Collemataceae Lathagrium fuscovirens (Collema fuscovirens) Growth type foliose Chemical results negative On sunny limestone outcrops, the top of table tombs and dry stone walls Leathery thallus, the dark olive-green to blackish lobes paler below and swelling little when wet. Lobe surfaces are isidiate, the isidia smaller than those of Collema auriforme. Apothecia are sparse or frequent, margins smooth or isidiate.

Lathagrium fuscovirens (Collema fuscovirens)
Corfe Mullen, Dorset. January 2014