Flora of New Zealand Series

D. cinerea (Knight et Mitten) Müll. Arg., Bull. Herb. Boissier 2, App. 1: 78 (1894).

Opegrapha cinerea Knight et Mitten, Trans. Linn. Soc. Lond. 23: 101 (1860).

Lectotype (fide Hayward, loc. cit., p. 576); New Zealand. Auckland. Charles Knight, BM!

Thallus corticolous, pale greenish-grey or yellowish to greyish-white, ± waxy, thin to disappearing. Lirellae prominent, swollen, black, carbonaceous, clustered, short and broad 0.5-1 × 0.1-0.4 mm, slightly shining, straight or slightly curved, unbranched, thalline margin lacking, proper exciple distinct, closing with a narrow slit, furrowed into 2-5 ridges, base closed. Ascospores colourless, 1-septate at first to 4-septate, becoming muriform at maturity (6-7 × 2-3-locular), 24-27 × 7-13 µm.

N: Auckland, Whitianga, Mt Mangatawhiri (Coromandel). S: Kaikoura, Hapuka River. On bark of Leptospermum scoparium and Sophora microphylla.

Endemic