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28-03-2018 13:35

Patrice TANCHAUD

Bonjour,récolte sur Anthoceros agrestis ou puncta

28-03-2018 15:34

Ethan Crenson

Hello all,I found this recently in Brooklyn, NYC.Â

18-10-2017 12:25

Bernard Declercq Bernard Declercq

Hi, Can anyone help me to identify this parasite

27-03-2018 18:39

François Valade François Valade

HelloDoes anybody can help me to find this publica

27-03-2018 11:20

Gilbert MOYNE

Bonjour,Besoin d'aide pour ce petit pyréno (enfin

26-03-2018 21:29

Malcolm  Greaves Malcolm Greaves

I found a rotting Daldinia concentrica with small

26-03-2018 16:46

Michel RIMBAUD

Bonjour,Hier j'ai récolté cette colonie de petit

25-03-2018 10:17

Angel Pintos Angel Pintos

Hello, anybody has:?HOLM, L. 1957. Études taxonom

25-03-2018 21:06

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. http://www.ascofrance.com/search_fo

25-03-2018 19:46

Angel Pintos Angel Pintos

Hello, Does anyone have the following free access

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Asco sur Anthoceros
Patrice TANCHAUD, 28-03-2018 13:35
Bonjour,
récolte sur Anthoceros agrestis ou punctatus. Spores (10)13-16(18) x (3)3,5-4,8(5) µm, sommet des asques sans réaction dans le melzer et le lugol.
Merci d'avance pour vos suggestions.

Patrice

Lothar Krieglsteiner, 28-03-2018 13:52
Lothar Krieglsteiner
Re : Asco sur Anthoceros

Hello Patrice,


for me this has a lot in common with Bryoscyphus dicrani (s.l.) - the substrate is very interesting.


The spore size, form and content is like collections in this group - and the content of the paraphyses is, too.


Best regards from Lothar

Patrice TANCHAUD, 28-03-2018 13:59
Re : Asco sur Anthoceros
Hello Lothar,

I saw B. dicrani like this : http://www.mycocharentes.fr/pdf1/1763.pdf
Spores are bigger.
But you wrote B. dicrani s.l., I understand.
Best regards.

Patrice
Lothar Krieglsteiner, 28-03-2018 14:29
Lothar Krieglsteiner
Re : Asco sur Anthoceros

I don`t know a lot about how many forms are present in this complex. In the pdf you show the name H. rhytidiadelphi is mentioned, too.


I more than once found specimens on Ceratodon purpureus - and I called them H. dicrani by now. You can compare my measures from the small sketch I add.


In once found a specimen on Rhytidiadelphus triquetrus (I also add a sketch) and I then thought this to be H. rhytidiadelphi. But this taxon is considered a synonym of H. dicrani in most literature (as far as I know).


Best regards, Lothar

  • message #52869
  • message #52869
Patrice TANCHAUD, 28-03-2018 14:52
Re : Asco sur Anthoceros
Thanks Lothar, difficult the genus Bryoscyphus, species of this genus remain to be studied, I think.
Hans-Otto Baral, 28-03-2018 16:31
Hans-Otto Baral
Re : Asco sur Anthoceros
Hi Patrice & Lothar

I don't think it is B. dicrani, because

- the spores are distinctly too narrow
- the VBs in the paraphyses are not strongly refractive and especially they are rather large and only in 1-2 rows.

In B. dicrani the VBs are small, strongly refractive, trembling, and multiseriate.

A new riddle. Patrice, do you think your Lugol is good? Because I don't see it on your pics. How sure is it that the asci are inamyloid?

Zotto
Patrice TANCHAUD, 28-03-2018 21:04
Re : Asco sur Anthoceros
Hi Zotto,

OK my lugol is HS, but melzer is perfect (look at my photo of Peziza asci). I try again with melzer x 1000, nothing blue.
You are right Zotto for VBs in the paraphyses wich are bigger, and not strongly refractive because I used contrast of photofiltre to better show them, and x 1000.
  • message #52877
Hans-Otto Baral, 28-03-2018 21:26
Hans-Otto Baral
Re : Asco sur Anthoceros
What is HS? Melzer is always dangerous to use, you overlook hemiamyloidity.


Patrice TANCHAUD, 28-03-2018 21:39
Re : Asco sur Anthoceros
Yes Zotto, very well explained here : http://www.gbif-mycology.de/HostedSites/Baral/IodineReaction.htm
Sorry for HS ("Hors Service" in french) : in english "Out of order".