Observation 215819: Caloplaca flavorubescens (Hudson) J.R. Laundon

When: 2015-08-21

Collection location: Powers Bluff County Park, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

Specimen available

Proposed Names

2% (2)
Recognized by sight
84% (1)
Based on chemical features: yellow pigment is an anthraquinone (K+ violet)

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I think the thallus is the same, though
By: Jason Hollinger (jason)
2016-01-09 12:32:56 PST (-0800)

Always that thin, smooth, shiny, continuous, bright yellow thallus. I admit I first considered Pertusaria, too. But even P. texana doesn’t have ostioles that bright orange! And xanthones are not K+ violet. I don’t know of any Pertusaria in N. America with anthraquinones. Or anywhere in the world for that matter, but don’t quote me on that — there are a lot of species of Pertusaria!

Just looked up this critter elsewhere,
By: Andrew Khitsun (Andrew)
2016-01-09 12:10:50 PST (-0800)

so basically if there is no apothecia visible, it will look like something completely different because of those warts.

The pertusarioid warts
By: Jason Hollinger (jason)
2016-01-08 23:43:10 PST (-0800)

are pycnidia I think.

Looks like Pertusaria to me at close range, but what’s with the yellow hue?
By: Andrew Khitsun (Andrew)
2015-09-09 17:05:08 PDT (-0700)

Created: 2015-09-09 16:20:43 PDT (-0700)
Last modified: 2016-01-08 23:42:28 PST (-0800)
Viewed: 66 times, last viewed: 2017-06-20 17:49:10 PDT (-0700)
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