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07-10-2012 20:58

Esquivel-Rios Eduardo

Hi All.I fond this Hysteriaceae in a dead trunk of

05-10-2012 21:23

Esquivel-Rios Eduardo

Hi All.I found this Hypoxylon in a dead trunk, all

05-10-2012 18:28

Yatsiuk Iryna Yatsiuk Iryna

Hello, dear friends! Could you please help me wit

05-10-2012 15:31

Björn Wergen Björn Wergen

Hi there,I am coming again with an interesting pyr

05-10-2012 03:30

Esquivel-Rios Eduardo

Hi AllThis Hypoxylon (?) recently found With a la

04-10-2012 01:17

Malcolm  Greaves Malcolm Greaves

I tentatively identified this find as Scutellinia

03-10-2012 13:26

Malcolm  Greaves Malcolm Greaves

I found this white "Scutellinia" look alike on woo

03-10-2012 02:51

Esquivel-Rios Eduardo

Hi All.I found this Psilopezia (?) in a dead trunk

01-10-2012 20:43

Martin Bemmann Martin Bemmann

Dear Friends,some of you will be already aware of

30-09-2012 11:25

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Trouvé sur branche mort de Salix, ce minu

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Hysteriaceae from Panama
Esquivel-Rios Eduardo, 07-10-2012 20:58
Hi All.

I fond this Hysteriaceae in a dead trunk of Erytropleum guineense , may be a Rhystiohysteron,  apothecium 3 - 4 mm. ascospores 22-30 x 7 - 9 microns, only found ascospores and in need help for indentification.  Thanks.
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Hans-Otto Baral, 07-10-2012 21:09
Hans-Otto Baral
Re : Hysteriaceae from Panama
yes, it is Rhystidhysteron? rufulum

Zotto
Alain GARDIENNET, 07-10-2012 22:00
Alain GARDIENNET
Re : Hysteriaceae from Panama

Yes, it is !
 To go further, read the paper :

Mycological research 113 (2009) 405-416

Alain    

Andrew N. Miller, 08-10-2012 16:07
Andrew N. Miller
Re : Hysteriaceae from Panama
Yes, R. rufulum.  I found this in eastern Brazil in 2010.  Interesting geographical distribution assuming it is all one species.

Andy
Hans-Otto Baral, 08-10-2012 16:25
Hans-Otto Baral
Re : Hysteriaceae from Panama
The paper by Murillo et al. 2009 presents 4 very clear clades within R. rufulum, which correspond to some differences in ascus and ascospore size (see below, ascus data probably from dead asci).

Regrettably, only two of them were figured, one of which being stated as neotype of R. rufulum. No names were given to the remaining three, though the molecular data strongly support different species, and I cannot see which clade represents the neotype.

If anybody has this paper as pdf (with word search option) I would be grateful, because it would then be easier to understand.

Zotto
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Alain GARDIENNET, 08-10-2012 17:54
Alain GARDIENNET
Re : Hysteriaceae from Panama
Hi Zotto,
Here it is. 
Hans-Otto Baral, 08-10-2012 18:00
Hans-Otto Baral
Re : Hysteriaceae from Panama
Thanks, Alain! If the words are properly found, the word neotype appears only once in the legend, not in the main text. Now I also understand that diferent hymenial colours are diagnostic.

Zotto
Esquivel-Rios Eduardo, 08-10-2012 22:54
Re : Hysteriaceae from Panama
Dr.Eric W.A. Boehm, Hysteriaceae expert, confirm is R. rufulum,. A detailed description of this genus can be found in: 

http://www.eboehm.com/id62.html
Hans-Otto Baral, 08-10-2012 22:59
Hans-Otto Baral
Re : Hysteriaceae from Panama
Yes, but the article by Murillo suggests that different species hide behind H. rufulum, which are apparently undescribed.

For your specimen Clade III would fit with spore size and hymenial colour.
Esquivel-Rios Eduardo, 09-10-2012 01:15
Re : Hysteriaceae from Panama
Both papers, Murillo et al and Boehm pubished in 2009. Murillo et al included this genera in Patellariaceae, but Bohem not agree. "Boehm et al. (2009) were the first to provide sequence data indicating that Rhytidhysteron does not lie within the Patellariaceae. Although initially based on only a single isolate of R. rufulum (CBS 306.38), the genus was tentatively noted to be associated with the Hysteriaceae. In the current study, a total of eight isolates, representing three species, clearly indicates that that the genus Rhytidhysteron belongs to the family Hysteriaceae, and not to the Patellariaceae, the latter defined in this study to include Hysteropatella clavispora (CBS 247.34), Hp. elliptica (CBS 935.97), and Patellaria atrata (CBS 958.97).
Esquivel-Rios Eduardo, 09-10-2012 01:22
Re : Hysteriaceae from Panama
About the Clades, i agree with you, this specimen belongs to Clade III of Murillo. But i think the clades are small mutations in color, metabolism, etc. not a taxonomic criteria or  species level differentiation.
Hans-Otto Baral, 09-10-2012 07:44
Hans-Otto Baral
Re : Hysteriaceae from Panama
I am not sure about that, I believe more in different species. The spore size differences are quite strong, and the genetic data seem to be convincing. These fungi should be studied in more detail, the pigments are apparently also chemically different. There are similar differences in Xylariaceae, for example.

Yes, the relation to the Hysteriales is obvious from this molecular study.

Zotto