Crowned in Sticta

 Fencepost of the Week #248

 Sticta sylvatica thriving in a damp, shady corner of the paddock.

 

Bilberry Webs

 Fencepost of the Week #247

 

Minutely Fruticose Jelly Lichens

 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 1 entire organism

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: Scytinium teretiusculum ?

Column 3: Ricasolia virens cyanomorph ?

Column 4: Ricasolia amplissima cephalodium

 

I recently 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

Now updated with a specimen of what I think is Scytinium teretiusculum; which I found for the first time in November. 

 Other similar things: 

Polychidium muscicola and Scytinium pulvinatum - I've only found these in saxicolous situations.  

I believe have yet to find Leptogidium dendriscum or a pure cyanomorph of Ricasolia amplissima both of which would fit into this category. Will keep looking.