Eopyrenula leucoplaca
Eopyrenula leucoplaca (Wallr.) R.C. Harris, Michigan Bot. 12(1): 19 (1973).
≡ Verrucaria leucoplaca Wallr., Fl. crypt. Germ. (Norimbergae) 1: 299 (1831).
Index Fungorum number: IF 341935; Facesoffungi number: FoF 04633 , Fig. 1
Description:
Lichenicolous or with a lichenized thallus. Sexual morph: Ascomata 485–500 µm diam. × 465–550 µm high, perithecioid, with a central ostiole, lacking setae, dark brown to black, semi-immersed to superficial, subglobose to obpyriform, solitary, sometimes clustered, scattered over the host thallus or apothecia, carbonaceous. Peridium 45–60 µm thick-walled, composed of several layers of dark brown cells of textura epidermoidea. Hamathecium 0.9–2.7 µm of numerous, branched and anastomosing, cellular pseudoparaphyses. Asci 145–185 µm × 12–15 µm (x̅ = 164.8 × 14.2 µm, n = 10), 8-spored, bitunicate, elongate clavate to short-cylindrical, short-pedicellate, apically rounded, with well-developed ocular chamber. Ascospores 17–25 µm × 7–9 µm (x̅ = 20.2 × 8.1 µm, n = 10), overlapping 1–2-seriate, phragmosporous, brown to dark brown, paler at the end cells, ellipsoidal to fusiform, 3-septate, often constricted at the septa, smooth to rough-walled. Asexual morph: Unknown.
Material examined: Italy, Verona Province, on decorticated wood, Massalongo (M0205357, syntype).
Fig. 1. Eopyrenula leucoplaca (M0205357, syntype). a–d. Herbarium material. e. Section through ascoma. f. Peridium. g. Cellular pseudoparaphyses. h–l. Asci. m–r. Ascospores. Scale bars: c–e = 200 μm, f, h–l = 50 μm, g = 10 μm, m–r = 20 μm.
Importance and distribution
Eopyrenula comprises six lichenized species known on bark of stems of Corylus avellana (Betulaceae), Alnus (Betulaceae), Pinus (Pinaceae), trunk of Populus tremula (Salicaceae) and corticolous lichen on bark. Eopyrenula is distributed in North America (Canada), Europe (Norway, Sweden) and The United States (United Kingdom, Iowa).
References
Aptroot A. 2012 – A world key to the species of Anthracothecium and Pyrenula. The Lichenologist 44, 5–53.
Doilom M, Hyde KD, Phookamsak R, Dai DQ et al. 2018 – Mycosphere Notes 225–274: types and other specimens of some genera of Ascomycota. Mycosphere 9, 647–754.
Ertz D, Diederich P, Lawrey JD, Berger F et al. 2015 – Phylogenetic insights resolve Dacampiaceae (Pleosporales) as polyphyletic: Didymocyrtis (Pleosporales, Phaeosphaeriaceae) with Phoma-like anamorphs resurrected and segregated form Polycoccum (Trypetheliales, Polycoccaceae fam. nov.). Fungal Diversity 74, 53–89.
Harris RC. 1975 – A taxonomic revision of the genus Arthopyrenia Massal. s. lat. (Ascomycetes) in North America. Ph.D. Thesis, Michigan State University, USA 288.
Hyde KD, Jones EBG, Liu JK, Ariyawansa H et al. 2013 – Families of Dothideomycetes. Fungal Diversity 63, 1–313.
Jaklitsch WM, Voglmayr H. 2016 – Hidden diversity in Thyridaria and a new circumscription of the Thyridariaceae. Studies in Mycology 85, 35–64.
Lücking R, Hodkinson BP, Leavitt SD. 2017 – The 2016 classification of lichenized fungi in the Ascomycota and Basidiomycota-approaching one thousand genera. Bryologist 119, 361–416.
Lumbsch HT, Huhndorf SM. 2010 – Outline of Ascomycota 2009. Myconet 14, 1–64.
Wijayawardene NN, Crous PW, Kirk PM, Hawksworth DL et al. 2014 – Naming and outline of Dothideomycetes–2014 including proposals for the protection or suppression of generic names. Fungal Diversity 69, 1–55.
Wijayawardene NN, Hyde KD, Lumbsch HT, Liu JK et al. 2018 – Outline of Ascomycota: 2017. Fungal Diversity 88, 167–263.
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