Schismatomma atratum (Stirt.) Zahlbr.
Platygrapha atrata Stirton, Proc. phil. Soc. Glasg. 10: 300 (1877).
Lectotype: New Zealand. Near Wellington. J. Buchanan 38/74, BM!
Thallus white or pale greyish-white, thin, effuse, continuous or slightly cracked, in small patches, 1-2 cm diam., corticolous. Apothecia innate to flat or subconcave, rounded to irregular, to 0.25 mm diam., black, epruinose, thalline margin split transversely. Hypothecium colourless. Ascospores fusiform 3-septate, 16-18 × 3.5-4 µm. Chemistry: Nil.
N: Wellington. Known only from the type collection.
Endemic
