Observation 117294: Algae
When: 2012-09-16
Herbarium specimen reported

Proposed Names

29% (1)
Recognized by sight
31% (2)
Recognized by sight
57% (1)
Eye3 Eyes3
Used references: ID suggested by Jason Hollinger

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Ugh, K+ mud = who knows??
By: Jason Hollinger (jason)
2012-11-20 00:44:36 CST (-0600)

That’s like the worst result of a K test. Completely ambiguous. I’d even prefer K-. At least I can say something about it then!

Ever since I had a specimen of “Chrysothrix” determined as “just algae” by K. Knudsen, I’ve been very conservative with this group. How embarrassing. I’ll never be able to run for president now.

I tended to think Psilolechia
By: Andrew Khitsun (Andrew)
2012-11-19 19:13:26 CST (-0600)

Just because of the strong green hue, and the habitat – cool moist shady places. But soredial surface is K+ showing some sort of reddish-brownish (not instantaneous, though) turning brown when dry.

By: Jason Hollinger (jason)
2012-11-19 17:56:11 CST (-0600)

Or a pale Caloplaca citrina? Or Psilolechia lucida? Or “just” and algae?? Spot tests don’t usually help. You almost need to look at it at 400x or more to check for hyphae to even be sure it’s a lichen at all. Some will be UV+ yellow, some will have K+ reddish (or in the case of Caloplaca, of course, full-on K+ wine red).

Created: 2012-11-19 17:47:51 CST (-0600)
Last modified: 2015-12-27 21:03:39 CST (-0600)
Viewed: 25 times, last viewed: 2016-10-24 07:15:57 CDT (-0500)
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