Flora of New Zealand Series

P. simplex (Davies) Vězda, Folia geobot. phytotax. 13: 399 (1978).

Lichen simplex Davies, Trans. Linn. Soc. Lond. 2: 283 (1793).

Thallus white to grey or lacking. Apothecia very small, black, epruinose, with thick plicate proper margin often obscuring disc. Ascospores ellipsoid, 3-4 × 1-2 µm.

N: South Auckland, King Country (Pio Pio). S: Canterbury (Weka Pass, Castle Hill), Southland (Clifden). On calcareous rocks, limestone etc.

Cosmopolitan