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 Biscogniauxia zelandica
BiostatusPresent in region - Indigenous. Endemic
Description: Stromata: Stromata applanate (erumpent from host tissue); 50-130 mm long; 20-40 mm broad; 0.5 mm thick; perithecia not visible; ostioles lower than or more or less equal to stromatal surface; stroma bipartite, outer dehiscing layer dark brown, thin; stromatal surface dark brown (brown vinaceous), or blackish; tissue immediately below surface carbonaceous; KOH-extractable pigments lacking; tissue below perithecia inconspicuous. Perithecia: Perithecia more or less globose, or tubular; surrounded by papyraceous wall layer, shrinking away from wall of stromatal locule; 0.2 mm diam.; 0.4-0.6 mm high.
Asci: Stipe short with spores filling about two-thirds of ascus; amyloid ring broader than high.
Ascospores: Ascospores 16-21 µm long; 5-6.5 µm wide; brown; 1-septate (one large, dark cell and one small pale brown cell); in side view more or less equilateral; in face view fusoid, or elliptic; ends narrowly rounded. Germ slit straight, less than spore-length. Perispore indehiscent in 10% KOH.
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