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

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 15:32:56 CST (-0500)

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 15:10:50 CST (-0500)

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)
2016-01-09 02:43:10 CST (-0500)

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 20:05:08 CDT (-0400)

Created: 2015-09-09 19:20:43 CDT (-0400)
Last modified: 2016-01-09 02:42:28 CST (-0500)
Viewed: 65 times, last viewed: 2017-02-19 12:10:57 CST (-0500)
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