<strong>Cladosporium</strong> sphaerospermum species complex <strong>Cladosporium</strong> psychrotolerans Zalar, de Hoog & Gunde- Cimerman, sp. nov. MycoBank MB492428. Fig. 10. Etymology: Refers to its ability to grow at low temperatures. Mycelium partim submersum; hyphae vagina polysaccharidica carentes. Conidiophora erecta vel adscendentia; stipes (10–)50–100(–150) × (3–)3.5–4(–7.5) μm, olivaceo-brunneus, levis, crassitunicatus, compluries regulariter septatus (cellulis 10–40 μm longis), identidem dichotome ramosus. Conidiorum catenae undique divergentes, terminales partes simplices ad 4 conidia continentes. Cellulae conidiogenae indistinctae. Ramoconidia primaria cylindrica, (18–)19–22(–43) × (2.5)3–3.5(–4.5) µm, 0(–1)-septata. Conidia leves vel leniter verruculosa, dilute brunnea, unicellularia, globosa vel ovoidea, (2.5–)3–4(–4.5) × (2–)2.5–3(–3) μm, long.: lat. 1.3–1.4; ramoconidia secundaria cylindrica, 0–1(–2)-septata, (5–)8–16(– 36) × (2–)2.5–3(–5) μm, ad 4 cicatrices terminales ferentia; cicatrices inspissatae, conspicuae, 0.5–2 μm diam. Mycelium partly superficial partly submerged; hyphae without extracellular polysaccharide-like material. Conidiophores erect or ascending, macronematous, stipes (10–)50–100(–150) × (3–)3.5– 4(–7.5) μm, olivaceous-brown, smooth or almost so, thick-walled, regularly septate (cell length 10–40 μm), arising laterally from aerial hyphae, repeatedly dichotomously branched. Conidial chains branching in all directions, up to 4 conidia in the unbranched parts. Ramoconidia sometimes formed, cylindrical, (18–)19–22(–43) × (2.5)3–3.5(–4.5) µm, aseptate, rarely 1-septate, with a broadly truncate base, up to 2 µm wide, unthickened or slightly thickened, somewhat darkened-refractive. Conidia smooth to minutely verruculose, light brown, non-septate, spherical to ovoid, length : width ratio = 1.3–1.4; conidial size (2.5–)3–4(–4.5) × (2–)2.5–3(–3) μm [av. (± SD) 3.4 (± 0.5) × 2.5 (± 0.2)]; secondary ramoconidia cylindrical, 0–1(–2)-septate, (5–)8–16(–36) × (2–)2.5–3(–5) μm [av. (± SD) 12.7 (± 6.5) × 3.0 (± 0.5)], with up to 4 distal scars. Conidiogenous scars thickened <strong>and</strong> conspicuous, protuberant, 0.5–2 μm diam. Cultural characteristics: Colonies on PDA reaching 13–18 mm diam, velvety, olive (3F4) due to profuse sporulation, flat with straight margin. Reverse dark green. Colonies on OA reaching 13– 15 mm diam, olive (2F8), of granular appearance due to profuse sporulation; aerial mycelium sparse. Margin regular. Reverse black. Colonies on MEA reaching 8–15 mm diam, olive (2F4), velvety, radially furrowed with undulate white margin. Colonies on MEA with 5 % NaCl growing faster than on other media, reaching 25–27 mm diam, olive (3E6) <strong>and</strong> granular due to profuse sporulation, either slightly furrowed or heavily wrinkled with regular or undulate margin. Reverse dark green. Maximum tolerated salt concentration: 17 % NaCl after 14 d. Cardinal temperatures: Minimum at 4 °C (5 mm diam), optimum <strong>and</strong> maximum at 25 °C (8–15 mm diam). Specimen examined: Slovenia, from hypersaline water of Sečovlje salterns, coll. <strong>and</strong> isol. S. Sonjak, May 1999, <strong>CBS</strong> H-19730, holotype, culture ex-type EXF-391 = <strong>CBS</strong> 119412. Habitats <strong>and</strong> distribution: Hypersaline water in the Mediterranean basin. Differential parameters: Growth at 4 °C; maximal NaCl concentration 17 % NaCl, which differentiates it from other species with <strong>similar</strong> conidia, like C. sphaerospermum, C. halotolerans <strong>and</strong> C. dominicanum. Strains examined: EXF-326, EXF-332, EXF-391 (= <strong>CBS</strong> 119412; ex-type strain), EXF-714. <strong>Cladosporium</strong> salinae Zalar, de Hoog & Gunde-Cimerman, sp. nov. MycoBank MB492438. Fig. 11. Etymology: Refers to salterns (= Latin salinae) as the habitat of this species. Mycelium partim submersum; hyphae multa rostra lateralia ferentes, hyphae vagina polysaccharidica involutae. Conidiophora vix distincta, lateralia vel terminalia ex hyphis aeriis oriunda; stipes longitudine variabili, (5–)25–50(–60) × (2–)2.5–3(–4) μm, olivaceo-brunneus, levis vel leniter verruculosus, crassitunicatus, irregulariter dense septatus (cellulis 6–29 μm longis), simplex, interdum ramosus. Conidiorum catenae undique divergentes, terminales ad 6 conidia continentes. Cellulae conidiogenae nonnumquam integratae, in summo sequentiam sympodialem denticulorum formantes. Conidia levia, interdum leniter verruculosa, dilute brunnea, unicellularia, plerumque fusiformia, (4.5–)5.5–7.5(–10) × (2–)2.5–3(–3.5) μm, long. : lat. 1.9–2.4; ramoconidia secundaria cylindrica, 0–1(–2)-septata, (7.5–)9.5– 13.5(–19) × (2.5–)2.5–3.5(–4.5) μm, ad 5 cicatrices terminales ferentia; cicatrices inspissatae, conspicuae, protuberantes, 0.7–1.8 μm diam. Mycelium partly superficial partly submerged, with numerous lateral pegs, consistently enveloped in polysaccharide-like material. Conidiophores poorly differentiated, micronematous, stipes (5–)25–50(–60) × (2–)2.5–3(–4) μm, olivaceous-brown, smooth to often minutely verruculose or irregularly rough-walled, thick-walled, irregularly densely septate (length of cells 6–29 μm), arising laterally <strong>and</strong> terminally from aerial hyphae, unbranched, occasionally branched. Conidial chains branching in all directions, terminal chains with up to 6 conidia. Conidiogenous cells