Observation 210773: Ascodichaena rugosa Butin
When: 2015-07-18
Who: zaca
No herbarium specimen

Notes: Nothing better to start the observations from a new location that something completely unknown. In this case, it is a lichenicolous fungus growing on the thallus of a Graphis sp. (one of those that are not supposed to exist here). This lichenicolous fungus is rather unusual, since it has no basidia, nor asci, but it has some big conidiospores. This is the first time I face such situation and I don’t know very well how to interpret the results of the microscopy. Maybe someone can help.

Species Lists

Images

540564
540565
540566
540575
Microscopy: Sections;
540576
Microscopy: Hymenium-1;
540577
Microscopy: Hymenium-2;
540578
Microscopy: Hymenium-3.

Proposed Names

58% (1)
Based on microscopic features
86% (1)
Eye3 Eyes3
Recognized by sight: with the help of a friend.
Used references: utin H. (1977). “Transactions of the British Mycological Society” 69 (2). pp. 249–54.
Based on microscopic features

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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This is a very curious fungus.
By: zaca
2015-08-04 15:36:16 PDT (-0700)

It is one that has an " imperfect stage " and that is what is shown in the microscopy pictures. It turns out, in the same place I found one in the " perfect stage " and could see the asci and spores.
For those interested in this type of fungi I strongly recommend the given reference ( available from https://en.wikipedia.org/wiki/Ascodichaena ) , where many details of the development of this species are given.
It results that is not a lichenized one and the presence of the alga seems to be accidental (and related with the Graphis). Also it is not a parasite on Graphis, as one can understand from the above cited paper regarding its grow form.

Microscopy added.
By: zaca
2015-07-20 13:23:33 PDT (-0700)

Created: 2015-07-20 13:08:02 PDT (-0700)
Last modified: 2015-08-04 15:35:18 PDT (-0700)
Viewed: 50 times, last viewed: 2016-10-21 11:53:42 PDT (-0700)
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