Observation 77763: Phlyctis agelaea (Ach.) Flotow
When: 2011-10-01
Who: zaca
No herbarium specimen

Notes: This time I was really surprised. In the field when I saw it I thought it could be a Pertusaria or even some species of Lecanora, although the chemical reactions were a bit strange, but I was not able to see neither apothecia or verruca.
Looking to the photos with magnification was able to see some apothecia partially immersed in the thallus. I became curious and decided to make a preparation to observe the spores. Then I saw these big asci full of spores, more than one hundred for sure.
The next step was difficult: to find, at least to genus, a name for it. Using liaslight.lias.net/, a very useful tool by the way, I came to the conclusion that it must be a Biatoridium sp.. But depare with a lack of information about this genus, maybe because the classification is changing rapidly, and not even CNALH prove to be helpful. Finally, I found some information at the webpage wales-lichen, where a short description and a photo is given for the species Biatoridium monasterienses. As is referred there a similar species is Biatoridium delitescens, with paler apothecia.
However, neither the photo of B. monasteriense or that of B. delitescens, that I saw in artenschutz is similar to my specimen. Nevertheless, the photo of asci that I found in lichenology seems to be equal to mine.

In short, it is almost certainly a species of Biatoridium, it is here to say that I found no alternative to genus within epiphytic lichens with a high number of spores per ascus, probably one of the species mentioned above.

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Eye3 = Observer’s choice
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Add Comment
You are welcome, Martin.
By: zaca
2011-10-03 00:28:49 CEST (+0200)
Thank you, zaca!
By: Martin Livezey (MLivezey)
2011-10-02 20:53:34 CEST (+0200)
About the microscopy,
By: zaca
2011-10-02 02:26:50 CEST (+0200)

I’m using a Bresser microscope, model Biolux NV (similar to the one in this webpage). For the preparation I used KOH with a drop of congo red. The magnifications were 100x (resp. 400x) for the photo Microscopy-I (Microscopy-II).
Thank, Martin, for the interest. Thanks also to Jason for her kind words.

By: Martin Livezey (MLivezey)
2011-10-02 01:53:30 CEST (+0200)

I agree with Jason, this is interesting. Can you share a bit about the microscopy? What magnification? Is it stained? What type of microscope are you using?

Nicely documented!
By: Jason Hollinger (jason)
2011-10-02 00:23:03 CEST (+0200)

Never even heard of the genus before.

Created: 2011-10-02 00:18:35 CEST (+0200)
Last modified: 2012-05-03 22:11:14 CEST (+0200)
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