Well, Ken, this is as far as it goes. I really didn’t save this one for last because it was my favorite. I was progressing from no lichen to mostly lichen. Happy you like it.
Wonder how old that magnificent big lichen is, and how glacially fast that edge expands. Any biologist knows lichens to be a symbiotic combo of fungi and algae but I wonder if there’s ever a bacterial component or significant intruder, other than cyanobacteria standing in for algae. Beautiful combo of science and art! (As expected) Must now go Google where the Youghiogheny River is.
Thank you, Andy. I wish I knew for sure that the little bits are baby versions of the larger lichens. I suppose they could be a different species that just happens to have the same color. They had more relief; the larger lichens were flatter.
I like that kind of lichen, the way it breaks up – beautifully strong composition. I like having the link with the location. I’m remembering the word “crustose.”
Romancing Reality 
This is my favorite (so far) of a fine series. Nice work, Linda.
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October 27, 2017 at 10:10 AM
Well, Ken, this is as far as it goes. I really didn’t save this one for last because it was my favorite. I was progressing from no lichen to mostly lichen. Happy you like it.
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October 27, 2017 at 1:54 PM
It’s a gorgeous close-up of nature’s patterns and textures. I really like the way you have framed the photo.
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October 27, 2017 at 3:28 PM
Thank you, Otto. This was one of those rare instances where I felt strongly, looking through the viewfinder, that I had nailed the composition.
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October 27, 2017 at 4:03 PM
Wonder how old that magnificent big lichen is, and how glacially fast that edge expands. Any biologist knows lichens to be a symbiotic combo of fungi and algae but I wonder if there’s ever a bacterial component or significant intruder, other than cyanobacteria standing in for algae. Beautiful combo of science and art! (As expected) Must now go Google where the Youghiogheny River is.
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October 27, 2017 at 9:15 PM
Thank you, George. I like your wonderings. You’ll let us know if you find an answer, won’t you? The following links may be of interest. They show where on the Youghiogheny I took my rock photographs: http://www.docs.dcnr.pa.gov/cs/groups/public/documents/document/dcnr_009017.pdf and http://www.gis.dcnr.state.pa.us/topo/ogf/OGF_OhiopyleFalls.pdf.
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October 28, 2017 at 2:00 PM
I love this – my favourite too. Two tiny little newcomers – like snowflakes almost, alongside their vast ‘parents’
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October 28, 2017 at 12:56 PM
Thank you, Andy. I wish I knew for sure that the little bits are baby versions of the larger lichens. I suppose they could be a different species that just happens to have the same color. They had more relief; the larger lichens were flatter.
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October 28, 2017 at 2:03 PM
I like that kind of lichen, the way it breaks up – beautifully strong composition. I like having the link with the location. I’m remembering the word “crustose.”
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October 28, 2017 at 4:55 PM
Oo, I didn’t know that word. Thank you! And thanks for commenting on the composition; it’s reinforcing. Glad the links were useful.
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October 28, 2017 at 9:10 PM