Pleosporales - CBS - KNAW

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Fungal Diversity Notes Morphology Lineolata was monotypified by L. rhizophorae, whichwas originally introduced by Kohlmeyer and Kohlmeyer (1966)asa species of Didymosphaeria (as D. rhizophorae).Basedonthe morphology of ascomata and asci, Barr (1990a) assignedit under Lojkania (as L. rhizophorae). Kohlmeyer and Volkmann- Kohlmeyer (1990) restudied this species and noticed that the absence of clypeus, almost superficial ascomata, coloured peridium, a hamathecium with gelatinous matrix, asci with apical ring-like structure and the ornamented ascospores are quite different from the modified concept of Didymosphaeria. Thus they introduced Lineolata to accommodate D. rhizophorae (Kohlmeyer and Volkmann-Kohlmeyer 1990). Phylogenetic study Three isolates of Lineolata rhizophorae from varied geographic localities were analyzed by Suetrong et al. (2009)andshowntobe related to Caryosporella rhizophorae in Dothideomycetidae and excluded from Pleosporomycetidae and Pleosporales. Concluding remarks Based on initial molecular work it is likely that this species does not belong to Pleosporales in spite of its dense pseudoparaphyses and other characters shared with the order. Fig. 48 Lineolata rhizophorae (from Herb. J. Kolmeyer No. 2390b, isotype of Didymosphaeria rhizophorae). a Ascomata immersed in the host substrate with protruding papilla. b Ascospores within an ascus. Note the ascospore arrangement. c–f One-septate ascospores. Note the striate ornamentation in (c). Scale bars: a=100 μm, a, b=20 μm, c–f= 10 μm
Fungal Diversity Loculohypoxylon M.E. Barr, Mycotaxon 3: 326 (1976). (Teichosporaceae) Generic description Habitat terrestrial, saprobic. Ascomata relatively small, gregarious, immersed to erumpent, globose or subglobose, forming under a clypeus, papillate, ostiolate. Peridium thin, a single layer comprising hyaline thinwalled cells of textura angularis or textura prismatica. Hamathecium of septate pseudoparaphyses. Asci (2–4-)8- spored, bitunicate, cylindrical to cylindro-clavate, with a short, furcate pedicel, and wide ocular chamber. Ascospores broadly elliptic to subglobose, often apiculate at both ends, pale to dark brown, aseptate, with a germ slit. Anamorphs reported for genus: none. Literature: von Arx and Müller 1975; Barr 1976. Type species Loculohypoxylon grandineum (Berk. & Rav.) Barr, Mycotaxon 3: 326 (1976). (Fig. 49) ≡ Diatrype grandinea Berk. & Rav., in Berkeley, Grevillea 4: 95 (1876). Ascomata 85–130 μm high×75–145 μm diam., gregarious, immersed to widely erumpent, globose or subglobose, under a reddish brown to black clypeus, papillate, ostiolate (Fig. 49a and b). Peridium 18–30 μm thick laterally, 1-layered, composed of hyaline thin-walled cells of textura angularis to prismatica, cells up to 5×9 μm diam., cell wall 0.5–1 μm thick, apex cells smaller and walls thicker (Fig. 49c). Hamathecium comprising 2–3 μm broad, septate pseudoparaphyses. Asci 70–90×10– 12.5 μm (x ¼ 76:5 10:9mm, n=10), (2–4-)8-spored, bitunicate, cylindrical to cylindro-clavate, with a short, furcate pedicel, up to 25 μm long, with a wide ocular chamber (Fig. 49f, g, and h). Ascospores 7.5–10×5–7 μm (x ¼ 8:3 5:9mm, n=10), uniseriate to partially overlapping at the upper part, broadly elliptic to subglobose, often apiculate at both ends, pale to dark brown, aseptate, with a germ slit (Fig. 49d and e). Anamorph: none reported. Material examined: USA, New Jersey, Newfield, on bark of Quercus coccinea, Sept. 1878, as Diatrype grandinea, Ellis N.A.F. 494 (NY, MASS); on Quercus sp. wood, Nov. 1893, as Anthostoma grandinea B. & Rav., Ellis & Everhart, N.A.F. 494 (NY); Newfield, Oct. 1881, as Diatrype grandinea (NY); Newfield, Jan. 1882, on Quercus coccinea, asDiatrype grandinea B. & Rav, Ex Herb Ellis (NY); Newfield, Nov. 1893, as Anthostoma grandinea, on bark of fallen trunks of Quercus coccinea (NY). Notes Morphology Loculohypoxylon grandineum is one of the rare pleosporalean species having aseptate ascospores. When emphasis is given to ascospore morphology, Semidelitschia (monotypified by S. agasmatica Cain & Luck-Allen) is the most comparable genus. The large ascomata and ascospores, the mucilaginous sheath surrounding the ascospores as well as the coprophilous habitat of S. agasmatica differ from L. grandineum greatly. Thus Loculohypoxylon was introduced as a new genus. Phylogenetic study None. Concluding remarks Aseptate ascospores are rare in Pleosporales, and the position of this fungus needs further verification. The familial status of Loculohypoxylon in Teichosporaceae is questionable, as it is simply based on the similarity of living habitat, ascomata and asci with Immotthia and Teichospora (Barr 2002). Lophionema Sacc., Syll. fung. (Abellini) 2: 717 (1883). (Pleosporales, genera incertae sedis) Generic description Habitat terrestrial, saprobic? Ascomata solitary, scattered or in small groups, immersed to erumpent, globose to subglobose, with a flattened base, wall black, papillate, ostiolate. Peridium comprising two types of cells which merge in the middle. Hamathecium of trabeculate pseudoparaphyses, septate, rarely anastomosing and branching. Asci 8-spored, bitunicate, fissitunicate unknown, clavate to cylindro-clavate, with a short and furcate pedicel and a small inconspicuous ocular chamber. Ascospores filliform, hyaline to pale yellow, multi-septate, slightly constricted at each septum. Anamorphs reported for genus: none. Literature: Barr1992b; ChestersandBell1970; Ellis and Everhart 1892; Höhnel 1909; Solheim 1949. Type species Lophionema vermisporum (Ellis) Sacc., Syll. fung. (Abellini) 2: 717 (1883). (Fig. 50) ≡ Lophiostoma vermispora Ellis, Bull. Torrey bot. Club 9: 19 (1882). Ascomata 320–430 μm high×280–350 μm diam., solitary, scattered or in small groups of 2–3, immersed to erumpent, globose to subglobose, black, papillate, ostiolate. Papilla 80–120 μm high, up to 150 μm broad, cylindrical to somewhat vertically flattened neck; mostly with a short
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Fungal Diversity DOI 10.1007/s13225
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Fungal Diversity Table 1 Major circ
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Fungal Diversity biocontrol agent o
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Fungal Diversity Fig. 2 Aigialus gr
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Fungal Diversity Ascorhombispora L.
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Fungal Diversity Fig. 8 Astrosphaer
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Fungal Diversity Fig. 9 Asymmetrico
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Fungal Diversity Notes Morphology B
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Fungal Diversity Fig. 14 Bimuria no
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Fungal Diversity Fig. 78 Pleophragm
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Fungal Diversity papillate, ostiola
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Fungal Diversity Williams 1963; Mal
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Fungal Diversity 1987b). Based on a
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Fungal Diversity Saccardo PA (1880)
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Pleosporales - CBS - KNAW

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