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19-03-2026 18:25

William Slosse William Slosse

Good evening everyone, On 18/03/26 I found a few

19-03-2026 19:34

Filip Fuljer Filip Fuljer

Hello everyone,a few days ago I collected this str

17-03-2026 10:09

François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

19-03-2026 15:58

Stefan Blaser

Hello everybody, I hope for some hints... Macro:

19-03-2026 17:50

Enrique Rubio Enrique Rubio

Hi to everybodyThese thiny, blackish pseudothecia

18-03-2026 13:09

Khomenko Igor Khomenko Igor

I recently examined Celtis occidentalis branches

17-03-2026 19:41

Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,Pourriez-vous m'aider à

18-03-2026 17:22

Katarina Pastircakova

Hi there,I'm looking for the following literature:

19-03-2026 10:56

Thomas Læssøe

https://svampe.databasen.org/observations/10505643

27-02-2026 11:21

Yannick Mourgues Yannick Mourgues

Hi to all. Here is a specie that can may be relat

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Mitrula paludosa (another) from Spain
Luis Ballester, 13-08-2013 19:53
Luis BallesterHello everyone.
Here is another collection of Mitrula from Spain, specifically from La Rioja. In this case the collection consisted of a large number of specimens (about 300), all large and wider than usual. The specimens reached 25 mm width in the clavula and 40x5 mm in the stipe.
Ecology was on Quercus pyrenaica leaves, inside a water stream in the mountains.
The microscopy pictures are of my friend Ruben Martinez and are made only with water. The paraphyses have that curious yellow coloration seen in the photos and sporal measures we have found are 13-24 x 2.7 to 4 µm.
I consulted the works of Redhead and Zheng & alter and from known species we go to Mitrula paludosa. I wonder if all Mitrula we have in Europe are M. paludosa
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Hans-Otto Baral, 13-08-2013 20:18
Hans-Otto Baral
Re : Mitrula paludosa (another) from Spain
Hi Luis

this reminds me of a find by Jens Petersen from Denmark, on Alnus cones but also twigs in a swamp, with very similar spores and paraphyses. The yellow carotenoid pigment is in droplets between long empty vacuoles.

In your photo I think I see a crozier.

Boudier Pl. 427bis has a var. aurantiaca with just this shape.

Zotto
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Luis Ballester, 14-08-2013 10:58
Luis Ballester
Re : Mitrula paludosa (another) from Spain
Thanks Zotto.

Two more photos of the micro
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Hans-Otto Baral, 14-08-2013 11:01
Hans-Otto Baral
Re : Mitrula paludosa (another) from Spain
yes, clearly with croziers.

Possibly all these variants are only paludosa.
Luis Ballester, 14-08-2013 20:39
Luis Ballester
Re : Mitrula paludosa (another) from Spain
OK Zotto, thanks.

That was my (not very skilled) opinion so. Mitrula paludosa. 

But I think Europe is great and I am reluctant to think that each and every one of the collections of Mitrula paludosa found in Sweden, Spain and the Caucasus are genetically the same taxon.
With the knowledge we now have, I think they are all (yes) M. paludosa, but I think when someone makes a study in depth considering the macroscopic, microscopy, ecology and DNA, we will have surprises.

Again very grateful for your comments and looking forward to the future ...
Hans-Otto Baral, 14-08-2013 21:10
Hans-Otto Baral
Re : Mitrula paludosa (another) from Spain
Yes, if someone makes good microscopy. But molecular results are available, and there are five taxa in Mitrula:

 It seems that M. elegans and paludosa are the same. M. brevispora has spores only 5-10 µm. For the others I dod not look at literature.

Here a key to Mitrula by Redhead 1977. The distinction in spore width seems disputable. Interesting the feature of a spore sheath. What flexible spores are I did not understand.
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