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Brunneocarpos Banksiae Fungal Planet Description Sheets 451

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Brunneocarpos Banksiae Fungal Planet Description Sheets 451 450 Persoonia – Volume 36, 2016 Brunneocarpos banksiae Fungal Planet description sheets 451 Fungal Planet 466 – 4 July 2016 Brunneocarpos Giraldo & Crous, gen. nov. Etymology. Brunneus (Latin) = brown, and carpos (Greek) = fruit. Ascospores uniseriate, ellipsoidal to slightly fusiform, clavate, Classification — Mycocaliciaceae, Mycocaliciales, Eurotio­ 1-celled, brown, smooth-walled. Mycelium consisting of sep- mycetes. tate, hyaline, smooth- and thin-walled hyphae. Asexual morph producing dictyochlamydospores in chains, subhyaline, thick- Ascomata apothecial, stipitate, growing intermingled among the walled, lateral or terminal. floral bracts on Banksia cones. Stipe straight or flexuous, mostly branched. Capitulum brown, globose to subglobose. Para­ Type species. Brunneocarpos banksiae Giraldo & Crous. MycoBank MB816972. physes not observed. Asci 8-spored, cylindrical, unitunicate. Brunneocarpos banksiae Giraldo & Crous, sp. nov. Etymology. Name reflects the host genus Banksia, from which the species Notes — According to LSU and ITS analyses Brunneocar­ was isolated. pos banksiae belongs to Mycocaliciaceae (Mycocaliciales) Ascomata apothecial, stipitate, growing intermingled among where four genera are currently accepted; Chaenothecopsis, the floral bracts on Banksia attenuata cones. Stipe dark brown, Phaeocalicium, Mycocalicium and Stenocybe. All produce apo- shiny, flexuous, mostly branched two or three times at the apex, thecioid ascomata, usually with a tiny stalk and brown as- 1–2 mm long, 50–85 µm wide. Capitulum dark brown, globose cospores (Tuovila et al. 2011). These genera harbour resi- to subglobose with a funnel-shaped base, covered by hyaline niculous species, growing directly on exudate and/or on exu- mycelium when older, 150–285 × 125–206 µm. Paraphyses date-impregnated wood of different hosts, including Acer (Sapin­ not observed. Asci 8-spored, cylindrical, unitunicate, 30–34 × daceae), Mangifera (Anacardiaceae), Khaya (Meliaceae), Abies 4–5 µm. Ascospores uniseriate, ellipsoidal to slightly fusiform, (Pinaceae), Picea, Tsuga and Tilia (Malvaceae) (Rikkinen 2003, clavate, 1-celled, brown, thick- and smooth-walled, 4.5–7 × Tuovila et al. 2011) and known species are lignicolous, algicol- 2–3.5 µm. Mycelium consisting of septate, hyaline, smooth- and ous or lichenicolous (Tuovila et al. 2014). So far no species thin-walled hyphae, 1.5–2 µm diam. Conidiophores absent or from these genera have been reported growing on Banksia, poorly differentiated. Dictyochlamydospores in chains, sessile Species growing in axenic culture produce a phialophora-like or with short subconical stalk, subhyaline to pale brown, thick- (Chaenothecopsis shefflerae) or coelomycetous asexual morph and smooth-walled, lateral or terminal, 26–60 µm long. (Tibell 1991, Tibell & Vinuesa 2005), and in some cases, a Culture characteristics — Colonies on MEA reaching 3–3.3 hyphomycetous asexual morph with ramoconidia in acropetal cm diam after 2 mo at 25 °C, vinaceous buff (Rayner 1970), chains (C. haematopus) (Tibell & Constantinescu 1991). This depressed at centre, floccose. morphological character differs from the new taxon proposed here, which produces a chlamydospore-like asexual morph Typus. AUSTRALIA, Western Australia, S34°22'19.4" E118°1'33.6", on in culture. Banksia attenuata (Proteaceae), 23 Sept. 2015, P.W. Crous (holotype CBS H-22633, cultures ex-type CPC 29841 = CBS 141465, ITS sequence GenBank KX262670, LSU sequence GenBank KX228352.1, MycoBank MB816973); CPC 29070, CPC 29072, CPC 29435. Colour illustrations. Australia, Western Australia, cones of Banksia at­ tenuata (photo: P.W. Crous); stipitated apothecium, detail of the capitulum, asci, ascospores, dictyochlamydospore. Scale bar = 10 µm. Alejandra Giraldo & Pedro W. Crous, CBS-KNAW Fungal Biodiversity Centre, P.O. Box 85167, 3508 AD Utrecht, The Netherlands; e-mail: [email protected] & [email protected] Michael J. Wingfield, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0002, South Africa; e-mail: [email protected] Treena I. Burgess & Giles E.St.J. Hardy, Centre for Phytophthora Science and Management, Murdoch University, 90 South Street, Murdoch, WA 6150, Australia; e-mail: [email protected] & [email protected] © 2016 Naturalis Biodiversity Center & Centraalbureau voor Schimmelcultures.
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