Flora of New Zealand Series

Thallus crustose, thin, grey-white, continuous, corticolous. Lirellae prominent, flexuous, occasionally branched, very long (to 8 mm) and slender (0.3 mm), the ends acute, thalline margin thin to disappearing, proper exciple prominent, black, closing with a narrow slit. Ascospores 8 per ascus, 9-10-locular, 6-7 × 28-31 µm. Chemistry: Negative.

S: Westland, Aorangi Reserve, Greymouth. Collected only once in New Zealand, (William Martin CHR).

Pantropical

The very long lirellae with the closed base and the absence of lichen acids distinguish this species.