Irish lichens

Leptogium turgidum

Order: Peltigerales       Family: Collemataceae

Species: Scytinium turgidum (Leptogium turgidum)

Growth type foliose.
UK photographs. Identified by Brian Coppins

Shiny, thickish dark-olive to reddish-black thallus with small, turgid lobes that can appear shrubby. The upper surface is often densely granular-isidiate, apothecia can be either absent or abundant.

Occurs on calcareous soil and walls and crumbling mortar. Few Irish records but probably under-recorded. Chemical reactions negative

Intermediate morphs occur between Leptogium plicatile (larger lobes) and Leptogium schraderi (cylindrical lobes).

Leptogium turgidum

Leptogium turgidum
Leptogium turgidum February 2010

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