sometimes integrated, producing sympodial clusters of pronounced denticles at their distal ends. Conidia usually smooth, occasionally minutely verruculose, light brown, aseptate, usually oblong ellipsoidal to fusiform, length : width ratio = 1.9–2.4; (4.5–)5.5–7.5(–10) × (2–) 2.5–3(–3.5) μm [av. (± SD) 6.7 (± 1.3) × 2.9 (± 0.4)]; secondary ramoconidia cylindrical, 0–1(–2)-septate, (7.5–)9.5–13.5(–19) × (2.5–)2.5–3.5(–4.5) μm [av. (± SD) 12.1 (± 3.3) × 3.2 (± 0.6)], with up to 5 distal scars. Conidiogenous scars thickened <strong>and</strong> conspicuous, protuberant, 0.7–1.8 μm diam. Cultural characteristics: Colonies on PDA reaching 10–27 mm diam, granular, olive (2E4) due to profuse sporulation, with white undulate margin. Aerial mycelium absent. Colonies either heaped or radially furrowed, in the marginal area growing deeply into the agar. Reverse dark brown to dark green. Colonies on OA reaching 7–20 mm diam, olive (3E6), of granular appearance due to profuse sporulation, aerial mycelium present. Margin either undulate or arachnoid, deeply furrowed. Reverse pale brown to dark green. Colonies on MEA reaching 8–19 mm diam, velvety, reseda-green (2E6), heaped. Margin furrowed, growing deeply into the agar. Colonies on MEA with 5 % NaCl growing much faster than on other media, reaching 25–38 mm diam, of different colours, mostly reseda-green (2E6) <strong>and</strong> granulate due to profuse sporulation, margin olive-yellow (2D6). Reverse yellow to dark green. Maximum tolerated salt concentration: MEA + 17 % NaCl after 14 d. Cardinal temperatures: No growth at 4 °C, optimum <strong>and</strong> maximum temperature at 25 °C (8–19 mm diam), no growth at 30 °C. Specimen examined: Slovenia, from hypersaline water of Sečovlje salterns, coll. <strong>and</strong> isol. S. Sonjak, Feb. 1999, <strong>CBS</strong> H-19731, holotype, culture ex-type EXF-335 = <strong>CBS</strong> 119413. Habitats <strong>and</strong> distribution: Hypersaline water in the Mediterranean basin. Differential parameters: Sympodial conidiogenous cells with pronounced denticles, narrow temperature amplitude. www.studiesinmycology.org 175
Zalar et al. Fig. 10. <strong>Cladosporium</strong> psychrotolerans. Macro- <strong>and</strong> micromorphological characters. A–D. Colony surface grown on PDA (A), OA (B), MEA (C) <strong>and</strong> MEA plus 5 % NaCl (D) of strains incubated for 14 d at 25 ºC in darkness. E–F. Conidiophores. G. Apical part of a conidiophore. H–I. Secondary ramoconidia <strong>and</strong> conidia. E–I. All from 7-d-old SNA slide cultures. All but C, from EXF-391 (ex-type strain); C, from EXF-714. Scale bars A–D = 10 mm, E = 100 µm, F = 50 µm, G–I = 10 µm. Strains examined: EXF-322, EXF-335 (= <strong>CBS</strong> 119413; ex-type strain), EXF-604. Notes: <strong>Cladosporium</strong> salinae morphologically resembles species of the <strong>genus</strong> Fusicladium because its conidia are oblong ellipsoidal to fusiform <strong>and</strong> conidiogenous loci of ramoconidia are placed closely together. As any other <strong>Cladosporium</strong> species, its conidia show typical cladosporioid scar structures, however. <strong>Cladosporium</strong> salinae seems to have a separate position within the <strong>genus</strong> <strong>Cladosporium</strong> since it seems to be distantly related to any other described <strong>Cladosporium</strong> species or currently known species complex within <strong>Cladosporium</strong>. 176
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Studies in Mycology 58 (2007) The g
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Studies in Mycology The Studies in
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CONTENTS P.W. Crous, U. Braun and J
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lectotype for the genus by Clements
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Schubert K (2005a). Morphotaxonomic
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Crous et al. Table 1. Isolates for
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Crous et al. Teratosphaeria bellula
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Crous et al. 6. Conidiophores short
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Crous et al. Fig. 7. Catenulostroma
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Crous et al. 100 61 100 52 100 10 c
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Arzanlou et al. To date 26 species
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Arzanlou et al. 10 changes Athelia
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Arzanlou et al. Athelia epiphylla A
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Dichocladosporium gen. nov. 10 chan
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Dichocladosporium gen. nov. Fig. 3.
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Cladosporium herbarum species compl
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Hormoconis resinae and morphologica
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Hormoconis resinae and morphologica
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Cladophialophora, 52 k , 54 k -55,
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Fusicladium phillyreae, 189 c , 191
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Ramichloridium epichloës, 60, 89 P
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Trimmatostroma salicis, 3 t , 5, 6