Pyrenothrix nigra Riddle
Thallus brownish-black, or greyish-black, minutely coralloid-filamentous, ± closely attached at base, ± fruticose above, spreading in irregular patches, 1-5 cm diam., corticolous. Perithecia occasional, minute, 200-225 µm tall and 160-175 µm thick, pyriform, with a short, thick neck and minute indistinct ostiole. Ascospores brown or brown-black, oblong or broadly fusiform, muriform, 5-7-locular with some cells once-divided, 17-20(-24) × 6-9(-11) µm.
N: North Auckland (Waiwera; near Warkworth). S: Nelson (Puponga). On bark of Leptospermum in damp, humid localities. Associating with: Leptogium azureum, Normandina pulchella and Polychidium contortum.
?Cosmopolitan
