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31-10-2025 09:19

Lothar Krieglsteiner Lothar Krieglsteiner

Can somebody provide me with a file of:Rogerson CT

30-10-2025 03:53

Ethan Crenson

Hi all,  I would like an opinion on whether this

09-08-2025 13:13

Maria Plekkenpol Maria Plekkenpol

Hello,Yesterday I found these on burnt soil. Apoth

28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

29-10-2025 19:02

Castillo Joseba Castillo Joseba

De la pasada semana en rama posiblemente de hayaPi

25-11-2016 13:54

Stephen Martin Mifsud Stephen Martin Mifsud

Hi, I found numerous seeds of Washingtonia robusta

28-10-2025 22:22

Bernard Declercq Bernard Declercq

Hello.I'm searching for the following paper:Punith

27-10-2025 19:51

Peter Welt Peter Welt

Who has this article? Doveri, F. 2007. Sporormiel

28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

28-10-2025 11:29

Tanja Böhning Tanja Böhning

Hello, I found this very small (ca 0,5mm) yellow

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Bisporella citrina??
William Slosse, 09-02-2016 20:32
William Slossegrowing on fallen dead branches of birch in old dunearea.
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Hans-Otto Baral, 09-02-2016 20:51
Hans-Otto Baral
Re : Bisporella citrina??
I think it is Calycina (earlier Bisporella) clariflava (= Bisporella sulfurina)

If you check the iodine reaction it should be negative. C/B. citrina has larger spores and amyloid asci.
William Slosse, 09-02-2016 21:43
William Slosse
Re : Bisporella citrina??

Thx for your reaction, Hans-Otto.


I'm new on this forum, but very pleased with this quick response.


I have still a fresh specimen in collection and I will check the reaction with Meltzer's reagens.


I found not a (good) key to convince me if it's citrina or sulfurina so I thought why not putting the question on this forum.


Nice to become some very interesting information from experts.

Hans-Otto Baral, 09-02-2016 21:54
Hans-Otto Baral
Re : Bisporella citrina??
You could also try to check the ascus base: citrina with croziers, claroflava without, but it is not easy.

Btw, it is better to use Lugol/IKI for testing ascus reactions.
http://invivoveritas.de/articles/iodine-reaction-in-ascomycetes-why-is-lugols-solution-superior-to-melzers-reagent/

best regards
Zotto
William Slosse, 09-02-2016 22:35
William Slosse
Re : Bisporella citrina??

The habitus of croziers is indeed for me something difficult to recognize.


I detected following structure while searching for asci etc. Can this be a crozier?

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Hans-Otto Baral, 09-02-2016 22:42
Hans-Otto Baral
Re : Bisporella citrina??
no, but on the left of your pic I see a bit unsharp that croziers are absent (asci are "simple-septate").
William Slosse, 09-02-2016 22:52
William Slosse
Re : Bisporella citrina??
Thx for all your info, Hans-Otto, very instructive for me!