Observation 75232: Leptorhaphis Körber
When: 2011-07-20
No herbarium specimen

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Recognized by sight
29% (1)
Eyes3
Recognized by sight

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The specialsits have spoken…
By: Andrew Khitsun (Andrew)
2016-01-17 19:54:39 PST (-0800)

You have a specimen from observation 220956 which I believe to be identical to this. Both seem to be on aspen.

You pick the difficult ones don’t you?
By: Jason Hollinger (jason)
2011-09-03 12:08:38 PDT (-0700)

This looks a little like the damage caused by snails. They leave parallel “tracks” where they’ve eaten the upper layers of crustose thalli. But it looks like all these “tracks” are concentric around knots. Snail “tracks” are much more random. I’d love to hear what the specialists say about this, too!

Dead one?
By: Andrew Khitsun (Andrew)
2011-09-03 10:32:24 PDT (-0700)

I have a feeling that this is a trace left by lichen that was here some time ago. I’ve seen similar (but much smaller) formations where I think Physcia lichen were before. I wonder if the orbits corresponded to an annual growth, but then something happened (tree grew in diameter and bark started cracking?) and lichen died, leaving this trace. I’m waiting for the specialists do debunk this myth of mine.

Created: 2011-09-03 10:17:12 PDT (-0700)
Last modified: 2016-01-17 18:53:56 PST (-0800)
Viewed: 45 times, last viewed: 2016-10-27 03:47:51 PDT (-0700)
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