The genus Cladosporium and similar dematiaceous ... - CBS - KNAW

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Crous et al. Fig. 5. Verrucocladosporium dirinae (type material). A. Colonies on MEA. B–C. Conidial chains. D–H. Ramoconidia and conidia. Scale bars = 10 µm. Capnodiales, Teratosphaeriaceae Devriesia americana Crous & Dugan, sp. nov. MycoBank MB504434. Fig. 6. Etymology: Named after the geographic location of its type strain, New York, U.S.A. Differt a D. shelburniensi conidiophoris brevioribus (ad 30 µm longis), leviter latioribus (2–3 µm), ramoconidiis saepe nullis et conidiis 0–1-septatis. Mycelium consisting of branched, septate, 1.5–3 µm wide hyphae, irregular in width, predominantly guttulate, smooth, forming hyphal strands and hyphal coils; hyphae frequently forming dark brown, thick-walled, intercalary, muriformly septate chlamydospores on PDA in culture. Conidiophores subcylindrical, medium brown, straight to irregularly curved, up to 7-septate and 30 µm tall, 2–3 µm wide, or reduced to conidiogenous cells. Conidiogenous cells terminal or lateral on hyphae, 5–12 × 2–3 µm, medium brown, smooth, guttulate, subcylindrical, mono- to polyblastic; scars somewhat darkened and thickened, but not refractive. Conidia medium brown, guttulate, smooth, in mostly unbranched chains, subcylindrical to narrowly ellipsoidal, tapering towards subtruncate ends, 0–1-septate, (7–)8–12(–16) × 2(–2.5) µm; hila darkened, somewhat thickened, not refractive, 1–1.5 µm wide. 42
Cladosporium and morphologically similar genera Fig. 6. Devriesia americana (type material). A–B. Chlamydospore-like structures formed in culture. C–F. Conidiophores giving rise to conidial chains. G–H. Conidia. Scale bars = 10 µm Cultural characteristics: Colonies erumpent, with sparse aerial mycelium on PDA, and smooth, uneven, wide margins, submerged under the agar surface; greenish-black (surface); reverse olivaceous-black; on OA iron-grey (surface). Colonies reaching 8–15 mm diam on PDA after 14 d at 25 °C in the dark; colonies fertile, but sporulation sparse. Specimen examined: U.S.A., New York, Long Island, isolated from air, F.M. Dugan, holotype CBS-H 19894, culture ex-type CBS 117726 = ATCC 96545 = CPC 5121. Notes: Until recently, this species was treated as part of the “Phaeoramularia” hachijoensis species complex (Braun et al. 2003). The present strain has conidia that are smaller than those of “Phaeoramularia” hachijoensis, which has ramoconidia that are 1–3-septate, up to 30 µm long, and conidia that are predominantly 1-septate, 10–21 × 2–4 µm (Matsushima 1975). From the illustration provided by Matsushima, it appears that “Phaeoramularia” hachijoensis is indeed a species of Pseudocladosporium U. Braun, a finding which is in agreement with the name Pseudocladosporium hachijoense (Matsush.) U. Braun proposed by Braun (1998). Devriesia americana is both morphologically and phylogenetically more allied to Teratosphaeria Syd. & P. Syd. than Venturia Sacc. Based on its pigmented conidiophores and catenulate conidia, and scars that are somewhat darkened and thickened, and the formation of chlamydospores in culture, it is allocated to Devriesia Seifert & N.L. Nick. Species of the genus Devriesia are ecologically different, however (Seifert et al. 2004), being soil-borne www.studiesinmycology.org and thermotolerant. It is possible, therefore, that further collections of this fungus may eventually indicate that it needs to be placed in a distinct genus within the Teratosphaeriaceae. Devriesia americana is the second species of Devriesia with muriform chlamydospores, beside D. shelburniensis N.L. Nick. & Seifert, but the latter species is easily distinguishable by its long and narrow conidiophores (ca 100–200 × 1.5–2.5 µm) and abundant ramoconidia, up to 25.5 µm long, with 0–3 septa. Furthermore, D. shelburniensis is a thermotolerant soil-borne hyphomycete. Stenella araguata Syd., Ann. Mycol. 28(1/2): 205. 1930. Figs 7–8. ≡ Cladosporium araguatum (Syd.) Arx, Genera of Fungi Sporulating in pure Culture, Edn 2 (Vaduz): 224. 1974. = Cladosporium castellanii Borelli & Marcano, Castellania 1: 154. 1973. Leaf spots hypophyllous, irregular to subcircular, up to 8 mm diam, indistinct, yellow to pale brown with indistinct margins on IMI 15728(a); on IMI 34905 (Fig. 7) lesions are amphigenous, and fascicles and sporodochia are rare, with superficial mycelium being predominant. Mycelium consisting of internal and external, medium brown, septate, branched, verruculose, 3–4 µm wide hyphae. Caespituli fasciculate to sporodochial, hypophyllous, medium brown, up to 120 µm wide and 60 µm high. Conidiophores arising singly from superficial mycelium, or aggregated in loose to dense fascicles arising from the upper cells of a brown stroma up to 70 µm wide and 30 µm high; conidiophores medium brown, finely verruculose, 1–5- septate, subcylindrical, straight to geniculate-sinuous, unbranched 43
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Studies in Mycology 58 (2007) The g
Page 4 and 5: Studies in Mycology The Studies in
Page 7 and 8: CONTENTS P.W. Crous, U. Braun and J
Page 9 and 10: lectotype for the genus by Clements
Page 11: Schubert K (2005a). Morphotaxonomic
Page 14 and 15: Crous et al. Table 1. Isolates for
Page 16 and 17: Crous et al. Table 1. (Continued).
Page 18 and 19: Crous et al. 100 10 changes 65 100
Page 20 and 21: Crous et al. Treatment of phylogene
Page 22 and 23: Crous et al. Teratosphaeria bellula
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Page 70 and 71: Arzanlou et al. To date 26 species
Page 72 and 73: Arzanlou et al. Table 1. (Continued
Page 74 and 75: Arzanlou et al. 10 changes Athelia
Page 76 and 77: Arzanlou et al. Athelia epiphylla A
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Arzanlou et al. even further, thoug
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available online at www.studiesinmy
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Dichocladosporium gen. nov. 10 chan
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Dichocladosporium gen. nov. Fig. 3.
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Dichocladosporium gen. nov. to intr
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Dichocladosporium gen. nov. Czechos
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Cladosporium herbarum species compl
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Cladosporium sphaerospermum species
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Crous et al. The aim of the present
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Crous et al. 10 changes Athelia epi
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Crous et al. Table 1. Isolates used
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Crous et al. Table 1. (Continued).
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Crous et al. 0.1 expected changes p
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Crous et al. Fig. 6. Cladophialopho
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Crous et al. Fig. 11. Cladophialoph
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Crous et al. Fig. 13. Cladophialoph
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Crous et al. Fig. 15. Exophiala sp.
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Crous et al. Fig. 18. Cylindrosympo
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Crous et al. Fig. 19. Fusicladium a
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Crous et al. Fig. 22. Fusicladium f
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Crous et al. Fig. 24. Fusicladium p
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Crous et al. Fusicladium rhodense C
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Crous et al. Excluded taxa Polyscyt
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Crous et al. the conidial tips are
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Cladophialophora carrionii complex
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Hormoconis resinae and morphologica
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Fig. 6 Hormoconis resinae and morph
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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
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The genus Cladosporium and similar dematiaceous ... - CBS - KNAW

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