• Peltigera venosa (L.) Hoffm.
Peltigera venosa
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(Map updated: 11 August 2009)

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 characteristics

  • 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

 Simms, M. J., (2016). Peltigera venosa (L.) Hoffm.. [In] LichenIreland. Accessed on 2019-01-16.