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28-07-2011 18:31

Alex Akulov Alex Akulov

Dear FriendsToday I made the pdf file of Velenovsk

26-03-2024 17:14

Juuso Äikäs

These little black ascos were growing on a dead, d

27-03-2024 22:53

Charles Aron Charles Aron

Hi All,Recently I came across these minute, setose

25-03-2024 13:41

B Shelbourne B Shelbourne

• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a

25-03-2024 21:27

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2024

26-03-2024 14:37

DAVID MARCOS DAVID MARCOS

Spores (telles qu'elles apparaissent à l'intérie

24-03-2024 08:27

Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-03-2024 11:06

michel bertrand

Bonjour, Malgré de nombreuses recherches, je n'a

25-03-2024 14:08

Ursula Kozik

Bonjour et bonne journée, On m'a envoyé une tro

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B Shelbourne B Shelbourne

• Scuttelinia: Macro and habitat.• S. scutella

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Problematic yellow asco?
Mirek Gryc, 20-05-2020 10:57

Hello all.
I found two collections of this genre yesterday. The first grew on dead shoots Reynoutria japonica. A second group of fruiting bodies found on Helianthus tuberosus. There are small differences between them in the content of drops in the spores but I suspect it is the same species.
The first thought is Cyathicula. The size of the spores matches C. cyathoidea but as you can see the other features are not.
I was also thinking about Hymenoscyphus repandus, which I do not know yet, but it seems to me that the characteristics do not suit him too?
greetings
Mirek
PS: photos in a moment
Mirek Gryc, 20-05-2020 11:00
Re : Problematic yellow asco?
The first collection from Reynoutria japonica
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Mirek Gryc, 20-05-2020 11:01
Re : Problematic yellow asco?
Second collection from Helianthus
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Hans-Otto Baral, 20-05-2020 11:13
Hans-Otto Baral
Re : Problematic yellow asco?
Hi Mirek

does your 7th pic show a blue reaction of the excipulum?

Not sure if the two are the same as the paraphysis contents and curvature differ.

I think a Hyaloscyphaceae s.l.

Zotto
Mirek Gryc, 20-05-2020 11:31
Re : Problematic yellow asco?
Hi Zotto

Yes, the blue excipulum reaction is seen in the picture.

The reaction occurred only in one fruiting body. Also, I see several differences between them although the macroscopic features are identical.
I have no idea.
Mirek
Hans-Otto Baral, 20-05-2020 11:49
Hans-Otto Baral
Re : Problematic yellow asco?
The currved paraphyses of the first remind me a bit of Loricella in my Calloriaceae folder. I cannot clearly see the margin for any hairs.

A blue reaction occurs e.g. in Cistella grevillei or Psilachnum lanceolatoparaphysatum, but all these are probably outruled.
Mirek Gryc, 20-05-2020 12:04
Re : Problematic yellow asco?
The problem is that I haven't seen the hair either. Neither in one nor in the other collection.
Thank you, Zotto.
I will search in the catalogs you suggest.
Mirek