Observation 96981: Lichen P. Micheli

When: 2012-06-09

Collection location: Jamor, Oeiras, Portugal [Click for map]

Who: zaca

No specimen available

A wide group of sterile crusts were developing on the trees at this location. Most of them lacking any visible structure and were very similar to the one in the last photo attached, which nevertheless has some soredia. The others present more or less soredia like those in the photos attached.


2012/06/13 – Spot tests.
2012/06/13 – Trees with plenty of specimens.

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More weird spot test results
By: Jason Hollinger (jason)
2012-06-14 17:19:29 CDT (-0400)

All C+ tests should be stronger if anything in KC. Go figure. Maybe the orange is the underlying bark showing through?? But going with C+ orange for the moment, British Flora suggests Lecanora expallens (discrete soralia, thin thallus, K-) Thiophanic acid is responsible for its C+o test. Will be able to confirm this readily with UV once we get that sorted out. :)

Spot tests added.
By: zaca
2012-06-14 16:40:18 CDT (-0400)

Returning to the place of this observation I made the spot tests in several specimens, all with the same result (see the new photo attached): a positive C+ orange reaction, while K- and KC-. I also saw that this species is much more spread locally than I suspected. At some trees is almost a continuous thallus (see the photo with trees).

Don’t worry, there are so many …
By: zaca
2012-06-11 14:19:42 CDT (-0400)

that there is no danger of running out of stock.

You gotta leave something for another day!
By: Jason Hollinger (jason)
2012-06-10 19:50:52 CDT (-0400)


By: zaca
2012-06-10 19:47:43 CDT (-0400)

It is a shame, but I did not spot the tests.

Spot tests?
By: Jason Hollinger (jason)
2012-06-10 19:36:46 CDT (-0400)

With discrete soralia like that, if it has any positive spot test, this should be identifiable. Might need to know if it has Trentepohlia, too. (PD and UV might be required, too, but even K and C might be enough…)

Created: 2012-06-10 19:24:02 CDT (-0400)
Last modified: 2012-06-10 19:24:05 CDT (-0400)
Viewed: 38 times, last viewed: 2017-06-13 03:41:47 CDT (-0400)
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