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Apiosordaria verruculosa
Nomenclature
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Family: LasiosphaeriaceaeGenus: Apiosordaria
SUMMARY
Stroma absent. Ascomata perithecial, 200-450 µm diam, 250-550 µm tall, shortly pyriform, ostiolate, the basal part pale brown and often translucent (material described from culture), the upper part dark brown to black, membranous, the upper part covered in pale brown smooth hairs to 150 µm long and ca 3 µm diam. Peridium composed of several layers of mid brown thin-walled textura angularis with an outer mat of rather thick-walled brown textura intricata with hyphae to 3.5 µm diam, more strongly pigmented in the neck region. Interascal tissue composed of numerous filiform to vesicular simple thin-walled paraphyses to 4 µm diam, often breaking down before maturity. Asci 110-135 x 13-16 µm, cylindrical, rather long-stalked, fairly thin-walled, the apex rounded to truncate with a narrow J- apical ring 3-4 µm diam, 4-spored. Ascospores arranged obliquely uniseriately, 26-31 x 13-15 µm, fusiform to almost rhombic, the upper cell 19-25 µm long, the base truncate and the apex acute, dark brown, nearly opaque at maturity, with an apical germ pore, strongly ornamented with a network of pits visible in SEM but appearing as a series of aggregating peg-like projections to 2.5 µm in length in LM, the lower cell hyaline and ± conical, sometimes collapsing, the part near the septum sometimes weakly ornamented; a proportion of ascospores with markedly small or absent hyaline cells, apparently at least usually without apical mucous appendages.
Anamorph: Cladorrhinum sp. Conidiogenous cells formed as fertile side branches from vegetative hyphae, pale brown, to 5 µm diam, with conidia formed from one or several lateral shortly projecting loci from each cell, with conspicuously flared collarettes, proliferating percurrently. Conidia 2-3.5 µm diam, globose to pyriform, rather thick-walled, hyaline, aseptate.
A rather variable species. The anamorph should correctly be referred to as Cladorrhinum sp. rather than C. foecundissimum as reported in Cannon et al. (1985); see Mouchacca & Gams (1993).