Pleosporales - CBS - KNAW

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Fungal Diversity Fig. 36 Herpotrichia rubi (from g, f. rh. 2171, type). a Numerous ascomata gregariously immersed in the host tissue. b Section of an ascoma. Note the central ostiole and peridium structure and also note the arrangement of asci and pseudoparaphyses. c Section of partial lateral peridium which comprises cells of textura angularis. d Part of a mature squashed ascus. e Relatively wide, septate pseudoparaphyses. f Immature ascus. Note the furcate pedicel. g–h One-septate ascospores. Note the verruculose ornamentation which is visible at the sides. Scale bars: a=0.5 mm, b=100 μm, c=50 μm, d=20 μm, e–h=10 μm
Fungal Diversity some effused Hypoxylon), 30 Dec. 1885, A.B. Langlois, No. 138 (NY, holotype of Amphisphaeria hypoxylon Ellis & Everh.). Notes Morphology Immotthia was introduced to accommodate a species of Amphisphaeria (A. hypoxylon), which has bitunicate asci, and is characterized by superficial, ostiolate, periphysate, papillate ascomata, cellular pseudoparaphyses, bitunicate, 8- spored, cylindrical asci, ellipsoid, smooth, brown to reddish brown, 1-septate ascospores (Barr 1987a; Wangetal.2004). Phylogenetic study None. Concluding remarks It seems that those Amphisphaeria species with bitunicate asci should be assigned to Pleosporales. Morphologically, Immotthia is somewhat comparable with Herpotrichia. Isthmosporella Shearer & J.L. Crane, Mycologia 91: 141 (1999). (Pleosporales, genera incertae sedis) Generic description Habitat freshwater, saprobic. Ascomata small- to mediumsized, scattered, immersed, erumpent to superficial, globose, papillate, ostiolate, periphysate, membranous. Peridium 2- layered, outer layer composed of brown, pseudoparenchymatic, fusoid-cylindric cells, inner layer composed of fusoid, subhyaline to pale brown, compressed cells. Hamathecium of rare, broad, septate, interascal pseudoparaphyses. Asci 8- spored, bitunicate, fissitunicate, oblong to clavate, with a short pedicel, ocular chamber not observed. Ascospores 3–4 seriate, cylindrical to fusoid, isthmoid at centre, constricted at septa, isthmus 1-septate, surrounded by a gelatinous sheath. Anamorphs reported for genus: none. Literature: Shearer and Crane 1999. Type species Isthmosporella pulchra Shearer & J.L. Crane, Mycologia 91: 142 (1999). (Fig. 38) Ascomata 240–330 μm diam., scattered on decorticated wood, immersed, erumpent to superficial, globose, black, papillate, papilla short, cylindrical, 60 μm long×55 μm wide, ostiolate, periphysate, membranous (Fig. 38a). Peridium 2-layered, outer 3–4 cell layers composed of brown, pseudoparenchymatic, fusoid-cylindric cells, 2–6.5 μm long; inner layer composed of 5–7 rows of fusoid, subhyaline to pale brown compressed cells, 11–20×2–3.5 μm diam. (Fig. 38a and b). Hamathecium of rare, broad, septate, interascal pseudoparaphyses (Fig. 38f). Asci (95-) 135–160(−175)×(25-)30–45(−60) μm, 8-spored, bitunicate, fissitunicate, oblong to clavate, with a short pedicel, ocular chamber not observed (Fig. 38c, d and e). Ascospores 80– 105(−110)×(7-)8–10 μm, 3–4-seriate, cylindrical to fusoid, isthmoid at centre, sometimes bent at isthmus and becoming u- or v- shaped, end cells tapering, 12–17-phragmoseptate, constricted at septa, isthmus 1-septate, 2–5.5×2– 4.5 μm diam., hyaline, frequently fragmenting to form partspores; filled with lipid droplets that merge to form large guttules; surrounded by a gelatinous sheath with a dense region near the isthmus, sheath greatly enlarging in water (Fig. 38g, h, i and j). Anamorph: none reported. Colonies on yeast soluble starch agar containing balsa wood sticks effuse, white. Hyphae hyaline, septate. Material examined: USA, New York, Adirondack Park. Piercefield. Tupper Lake at public boat launch from Rt. 30, UTM Zone 18, 539840 mE, 4892100mN; 44°10″59″N, 80° 31′6″W, on submerged, decorticated wood, 7 Jul. 1994, J.L. Crane & C.A. Shearer A-254-1 (ILLS 53086, holotype). Notes Morphology Isthmosporella was described as a freshwater genus typified by I. pulchra, and is characterized by globose, pseudoparenchymatous ascomata, sparse, septate pseudoparaphyses, fissitunicate asci and hyaline, cylindrical to fusoid, phragmoseptate, isthmoid ascospores surrounded with a gelatinous sheath (Shearer and Crane 1999). Based on the morphological characters, i.e. small, globose ascomata, peridium with small pseudoparenchymatous cells and sparse pseudoparaphyses, Isthmosporella was assigned to the Phaeosphaeriaceae (Shearer and Crane 1999). The aquatic habitat of Isthmosporella, however, disagree with the Phaeosphaeriaceae. Isthmosporella seems less likely to belong to Pleosporineae. Phylogenetic study None. Concluding remarks Molecular phylogenetic studies should be conducted to explore its familial placement within Pleosporales. Kalmusia Niessl, Verh. nat. Ver. Brünn 10: 204 (1872). (Montagnulaceae) Generic description Habitat terrestrial, saprobic. Ascomata small- to mediumsized, solitary, scattered or in small groups, immersed to
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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 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 brown, 8-septate,
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Fungal Diversity Fig. 68 Ohleria mo
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Fungal Diversity Fig. 69 Ohleriella
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Fungal Diversity Fig. 70 Ophiobolus
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Fungal Diversity Type species Ostro
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Fungal Diversity ium thin, composed
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Fungal Diversity Fig. 76 Platysporo
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Fungal Diversity Fig. 77 1 Pleomass
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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 Generic descriptio
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Fungal Diversity composed of one ce
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Fungal Diversity Fig. 84 Saccharico
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Fungal Diversity and nearly black a
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Fungal Diversity dense, long trabec
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Fungal Diversity Anamorphs reported
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Fungal Diversity Fig. 94 Westerdyke
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Fungal Diversity Fig. 95 Wettsteini
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Fungal Diversity Fig. 96 Wilmia bra
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Fungal Diversity Current name: Astr
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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 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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