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Pleosporales - CBS - KNAW

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Fungal Diversity<br />

Fig. 33 Hadrospora fallax<br />

(from BR, Capsa: K 7534,<br />

holotype). a Ascomata forming<br />

a cluster on the host surface. b<br />

Section of an ascoma. Note the<br />

peridium structure. c Section of<br />

a partial peridium. Note the<br />

pseudoparenchymatous cells. d<br />

Asci in pseudoparaphyses. e–i<br />

Reddish brown multiseptate<br />

ascospores. Scale bars: a=<br />

0.5 mm, b=100 μm, c, d=<br />

50 μm, e–i=20 μm<br />

Type species<br />

Halotthia posidoniae (Durieu & Mont.) Kohlm., Nova<br />

Hedwigia 6: 9 (1963). (Fig. 34)<br />

≡ Sphaeria posidoniae Durieu & Mont. Exploration<br />

scientifique de l’Algérie, pp. 502–503, Taf. 25, Abb. 8a-i, 1849.<br />

Ascomata 0.8–1.1 mm high×1.5–2.1 mm diam., solitary,<br />

gregarious or confluent, broadly conical to subglobose,<br />

flattened at the base, carbonaceous, immersed to<br />

erumpent, ostiolate, epapillate (Fig. 34a). Peridium 165–<br />

275 μm thick at sides, thicker near the apex, plectenchymatous.<br />

Hamathecium of dense, long cellular pseudo-

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