Observation 177214: Lichen P. Micheli
When: 2014-04-20
Who: zaca
No herbarium specimen

Notes: Growing on rocky soil.
All chemical reactions negative.
Only two asci found with 8 spores (see attached photo); Measuring some spores within the asci I got values in the ranges 20 – 25 × 9.5 – 10.5 um; all the other asci were empty or in the process of formation of the spores, some very big e.g. 145 × 30 um. The reaction of the hymenium was I-.

Images

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Microscopy: Hymenium and algal layer;
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Microscopy: Asci and spores.

Proposed Names

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Comments

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I never look …
By: zaca
2014-09-07 14:17:07 CDT (-0500)

at this as a Pertusaria and for sure is not. My first thought was Thelocarpon, but the species in this genus have very small spores. As I told already, this was “one of those days”.

Sure looks like Pertusaria but not with spores that small
By: Jason Hollinger (jason)
2014-09-07 13:42:13 CDT (-0500)

Fascinating.

Created: 2014-09-07 10:14:43 CDT (-0500)
Last modified: 2014-09-07 10:16:28 CDT (-0500)
Viewed: 23 times, last viewed: 2015-09-18 17:12:51 CDT (-0500)
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