Xylographa perparvula (Stirt.) Müll.Arg.
Arthonia perparvula Stirton, Proc. phil. Soc. Glasg. 10: 301 (1877).
Type: New Zealand, Wellington. Ad ligna vetusta. J. Buchanan, ?WELT - not seen in BM or GLAM.
Thallus pale greyish, very thin, continuous. Apothecia dirty brown-red (K+ purple), sessile, convex, wrinkled, small, to 0.3 mm diam. Ascospores 8 per ascus, ellipsoid to oval, 11-15 × 6-7 µm.
N: Known only from the type collection.
Endemic