Irish lichens

Leptogium plicatile

Order: Peltigerales       Family: Collemataceae

Species: Leptogium plicatile

Growth type foliose.
UK photographs. Identified by Brian Coppins

Variable. Convoluted dark olive-brown or red-brown thallus, loosely rosette-shaped, closely adpressed. Thick, tough, +/- ridged lobes with divided, pleated margins (most noticable when dry). Coarse, isidia-like warts are sometimes present, apothecia infrequent.

Found on hard, damp limestone and horizontal tombstones. Occasional on siliceous rock affected by calcareous seepage.

Similar: Collema auriforme. Becomes jelly-like when wet.


Leptogium plicatile


Leptogium plicatile
Leptogium plicatile February 2010

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