Flora of New Zealand Series

Verrucaria punctiformis Pers., Annln Bot. 5: 19 (1794).

Thallus in indeterminate patches, grey-brown, thin, smooth, shining or ± lacking, corticolous. Perithecia 0.2 mm diam., black, carbonaceous, shining, scattered, simple, emergent, subglobose, ± evenly spaced. Ascospores narrowly ellipsoid-oblong, 1-septate, 14-17 × 3-5 µm.

N: S: Throughout, widespread on bark of introduced trees Betula, Fraxinus etc., in parks and gardens.

Cosmopolitan