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Pleosporales - CBS - KNAW

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Fungal Diversity<br />

Fig. 32 Falciformispora lignatilis<br />

(from BRIP 16972, holotype).<br />

a Section of a superficial<br />

ascoma. The peridium comprises<br />

two layers. b, c Squash<br />

mounts showing asci with wide<br />

pseudoparaphyses. The asci are<br />

cylindro-clavate with very short<br />

pedicels. d–f Hyaline multiseptate<br />

ascospores. Note the elongated<br />

appendage at the base<br />

(arrow head). Scale bars:<br />

a, b=100 μm, c=50 μm,<br />

d–f=10 μm<br />

holotype). (Note: The specimen is not in good condition,<br />

only a few ascomata left).<br />

Notes<br />

Morphology<br />

Boise (1989) formallyestablishedHadrospora to accommodate<br />

Trematosphaeria fallax and T. clarkia (Sivan.) Boise,<br />

and Hadrospora fallax (syn. T. fallax) was selected as the<br />

generic type. Hadrospora is a widely distributed species that<br />

has been reported from Belgium, China, Italy, Japan,<br />

Switzerland and the United States (Boise 1989; Fisher and<br />

Webster 1992; Shearer and Crane 1971; Tanaka and Harada<br />

2003a; Webster 1993). Hadrospora was temporarily<br />

assigned to Phaeosphaeriaceae based on its “small, thinwalled<br />

ascomata and narrow cellular pseudoparaphyses”<br />

(Boise 1989), which is distinguished from other genera of<br />

Phaeosphaeriaceae by its “large, stout ascospores that form<br />

within oblong-ovoid asci” (Boise 1989). Currently, Hadrospora<br />

includes two species, i.e. H. fallax and H. clarkii<br />

(Sivan.) Boise differentiated by ascospore size.<br />

Phylogenetic study<br />

None.<br />

Concluding remarks<br />

Hadrospora seems not closely related to Phaeosphaeriaceae.<br />

Halotthia Kohlm., Nova Hedwigia 6: 9 (1963). (?Zopfiaceae)<br />

Generic description<br />

Habitat marine, saprobic. Ascomata large, solitary, gregarious<br />

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

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

ostiolate, epapillate. Peridium plectenchymatous.<br />

Hamathecium of dense, long, cellular pseudoparaphyses,<br />

septate, branching. Asci 8-spored, bitunicate, cylindrical,<br />

with a short pedicel. Ascospores uniseriate, ellipsoidal,<br />

subcylindrical or obtuse-fusoid, dark brown, 1-septate,<br />

constricted at the septum.<br />

Anamorphs reported for genus: none.<br />

Literature: Kohlmeyer 1963; Suetrong et al. 2009.

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