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17-11-2021 12:02

Literature on Hysteriaceae
Enrique Rubio Enrique Rubio

Could someone please send me a copy of the followi

15-11-2021 22:02

nectrialike asco on remnants of pyrenomycetes
Aafke Buijs

Hello,Last week I found on hardwood small, dull or

12-11-2021 17:07

Hypocreales sp.
Bernard Declercq Bernard Declercq

Hi there,Recently collected parasitic fungus on Tr

15-11-2021 23:56

Calycina citrina vs. confluens, ecology
Viktorie Halasu Viktorie Halasu

Hello forum,I would like to ask, what is your expe

15-11-2021 16:37

Hymenoscyphus on Rubus
Chris Yeates Chris Yeates

Bonjour Continuing my work on fungi on Rubus I re

14-11-2021 15:59

Yellow-brown cup with ionomidotic reaction
Ethan Crenson

Hello all, Found recently in New York.  These sm

15-11-2021 11:19

Perilachnea flavobrunnea
Savic Dragisa

Hi to allThe first time i see them, i hope i wasn'

15-11-2021 07:14

Cordyceps?? on beetle larva.
Zuidland Peter

Hello all,Here is a new parasitic fungi for me on

14-11-2021 17:27

Small whitish cups on wood - Hymenoscyphus?
Lepista Zacarias

Hi everybody,In a recent field trip to the Park in

14-11-2021 15:47

Rubus fruticosus disco
Chris Yeates Chris Yeates

Bonjour tous I have been doing some collecting on

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Rutstroemia-like, but not quite
Edvin Johannesen, 24-11-2021 22:28
Edvin Johannesen
Apothecia on twigs from a deciduous tree (Central Norway), 3-5 mm in diameter, short-stalked. Outside somewhat "scurfy", stalks short, pale, but darker towards the base. No sign of stromatised host tissue. Asci IKI+ (blue in Lugol), 110-120 x 12-13 mcr, spores 16-18 x 4-5 mcr, with two or three guttules plus some smaller. Paraphyses filiform, 1.5-2 mcr broad. Excipulum I guess is textura intricata. I was expecting Rutstroemia, but don't find a match. There doesn't seem to be any sign of dark lines in the host tissue.  Are there some kind of resin in the hymenium?

Photos of re-wetted material. All measures in water.

Suggestions appreciated. Thanks
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Peter Püwert, 24-11-2021 22:48
Peter Püwert
Re : Rutstroemia-like, but not quite
Hi, looks like Rutstroemia firma ?

Regards Peter.
Edvin Johannesen, 24-11-2021 23:10
Edvin Johannesen
Re : Rutstroemia-like, but not quite
That's what I thought initially. I checked images of the differet forms in Zotto's folder and I thought the spores were too narrow. No septa or budding seen, but that may because the spores aren't mature, I guess. This is collected in a spruce forest in Central Norway (but on deciduous wood), so Quercus and Fagus is out of the question. Betula or Salix most probable substrate.

Thanks.
Peter Püwert, 25-11-2021 00:42
Peter Püwert
Re : Rutstroemia-like, but not quite
Yes, probable immature. And there are also references in literature on Alnus, Betula and Corylus.

Regards Peter.