Observation 194183: Lecanora thysanophora Harris
When: 2014-05-03
No herbarium specimen

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I found one with better developed prothallus at the location few miles away (observation 88423),
By: Andrew Khitsun (Andrew)
2014-12-21 12:23:11 PST (-0800)

but that one grows on a bumpy rock with film of slime and algae, while the one here is on barren concrete.

By: Jason Hollinger (jason)
2014-12-21 12:11:41 PST (-0800)

I’ve read repeatedly that this can grow on rock, but never seen it there. The zonate fibrous prothallus looks a lot less conspicuous in the rock version. Maybe because of the rough surface.

On concrete wall.
By: Andrew Khitsun (Andrew)
2014-12-21 10:39:54 PST (-0800)

Created: 2014-12-21 10:35:55 PST (-0800)
Last modified: 2014-12-21 10:38:36 PST (-0800)
Viewed: 12 times, last viewed: 2015-06-09 14:15:41 PDT (-0700)
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