Pleosporales - CBS - KNAW

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Fungal Diversity immersed in host tissue, coriaceous, globose or subglobose, usually a somewhat thick, short papilla, up to 100 μm high, with a pore-like ostiole (Fig. 69a). Peridium 27–35 μm thick laterally, up to 55 μm thick at the apex, 1- layered, composed of small pigmented cells of textura angularis, cells up to 5×8 μm diam., cell wall 1.5–2 μm thick, apex cells smaller and walls thicker (Fig. 69b). Hamathecium of dense, long trabeculate pseudoparaphyses, 1–1.5 μm broad, anastomosing and branching between and above the asci. Asci 150–208×17.5–25 μm (x ¼ 182:5 22mm, n=10), 8-spored, bitunicate, fissitunicate, cylindrical to cylindro-clavate, with a narrowed, furcate, thin pedicel, 15–55 μm long, 2–3.5 μm broad, with a large truncate ocular chamber best seen in immature asci (to 4 μm wide×3 μm high) (Fig. 69e, f and g). Ascospores 55–72.5× 10–12 μm (x ¼ 63 10:4mm, n=10), 3–4 seriate to uniseriate near the base, cylindrical to clavate, with broadly to narrowly rounded ends, brown, 6–7 transversesepta,easily separating into partspores, with germ slits, central partspores of the ascospores shorter than broad, rectangular in vertical section, round in transverse section, 7–8×6–10 μm diam., apical cells usually longer than broad, 11–17.5×6–7 μm diam. (Fig. 69c and d). Anamorph: none reported. Material examined: USA, Albuquerque, Bernalillo Co., New Mexico, dry gravelly hill, on wood, 29 Nov. 1901, T. S.A. Cockerell (NY, holotype). Notes Morphology Ohleriella was formally established by Earle (1902) based on its “medium to large ascomata with a wide papilla, relatively wide peridium, cylindro-clavate asci, brown to deep brown multi-septate ascospore, with elongated germ slit on each cell”, and was monotypified by O. neomexicana (Barr 1990a). Ohleriella subsequently has been treated as a synonym of Ohleria, Sporormiella or Preussia (Ahmed and Cain 1972; vonArxandMüller1975; Clements and Shear 1931). Spororminula tenerifae, the generic type of Spororminula, was assigned to Ohleriella, thus Spororminula was treated as a synonym of Ohleriella (Barr 1990a). Two new species were introduced by Barr (1990a) from North America. Currently, three species are included in this genus, i.e. O. herculean (Ellis & Everh.) M.E. Barr, O. neomexicana and O. nudilignae M.E. Barr & Malloch (http://www.index fungorum.org; http://www.mycobank.org, 01/03/2009). The generic type, O. neomexicana, is morphologically similar to the coprophilous genus Sporormiella, but is saprobic on grass stems. Phylogenetic study None. Concluding remarks Although we maintain Ohleriella as a separate genus here, its saprobic habitat on grasses and similarity to the coprophilous Sporormiella may indicate a close evolutionary relationship, with the grass saprobic possibly being an early relative of the coprophilous Sporormiella. Alternatively, the species/genera may simply occupy different ecological niches (i.e. dead grass vs dead grass in dung). Molecular studies are needed to resolve this issue. Ophiobolus Reiss, Hedwigia 1:27 (1854). (Phaeosphaeriaceae) Generic description Habitat terrestrial, saprobic or hemibiotrophic. Ascomata medium-sized, solitary, scattered, or in groups, globose or pyriform, coriaceous, black, papillate, ostiolate, periphysate. Peridium thin, thicker near the apex, thinner at the base. Hamathecium of long cellular pseudoparaphyses, septate, anastomosing or branching not observed. Asci 8-spored, bitunicate, fissitunicate dehiscence not observed, cylindrical, with a short, furcate pedicel. Ascospores filamentous, narrower toward the lower end, pale brown, multiseptate, separating into two partspores from the middle septum, from the breaking point, the second cell of each partspore enlarged. Anamorphs reported for genus: Coniothyrium-like, Rhabdospora, Phoma-like and Scolecosporiella (Hyde et al. 2011; Shoemaker 1976; Sivanesan 1984). Literature: Holm 1948, 1957; Müller 1952; Reiss 1854; Shoemaker 1976; Sivanesan 1984. Type species Ophiobolus disseminans Reiss, Hedwigia 1:27 (1854) (Fig. 70). Ascomata 220–380 μm high×290–430 μm diam., solitary, scattered, or in groups often arranged in a row, immersed with a protruding papilla, globose, pyriform, coriaceous, black, periphysate. Papilla 40–90 μm high, with a pore-like ostiole (Fig. 70a and b). Peridium 40–55 μm wide at the sides, up to 70 μm thick at the apex, thinner at the base, comprising two cell types, outer layer composed of small heavily pigmented thick-walled cells of textura angularis, cells 2–5 μm diam., cell wall 2–3 μm thick, apex cells smaller and walls thicker, inner layer composed of lightly pigmented or hyaline thinwalled cells of textura angularis, 5–7 μm diam., wall 1.5– 2 μm thick, merging with pseudoparaphyses (Fig. 70c). Hamathecium of long cellular pseudoparaphyses, 2–3 μm broad, septate, anastomosing or branching not observed (Fig. 70e). Asci 150–195×8–12.5 μm (x ¼ 169:5 10:7mm,
