Observation 69280: Ochrolechia A. Massal.
When: 2011-06-13
Who: zaca
No herbarium specimen

Notes: Growing on bark.
Microscopic preparations: KOH with a drop of congo-red.

Images

151423
151424
151425
Chemical reactions.
151426
Apothecial section.
151427
Apothecial sections: details.
151428
Apothecial section, spores in ascus and isolated spores.

Proposed Names

58% (1)
Eye3 Eyes3
Based on microscopic features: See attached photos.
Based on chemical features: See attached photos.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Thanks, Jason.
By: zaca
2011-06-15 11:53:28 CDT (-0400)

I will keep your advice in mind.

An important thing to check for this genus
By: Jason Hollinger (jason)
2011-06-15 11:20:08 CDT (-0400)

Check the spot test of the cortex, disk and medulla of the apothecia separately — very difficult to do, requiring careful application with needle or toothpick under 30x or more magnification (at least for me!) For example:

O. africana has C+r medulla but C- cortex
O. trochophora has C- medulla but C+r cortex

Created: 2011-06-15 09:29:05 CDT (-0400)
Last modified: 2011-06-15 09:29:05 CDT (-0400)
Viewed: 24 times, last viewed: 2016-03-30 05:23:42 CDT (-0400)
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