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28-03-2021 16:20

Przemyslaw Drzewiecki

Hi,03.07.2020; Hardwood in a significant amount of

25-03-2021 13:38

Ismael Wind

On populus i found these largespored ascos. I thin

27-03-2021 17:06

Josep Torres Josep Torres

Hola.Ejemplares recolectados el 21 de Marzo, sobre

28-03-2021 00:33

Paul Whitehead

Could anyone help me identify/find a pathway to id

27-03-2021 09:11

Enrique Rubio Enrique Rubio

Could someone give me a copy of Hayova and Minter'

26-03-2021 20:19

Juuso Äikäs

These I found today, growing on a thin, fallen bra

26-03-2021 21:13

Daniel Ghyselinck

Found on hardwood, plenty of these long necks aris

26-03-2021 11:01

Charles Aron Charles Aron

Hi All, I found these setose perithecia while loo

24-03-2021 12:22

Karl Soler Kinnerbäck

This species was found on a branch of Fraxinus exc

25-03-2021 20:49

Peter Püwert Peter Püwert

Hi, can anyone help ? Thanks. Peter. "J. Gremmen,

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Venturia type
Charles Aron, 26-03-2021 11:01
Charles Aron

Hi All,


I found these setose perithecia while looking at Rihizodiscina lignyota on decorticated Salix cinerea. They are minute (0.05-0.1mm) with apical setae up to about 40 long. The muriform ascospores are 17.5-19x7-8. In Ellis and Ellis there are a number similar Venturia species but with completey different ascospores. I would be grateful for any ideas.


Best wishes,


Charles.

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Nick Aplin, 26-03-2021 11:31
Re : Venturia type
Hi Charles,

Quelle coïncidence!

Our local mycology group is partway through a local Spring Fungi Fortnight and have a identical-looking collection, but on the hymenium of a resupinte basidiomycete (on Ulex):

Partly because of the fungicolous lifestyle we provisionally called it Capronia acutiseta, what do you think?
https://www.sussexfungusgroup.co.uk/capronia-sp

Cheers,
Nick
Charles Aron, 26-03-2021 12:09
Charles Aron
Re : Venturia type

Hi Nick,


Many thanks for the rapid response. It certainly does seem a very good match. Have to say that your micro photos are excellent. Could not find it in either of the Ellis volumes-how did you arrive at this ID? The perithecia (or pseudothecia) seemed just to be seated on the dead wood but may be associated within fungal hyphae within the wood Looking in my files I notice that I had this fungus five years ago in a different location on Anglesey but was not au fait with AscoFrance then! Recently I posted a Nectria type on this forum but that one drew a blank.


Could we have met on any BMS forays?


Best wishes,


Charles.

Nick Aplin, 26-03-2021 12:36
Re : Venturia type
Hi Charles,

I don't think we've met yet, though hopefully our paths will cross one day!

I ran it through Gernot Friebes' excellent key:
https://www.researchgate.net/publication/292919067_A_key_to_the_non-lichenicolous_species_of_the_genus_Capronia_Herpotrichiellaceae

I also used this key to some recently descibed Argentinian species, authored by Andy Miller et al:
https://www.researchgate.net/publication/334570277_New_species_of_Capronia_Herpotrichiellaceae_Ascomycota_from_Patagonian_forests_Argentina

I referred to the original description (available at cyberliber), which I note has several discrepancies, for example the text description of the spores doesn't match well with the illustration with regards to size and septation.
Unfortunately our collection isn't suitable for DNA extraction - How plentiful is yours?

Cheers,
Nick
Paul Cannon, 26-03-2021 15:40
Re : Venturia type
This would be worth comparing with Capronia semi-immersa, which is similar to C. acutiseta but with fewer longitudinal septa in the ascospores. As Nick suggests, sequences from both collections would be ideal...

Best wishes

Paul