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10-05-2008 21:56

NC NC

Bonsoir à tous. Beaucoup de récoltes ces dernie

07-05-2008 13:47

Alain GARDIENNET Alain GARDIENNET

Un asco bituniqué immergé dans Robinia. Asques

05-05-2008 21:41

Jean Pierre Dechaume Jean Pierre Dechaume

Espèce de pézize, de 1-2 mm, d'abord en bouton,

02-05-2008 10:13

Alain BRISSARD

Bonjour à tous Trouvés sur un rameau mort de Ma

01-05-2008 16:58

Félicien Corbat

Bonjour, Je ne suis encore qu'un novice des asc

29-04-2008 22:50

NC NC

Rebonsoir, c'est un nouveau sujet, mais dans la c

29-04-2008 08:50

Alain GARDIENNET Alain GARDIENNET

Bonjour, Bien que non habitué du genre, je voula

29-04-2008 07:12

Alain GARDIENNET Alain GARDIENNET

Bonjour à tous, Il y avait à Melle un épicéa

28-04-2008 22:50

ANGELOS PAPADIMITRIOU

Hi. This Scutellinia sp. was found a few days a

27-04-2008 18:34

NC NC

Bonjour à tous, Sur Hypoxylon mort , des petits

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Hymenoscyphus with squarrulose stem
Edvin Johannesen, 19-09-2023 22:57
Edvin JohannesenIn Tilia, Quercus, Corylus forest on calcareous soil in Oslo region, Norway. On dead deciduous wood (twig). Stems of apothecia brown-squarrulose. Spores 15(-17)x(3.5-)4(-5) micr, multiguttulate with an aguttulate central region, eventually becoming 1-septate. Paraphyses multiguttulate, ca. 8 micr. across. Asci 8-spored, IKI- (Lugol). Can Hymenoscyphus have a stem like this?
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Edvin Johannesen, 19-09-2023 22:58
Edvin Johannesen
Re : Hymenoscyphus with squarrulose stem
Images in water.
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Hans-Otto Baral, 20-09-2023 09:41
Hans-Otto Baral
Re : Hymenoscyphus with squarrulose stem
IKI- I would not believe, are you sure? It reminds me of H. virgultorum as I interpret that species. I think characteristic are the spores with only small LBs. Croziers should be absent in that species.
Edvin Johannesen, 20-09-2023 11:55
Edvin Johannesen
Re : Hymenoscyphus with squarrulose stem
Thanks, Zotto. I expected you would not believe it. I was surprised myself. I will check again. Is this type of stem typical/common in H. virgultorum? I did not see croziers, correct.
Hans-Otto Baral, 20-09-2023 11:58
Hans-Otto Baral
Re : Hymenoscyphus with squarrulose stem
I think in H. scutula can it occur as well as in H. macroguttatus, though perhaps not as prominent as in your find. Anyway I doubt if it is constant.
Edvin Johannesen, 20-09-2023 12:25
Edvin Johannesen
Re : Hymenoscyphus with squarrulose stem
You were of course right. I tested with Baral'sche Lösung and I see a weak blue ring/pore in some asci. I wonder if my Lugol has lost its potency. What is your experience with this? It is stored in a tiny dark brown bottle, but it's several years old (I don't do ascos every day).

Thanks again!
Hans-Otto Baral, 20-09-2023 12:43
Hans-Otto Baral
Re : Hymenoscyphus with squarrulose stem
You see it at the colour, it must be brown in a hyaline bottle, not pale yellow.
Edvin Johannesen, 20-09-2023 13:08
Edvin Johannesen
Re : Hymenoscyphus with squarrulose stem
OK. Yes there is a distinct colour difference between the Baral'sche and the Lugol bottle.