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23-02-2009 20:47

michel hurtu

Bonjour à tous : En forme de coupe ou coussine

23-02-2009 10:37

VASILEIOS KAOUNAS

Found in putrid branch of Quercus ilex. It is asco

22-02-2009 22:13

Alain GARDIENNET Alain GARDIENNET

Bonsoir, Je viens de faire une récolte de Lophio

22-02-2009 15:15

michel hurtu

Bonjour à tous Je pensais avoir ramassé un joli

22-02-2009 14:46

Alain GARDIENNET Alain GARDIENNET

Bonjour, De ce que je sais ou crois savoir le gen

21-02-2009 18:35

Christian Lechat Christian Lechat

ça marche, Alain?

20-02-2009 13:50

Enrique Rubio Enrique Rubio

Quelqu'un a quelque information bibliographique su

20-02-2009 05:01

Roland Labbé

Voici une planche d'un Ascomycète. Je vous remer

19-02-2009 22:48

NC NC

Trouvé hier apré midi , non loin de chez moi en

19-02-2009 16:32

Alain GARDIENNET Alain GARDIENNET

Avez-vous déjà fait des récoltes de Nitschkia c

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helotiaceae ?
michel hurtu, 23-02-2009 20:47
Bonjour à tous :

En forme de coupe ou coussinet ,sessile, 0,2 à 1 mm de diamètre,en troupe sur une petite branche de pin noir.
spores septées 10-12x2,5-3
asques 70x10
paraphyses septées 65x2,5 parfois légèrement enflées au sommet
I+ visible q'après passage dans KOH.
J'avais pensé à Phaeohelotium subcarneum , mais les spores ici sont septées.
merci de votre aide.
michel hurtu
  • message #6800
michel hurtu, 23-02-2009 20:49
Re:helotiaceae ?
suite :
  • message #6801
michel hurtu, 23-02-2009 20:50
Re:helotiaceae ?
l'exipulum :
  • message #6802
michel hurtu, 23-02-2009 20:52
Re:helotiaceae ?
asque :
  • message #6803
michel hurtu, 23-02-2009 20:53
Re:helotiaceae ?
Melzer après passage dans KOH.
  • message #6804
Hans-Otto Baral, 23-02-2009 22:40
Hans-Otto Baral
Re:helotiaceae ?
Hi Michel

that will be very difficult to resolve. First, if you tried to identify with Breitenbach & Kränzlin, that subcarneum there is Hymenoscyphus/Phaeohelotium imberbis.

Yours has a Calycina-type of apical ring and therefore should belong in the Hyaloscyphaceae. Important are the oil drops in the spores which are quite large.

It could be a Calycina. but the only one I have with 1-septate spores on conifer: "Septopezizella" oreadum, has spores with only few small LBs.

Could you please check whether the ring is hemiamyloid (red in Lugol)? And whether the asci have croziers? Further, could you make a mount in water without pressing, in order to see the living asci and especially paraphyses and their contents? Are there any short hairs on the exterior?


Zotto
Stip Helleman, 23-02-2009 23:41
Stip Helleman
Re:helotiaceae ?
Hi Michel & Zotto,
I was thinking about pseudohelotium sordidulum but there are the spores too short, croziers are present for sure, you can tell from the CR photo with 2 CR+ attachment points.

Stip
Hans-Otto Baral, 24-02-2009 00:25
Hans-Otto Baral
Re:helotiaceae ?
yes, Stip, Pseudohelotium is a good idea. But I also can't remember a species with such short spores. Croziers +, yes, clearly!
Zotto
michel hurtu, 24-02-2009 15:01
Re:helotiaceae ?
Thank you Zotto and Stip for your answer.
1. I don't see any hairs with my magnifying glass.
2.Here included the pictures you asked me for.
ascus with Lugol without KOH
  • message #6827
michel hurtu, 24-02-2009 15:07
Re:helotiaceae ?
And now the mount in water without pressing.
Does the fourth picture of the ascus with croziers is enough for you because it is the only one I could see.
michel
  • message #6828
Hans-Otto Baral, 24-02-2009 16:43
Hans-Otto Baral
Re:helotiaceae ?
Hi Michel

fine, the asci are hemiamyloid (nicely red). The paraphyses I am not sure, look a bit like being guttulate. I am not sure that they are still alive because they lie too much over another. Perhaps you should better have slightly squashed, sorry :-(

And I have still not at all an idea about the genus, sorry. If you wish you can send it to me, but I cannot promise anything.

Zotto