Trying to make sense of some superficially minutely fruticose, corticolous jelly lichens in Cowal.
Working primarily from the BLS Lichens of Great Britain and Ireland 3 pdfs
Row 2 surface structure (width ~3mm)
Row 3 cross section from near substrate (bottom left) to surface (top right)
Row 4 cells of the cortex (width ~150µm)
Column 1: this is Scytinium lichenoides with well developed isidia, I think.
Column 2: also S. lichenoides. The isidia are so thick that the foliose thallus in completely hidden. But proves to be structurally similar when cut open.
Column 3: Ricasolia virens cyanomorph
Column 4: Ricasolia amplissima cephalodium
I've just found a paper describing a cyanomorph of Ricasolia virens. Column 3 conforms very closely to the description given here: The cyanomorph of Ricasolia virens comb. nov. (Lobariaceae, lichenized Ascomycetes) DOI: 10.5962/p.386096
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