Flora of New Zealand Series

Lecanora constans Nyl. Mém. Soc. natn. Sci. nat. Cherbourg 3: 199 (1855).

Thallus closely attached, pale green-grey to brownish, granular, orbicular, in ± neat rosettes or spreading, 1-3 cm diam., corticolous. Apothecia sessile, to 1.5 mm diam., rounded, ± central, disc red-brown to dull black, matt, epruinose, margins crenulate, concolorous with thallus or paler. Ascospores numerous (75-100), ellipsoid, simple, 4-7 × 2.5-4 µm.

S: Canterbury Plains. On bark of Quercus, Sorbus etc. Very much undercollected in New Zealand and poorly known, probably more widely distributed.

Cosmopolitan