When: 2018-09-28

Collection location: Torrey Pines State Reserve, San Diego Co., California, USA [Click for map]

Who: Cindy Trubovitz (Trubo)

Specimen available

The apothecia appear to have a white pruinose and if a Lecanora, apothecia seem smaller than my previous observation referenced. The thallus turned yellow with orange undertones with NaOH application.Scraping the thallus lightly produced yellow and removing the apothecia left a pink/red surface.


reaction after applying NaOH
light scraping of thallus produced yellow and reddish spots remained after removing a few apothecia.

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= Observer’s choice
= Current consensus


Add Comment
It’s the yellow scratches that give it away
By: Jason Hollinger (jason)
2018-09-29 22:27:12 CDT (-0500)

That shows that it has Trentepohlia as its algae, not the usual Trebouxia. And for whatever reason, most trentepohlioid lichens are completely unrelated to trebouxioid lichens.

Thanks Jason,
By: Cindy Trubovitz (Trubo)
2018-09-29 21:42:50 CDT (-0500)

That was going to be my second choice:)

Created: 2018-09-29 17:50:51 CDT (-0500)
Last modified: 2018-09-29 22:27:13 CDT (-0500)
Viewed: 30 times, last viewed: 2019-01-01 05:53:08 CST (-0600)
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