Pleosporales - CBS - KNAW
Pleosporales - CBS - KNAW
Pleosporales - CBS - KNAW
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Fungal Diversity<br />
1980) has scolecospores without swollen central cells or<br />
breaking into partspores.The recent introduction of Ophiobolus<br />
shoemakeri Raja & Shearer (Raja and Shearer 2008)<br />
is probably incorrect since the ascospores do not split up<br />
into partspores and there is no swelling above septum<br />
either. In particular, its freshwater habitat also distinguishes<br />
it from other species of Ophiobolus. Like<br />
Ophiobolus, Ophiosphaerella is in need of phylogenetic<br />
analysis but appears to be closely related to Phaeosphaeriaceae<br />
(Schoch et al. 2006).<br />
Ostropella (Sacc.) Höhn., Annls mycol. 16: 144 (1918).<br />
(<strong>Pleosporales</strong>, genera incertae sedis)<br />
≡ Ostropa subgen. Ostropella Sacc., Syll. fung. (Abellini)<br />
2: 805 (1883).<br />
Generic description<br />
Habitat terrestrial, saprobic. Ascomata large, erumpent<br />
to superficial, solitary or gregarious, globose to subglobose,<br />
with broad and compressed papilla and slit-like<br />
ostiole. Peridium carbonaceous. Hamathecium of dense,<br />
long trabeculate pseudoparaphyses, anastomosing and<br />
branching, rarely septate, embedded in mucilage. Asci<br />
clavate with very long and thin and furcate pedicels.<br />
Ascospores pale brown, ellipsoid to fusoid, 1-septate,<br />
constricted.<br />
Anamorphs reported for genus: none.<br />
Literature: Barr 1990a; Chesters and Bell 1970; Holm and<br />
Yue 1987; Huhndorf 1993; Müller and von Arx 1962;<br />
Müller and Dennis 1965; Saccardo 1883.<br />
Fig. 71 Ophiosphaerella<br />
graminicola (from LPS 858,<br />
holotype). a Ascomata on the<br />
host surface. Note the protruding<br />
disk-like papilla. b Section<br />
of an ascoma. c Asci in<br />
pseudoparaphyses with short<br />
pedicels. d–f Cylindrical asci<br />
with short pedicels. Scale bars:<br />
a=0.5 mm,<br />
b=100 μm, c–f =10 μm