Irish lichens

Parmeliella testacea
Order: Peltigerales       Family: Pannariaceae

Species: Parmeliella testacea

Growth type squamulose.
Photos: On hazel. The Burren, W Ireland. BLS Burren meeting 2009

Grey-brown or reddish-brown squamules, 2-3mm wide with radiating lobes. Black hypothallus visible between squamules, not forming continuous band round thallus margin. Marginal globose isidia form grey granular crust. Apothecia rare. Smells of antiseptic if crushed when wet.

Found among moss on broadleaved trees and rocks in shaded, damp woodland in W and SW Ireland. Chemical reactions negative.

Similar: P. triptophylla. Continuous hypothallus, squamules 1mm.


Parmeliella testacea


Parmeliella testacea
Parmeliella testacea. BLS Burren meeting, April 2009

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