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Observation 98736: Fungi Bartl.

When: 2012-06-30

Collection location: Planalto das Cezaredas, Portugal [Click for map]

Who: zaca

No specimen available

During some time I doubted this was a lichen. It seems unreal!
The specimens grew on a pine tree (Pinus pinea). The colors and shine are well represented in the photos (so no problem with the camera); they seem to be carbonized, extremely hard (maybe this as somehing to do with the resin from the tree). I conclude that it must be a lichen, because some dispersed globose isidia (at least looks like it) can be seen and due to the wavy margins of lobes. The form resemble that of Collema or of Leptogium.


Section of a “lobe” (?)

Proposed Names

-8% (3)
Recognized by sight
31% (2)
Recognized by sight
13% (4)
Recognized by sight

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= Observer’s choice
= Current consensus


Add Comment
I thought of Exidia, too
By: Jason Hollinger (jason)
2012-07-06 16:36:43 PDT (-0700)

It can take on this texture when old.

Exidia is doubtful.
By: zaca
2012-07-06 16:23:30 PDT (-0700)

As Collema in lichens, Exidia are jelly fungi and usually they texture are not so hard as I observed in this one. Unless this has something to do with the resin of the pine tree.

That’s what I found with my “not a Collema”
By: Jason Hollinger (jason)
2012-07-06 15:39:45 PDT (-0700)

Nothing recognizable under the scope. Algae/cyanobacteria would be obvious and distributed throughout if it really were Collemataceae or Lichinales.

Maybe this is not a lichen.
By: zaca
2012-07-06 15:29:52 PDT (-0700)

I was not able to find any trace of an alga or any identifiable structure of a fungus. Only some filamentous that can be hyphae or any thing else.

I will follow your suggestion. Thanks,Jason
By: zaca
2012-07-01 13:21:45 PDT (-0700)
I would definitely verify presence of Nostoc
By: Jason Hollinger (jason)
2012-06-30 23:24:58 PDT (-0700)

before fighting with the Collema and Leptogium keys! I collected something just like this in BC and wasted an hour on it before T. Goward wandered by and asked why I was studying an old unlichenized fungus!