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23-10-2024 17:27

Enrique Rubio Enrique Rubio

Hi againThese tiny apothecia (100-200 µm) were gr

06-11-2024 20:07

B Shelbourne B Shelbourne

• Macro and habitat suggest Hymenoscyphus s.l.,

04-09-2024 21:02

Stephen Mifsud Stephen Mifsud

I have found an interesting Xylaria growing on fal

06-11-2024 11:59

Stephen Mifsud Stephen Mifsud

I am trying to identify a Cheilymenia sp. using ke

05-11-2024 18:00

Karen Poulsen

Hello, Can anyone help with this one? On twigs o

20-10-2024 16:48

Albert Meek

Globose sporesca. 16um, with  many drops. On bare

05-11-2024 10:35

Juuso Äikäs

These pale-yellow fruitbodies were growing on core

03-11-2024 17:36

B Shelbourne B Shelbourne

• Macro and habitat suggest Hymenoscyphus s.l.,

04-11-2024 22:58

B Shelbourne B Shelbourne

• Both Erysiphe and Phyllactinia species reporte

04-11-2024 20:28

Malcolm  Greaves Malcolm Greaves

A small group of Scutellinia found on a rotting lo

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Diatrype disciformis on Betula?
Steve Clements, 25-04-2016 09:18
Bonjour, j'ai trouvé cet asco sur le bouleau – c'est comme Diatrype disciformis.
This asco was on a birch twig, and looks like Diatrype disciformis from the microscopy. Spores were deposited as a pale brownish deposit, and were 6-8 x 1-1.5.
Asci were 8-spored, biseriate, tips blueing with Lugol (I think), 40-45 x 5 um.
Perithecia were multitudinous, without long necks.
Small ostioles dotted the stroma surface.
Ellis and Ellis state that this species is occasionally found on birch. I'm hesitant to call it Diatrype disciformis however, as the habit of growth is pulvinate and quite unlike D. disciformis as found on beech ie "erumpent through stellate fissures".
Steve
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Alain GARDIENNET, 25-04-2016 21:13
Alain GARDIENNET
Re : Diatrype disciformis on Betula?

Hi Steven,


And what about Diatrype bullata ? The stroma looks like to be convex.


Alain

Steve Clements, 25-04-2016 21:21
Re : Diatrype disciformis on Betula?

Yes it does look more like D. bullata - which I know quite well. I assumed it was confined to Salix. However in Fungi of Switzerland it is said to occur on other broadleaf species, not just Salix. So I think that this is a better fit for my specimen.
Many thanks,
Merci bien,
Steve