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24-11-2013 18:45

Björn Wergen Björn Wergen

Hi friends,and again, there is an interesting pleo

24-11-2013 10:10

Alessio Pierotti Alessio Pierotti

Some friend have this article ?Cannon, P. F. 1997.

22-11-2013 16:39

Mateusz Wilk

Dear Friends!I am desperately seeking these articl

22-11-2013 22:29

Maren Kamke Maren Kamke

Hi everybody,I found this one on wood (Fagus or Qu

22-11-2013 13:06

Gernot Friebes

Hi,looking for literature again. :-) This time:Apt

22-11-2013 13:05

Garcia Susana

Hi again. This ascomycete also was growing in she

21-11-2013 20:59

Garcia Susana

Hi all I've found this ascomycete in sheep dung.A

21-11-2013 18:21

Joop van der Lee Joop van der Lee

Found on cow dung,Fruit body olmost circular.Sting

21-11-2013 18:57

Joop van der Lee Joop van der Lee

Foiund on cow dung,Frutbody disk shaped dark yell

21-11-2013 19:20

Björn Wergen Björn Wergen

Hi there,does anybody have this one:Réblová, M.&

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Pleospora on Clematis
Björn Wergen, 24-11-2013 18:45
Björn WergenHi friends,

and again, there is an interesting pleosporaleous species growin on dead Clematis stems with distinct setae on the black, hemisphaerical pseudothecia and clavate, 7-8 septated ascospores, which have indistinct, hyaline appendages on both endings (upper ending with hemisphaerical, lower one with conical appendage).

Spores are 25-31x8-10µm, asci 100-130x15-20µm, short stalked and biseriate. I have also found conidial state of very small, beaked conidiomata with Stemphylium-like conidiospores of 14-19x7-9µm.

After comparing several species with Wehmeyer, I have the idea of Pleospora dura, which has tomentose hairs instead of the stiff setae I have recorded. Probably you can tell me something about the relation in Pleospora with their conidial states. In Wehmeyer 1961, P. herbarum is described as attended by Stemphylium state.

I think its time to read Wehmeyer's works...Pleospora is still undeterminable for me :(

[NFF = anamorph, HFF = teleomorph]

Thanks to everyone who can tell me something about it.

regards,
björn
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Björn Wergen, 24-11-2013 19:01
Björn Wergen
Re : Pleospora on Clematis
P. ambigua has many similarities, even if it is figured very different. Wehmeyer gives matching spore and ascus sizes and, more important, distinct stiff hairs and many substrates for this species.

He only describes the spores as "dark yellow brown to red brown"...
Alain GARDIENNET, 24-11-2013 20:09
Alain GARDIENNET
Re : Pleospora on Clematis
Hi Björn,
Perhaps have you to look towards Cilioplea species.
Alain  
Björn Wergen, 24-11-2013 20:30
Björn Wergen
Re : Pleospora on Clematis
Yes you are so right, its Cilioplea coronata...oh man diese blöden Ascomyceten immer ^^

:D Thanks Alain!

regards,
björn
Yannick Mourgues, 24-11-2013 23:55
Yannick Mourgues
Re : Pleospora on Clematis
Yes, Alain is right again !
Cilioplea Munk, Dansk Bot. Ark.15(2) : 113, 1953 is a genus that shows ascocarps with short apical setae.
I remember that C. kansensis have hyaline /yellowish setae and C. coronata brown setae. Here it's clearly C. coronata !
Beautiful discovery!