Fungal Diversity Fig. 69 Ohleriella neomexicana (NY, holotype). a Ascoma scattering on the host surface. b Section of a partial peridium. Note the small cells of textura angularis. c Ascospore in ascus. d Ascospore breaking into part spores. Note the sigmoid germ slit. e Dehiscent ascus. f, g Asci with short pedicels. Scale bars: a=100 μm, b=50 μm, c–g= 10 μm
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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
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Fungal Diversity biocontrol agent o
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Fungal Diversity substrates and man
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Fungal Diversity 2. To investigate
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Fungal Diversity Table 3 (continued
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Fungal Diversity
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Fungal Diversity Fig. 2 Aigialus gr
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Fungal Diversity Fig. 3 Amniculicol
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Fungal Diversity Literature: Berkel
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Fungal Diversity Ascorhombispora L.
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Fungal Diversity
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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 Generic descriptio
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Fungal Diversity Anamorph: none rep
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Fungal Diversity Fig. 14 Bimuria no
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Fungal Diversity Fig. 15 Bricookea
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Fungal Diversity Fig. 16 Byssolophi
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Fungal Diversity Notes Morphology B
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Fungal Diversity the reaction of pe
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Fungal Diversity Fig. 21 Chaetomast
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Fungal Diversity Fig. 23 Cilioplea
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Fungal Diversity with one or two ve
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Fungal Diversity Moreau 1953; Munk
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Fungal Diversity Material examined:
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Fungal Diversity Fig. 28 Dothidotth
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Fungal Diversity Fig. 29 Dubitatio
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Fungal Diversity assigned Entodesmi
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Fungal Diversity fusoid to somewhat
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Fungal Diversity Fig. 33 Hadrospora
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Fungal Diversity Fig. 34 Halotthia
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Fungal Diversity Notes Morphology H
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Fungal Diversity some effused Hypox
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Fungal Diversity spores are actuall
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Fungal Diversity Fig. 100 Sporormie
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Fungal Diversity Fig. 102 Kriegerie
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Fungal Diversity Phylogenetic study
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Fungal Diversity Fig. 104 Zeuctomor
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Fungal Diversity Fig. 105 Muroia ni
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Fungal Diversity pseudoparenchymato
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Fungal Diversity Eremodothis Arx, K
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Fungal Diversity Type species: Macr
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Fungal Diversity ascospores of Plat
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Fungal Diversity monoceras Alcorn n
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Fungal Diversity tomataceae, Melano
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Fungal Diversity 1987b). Based on a
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Fungal Diversity only do so under v
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Fungal Diversity Dennis RWG (1968)
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Fungal Diversity Kirk PM, Cannon PF
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Fungal Diversity Saccardo PA (1880)
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Fungal Diversity Winter G (1887) As
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Pleosporales - CBS - KNAW

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