Description: This attractive ‘dog lichen’ with small (<2cm diam.), fan-shaped, bright green lobes has a prominently veined underside with attached scab-like outgrowths (cephalodia). Discs are frequent, red-black, held horizontally. Usually, it occurs in association with basic soils in moist situations, for example, near waterfalls; also cliff ledges and heavy-metal mine spoil. In Ireland, recent records herald from County Mayo; before that County Antrim was its headquarters.

Key Identification Features:

• Dog-lichen with bright green, fan-shaped lobes and horizontally-held discs
• Underside of veins with attached cephalodia; wet, mossy calcareous sites in the uplands.

Original text submitted by Vince J. Giavarini

Distribution Map from NBN: Peltigera venosa at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Peltigera venosa at iNaturalist World Species Observations database.