Notes: Posting this because the more I look at several common orange crusts (Lecidea lapicida and others, Porpidea flavocaerulescens and others, Rhizocarpon oederi, and Tremolechia atrata – I’ll post some examples of these) the more they confuse me. Wasn’t even convinced this was a Porpidia until ink mount (see photo) revealed perispore, as some other features could have led to a different interpretation.
Going over references again I’m wondering if this might be P. flavocruenta (apo sectons bled reddish in K). I’ll go ahead and post this and get back after some more consideration (or suggestions from Jason).
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Good to know that K messes it up.
Yes. Didn’t work at first and realized that K might dissolve gelatinous perispore. Anyway it worked in H2O keeping distance between slide and cover glass small.
But I’m blown away by how striking the “halo” is around spores in ink mount. Did you use a bottle of just plain old india ink?
Created: 2012-09-06 10:58:05 CDT (-0500)
Last modified: 2012-09-06 10:58:06 CDT (-0500)
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