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07-10-2013 00:38

Stip Helleman Stip Helleman

Hallo to all,last friday I collected a piece of a

06-10-2013 23:09

Ralph Vandiest Ralph Vandiest

Hello,I found these small bright yellow cups &

06-10-2013 00:25

Malcolm  Greaves Malcolm Greaves

Could someone help with this small cup found on a

06-10-2013 15:35

Alex Akulov Alex Akulov

Dear friends,Today my wife find a Discomycete samp

28-09-2013 23:32

Alex Akulov Alex Akulov

Dear Friends,Today on the dead fallen branches of

03-10-2013 19:05

Gilbert MOYNE

Voici un Hymenoscyphus qui me pose bien des problÃ

03-10-2013 19:54

Bernard Declercq Bernard Declercq

Good evening,During my recent stay in Portugal, Al

26-09-2013 21:48

Alessio Pierotti Alessio Pierotti

Qualcuna può darmi la mail di Jacques ?Grazie, Al

03-10-2013 09:35

Alessio Pierotti Alessio Pierotti

some friend can help me for this book? Thank you!Â

01-10-2013 10:28

Masanori Kutsuna

Hello everyone.I found small disco on dead stems.

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Lasionectria on lichen
Stip Helleman, 07-10-2013 00:38
Stip HellemanHallo to all,
last friday I collected a piece of a Parmelia-like lichen on bark that looked infected, under the dissecting microscope I found orange hairy perithecia. My best guess is Lasionectria, but lacking any literature about it I am stucked here.
The mature Perithecia are 120 - 150 mu big, KOH negative spores 1 septate 18,5-21,5 x 3,5 no striation is seen, hairs are with thick glassy walls up to 33 x 9,2
Any help is welcome,
T.I.A.
Stip
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Stip Helleman, 07-10-2013 00:41
Stip Helleman
Re : Lasionectria on lichen
micro
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Christian Lechat, 07-10-2013 05:21
Christian Lechat
Re : Lasionectria on lichen
I do not know what is your specimen, there is no Lasionectria known on Lichen. It would be useful to see a section through ascomatal wall to be sure that is the genus Lasionectria.

Regards,
Christian
Walter Gams, 07-10-2013 08:25
Walter Gams
Re : Lasionectria on lichen
Dear Stip,  Please send some material to Benjamin Stielow at CBS for isolation in culture. Such interesting fungi must be cultured and analysed with molecular methods.  Best wishes   Walter
Alain GARDIENNET, 07-10-2013 08:34
Alain GARDIENNET
Re : Lasionectria on lichen
It's probably the one called Trichonectria rubefaciens.
Alain
Hans-Otto Baral, 07-10-2013 08:44
Hans-Otto Baral
Re : Lasionectria on lichen
Did you compare Trichonectria rubefaciens? I have images of a collection of Piotr: Trichonectria rubefaciens, PP20080720-003, 010.jpg
Zotto
Stip Helleman, 07-10-2013 16:14
Stip Helleman
Re : Lasionectria on lichen
Thanks to all,
Christian, even for me this is too small to make a section freehand.
it seems to be Trichonectria rubefaciens indeed from pictures, although I could not find a description of the species yet.
Walter, could you send me the e-mail adress of Benjamin Stielow so I can can contact him about it, there seems to be no sequence of this species in Genbank.
Best wishes,
Stip
Walter Gams, 07-10-2013 16:51
Walter Gams
Re : Lasionectria on lichen
Het is B.Stielow@cbs.knaw.nl
He will probably forward the material to Pedro Crous or Lorenzo or other interested people.
Stip Helleman, 07-10-2013 20:29
Stip Helleman
Re : Lasionectria on lichen
Bedankt Walter