Observation 60300: Lichen P. Micheli
When: 2010-11-28
No herbarium specimen

Proposed Names

28% (1)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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By: Jason Hollinger (jason)
2010-12-05 13:53:39 EST (-0500)

The coloration suggests Punctelia (bluish and not at all yellowish-green), but that could be due to false coloration of the photo (reflected light from a blue sky will often make usnic species look bluish). Punctelia has atranorin (bluish tint, K+y); Flavopunctelia has usnic acid (yellowish- or milky- green tint, K-, KC+y).

Options are:

Flavopunctelia flaventior: brown to black lower surface, usnic acid + lecanoric acid (cortex K- C- KC+gold, medulla K- C+red KC+red)
Punctelia subrudecta group: pale to brown lower surface, atranorin + lecanoric acid (cortex K+yellow C- KC-, medulla K- C+red KC+red)
Punctelia borreri: dark brown to black lower surface, atranorin + gyrophoric acid (cortex K+y C- KC-, medulla K- C+pink KC+pink)

The Bhutan checklist shows both F. flaventior and P. borreri are present, but not P. subrudecta group (including P. casseana and P. perreticulata).

That’s a lot of work to say it’s probably P. borreri!

Created: 2010-12-05 12:53:48 EST (-0500)
Last modified: 2010-12-05 12:53:51 EST (-0500)
Viewed: 30 times, last viewed: 2016-05-25 15:29:31 EDT (-0400)
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