyong S. 2018 – Morphological and molecular taxonomy of Jahnula dianchia sp. nov. (Jahnulales) from submerged wood in Dianchi Lake. Yunnan China. Mycological Progress 17, 547–555.
Hyde KD, Jones EBG, Liu JK, Ariyawansa H et al. 2013 – Families of Dothideomycetes. Fungal Diversity 63, 1–313.
McNeill J, Turland NJ, Monro AM, Lepschi BJ. 2011 – XVIII International Botanical Congress: preliminary mail vote and report of Congress action on nomenclature proposals. Taxon 60,1507– 1520.
Sivichai S, Sri-Indrasutdhi V, Jones EBG. 2011 – Jahnula aquatica and its anamorph Xylomyces chlamydosporus on submerged wood in Thailand. Mycotaxon 116,137–142.
Suetrong S, Boonyuen N, Pang KL, Ueapattanakit J, Klaysuban A, Sri-indrasutdhi V, Sivichai S, Jones EBG. 2011– A taxonomic revision and phylogenetic reconstruction of the Jahnulales (Dothideomycetes), and the new family Manglicolaceae. Fungal Diversity 51, 163–188.
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