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25-04-2025 22:48

Gustaf Fredell Gustaf Fredell

Hello,I hope everything is going well. I couple mo

18-04-2025 23:16

Robin Pétermann Robin Pétermann

Bonjour, Voici une probable Mollisia, genre que j

24-04-2025 21:35

Thorben Hülsewig

Hi there,last week i could found this asco on an S

25-04-2025 17:24

Stefan Blaser

Hi everybody, This collection was collected by J

25-04-2025 09:33

Josep Torres Josep Torres

Ascomata shaped like deformed black grains, measur

24-04-2025 21:53

Lothar Krieglsteiner Lothar Krieglsteiner

... 15.7.24 in the Alps. There were many asci with

23-04-2025 20:16

Miguel Ãngel Ribes Miguel Ángel Ribes

Good afternoon Looking for Octospores / Lamprospo

24-04-2025 15:03

Henri Koskinen

Hello, I collected this Lasiobolus 22.04. near Hel

23-04-2025 19:58

Francois Guay Francois Guay

I found this interesting Orbilia sp. one year ago

22-04-2025 10:37

François Bartholomeeusen

Also found on April 18, 2025 on an old seed-pod of

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Possibly an undescribed species of Xylaria on olive fruits
Stephen Martin, 04-09-2024 21:02
Stephen MartinI have found an interesting Xylaria growing on fallen drupes of olives which were still immature for a proper morphological examination, however I did sequence it with ITS and LSU and the Lab had suggested that it is closely related to X. palmicola GU322436 and Xylaria sp. ON248209 further adding that it may likely be an undescribed species.

I am writing to see if anyone is interested to examine my specimens and sequences for a possible article (I would be happy to step as a co-author).  The bad news is that I have to recollect more specimens as I only have three left. 

Anyone interested feel free to contact me
  • message #80102
  • message #80102
Stephen Martin, 05-09-2024 15:03
Stephen Martin
Re : Possibly an undescribed species of Xylaria on olive fruits
Apologies for repeated posting, there was something not working well with the forum. I have deleted the repeated posts. My email is info @ maltawildplants.com.
Stephen Martin, 07-09-2024 16:21
Stephen Martin
Re : Possibly an undescribed species of Xylaria on olive fruits
I did a bit of research and had the pleaseure to discuss this with Martin and I am convinced that this is the same Xyaria being reported on fallen and decaying fallen fruit on Olea europaea which many authers are ascribing to Xylaria putaminum.

I have considered this taxon but about 2 yrs ago I was told that this taxon is invalid. Now, with 2-3 recent publications accepting this species , I am not sure why/if it is really invalid. If  X. putaminum/putamina is really invalid, then we are truly with an 'undescribed species'


Recent literature referring to X. putaminum:


Sanches Iglesias (2016) - XYLARIA PUTAMINUM (ASCOMYCOTA, XYLARIACEAE) EN
SEVILLA, SUROESTE DE LA PENÍNSULA IBÉRICA.

La Rosa et al. (2022) - XYLARIA PUTAMINUM (XYLARIACEAE, ASCOMYCOTA), A RARE MEDITERRANEAN SPECIES: FIRST RECORD IN ITALY

Friebes et al. (2024) - Xylaria rohrensis, a new species inhabiting nutshells of
Juglans regia in Austria (see discusion on X. putaminum from a sample on olive fruit vouchered by Fournier from Spain)

Interesting is the similarity with X. palmicola in all papers (op. cit.)


Your opinions are welcome while I am provisionally ascribing my two collections  from Malta as X. putminum

FASTA files available to who wish to analyse the molecular result (ITS and LSU).

Martin Bemmann, 08-09-2024 13:21
Martin Bemmann
Re : Possibly an undescribed species of Xylaria on olive fruits
In the discussion with Stephen I put my finger on the fact that the name X. putaminum is is invalid if one takes the paper of Bertault of 1984 as the first description. A Latin diagnosis was mandatory between 1935 and 2011.

But Bertault treated it not as a new species as he did with others in his paper. Maire's collection housed in MPU is from 1920:


If the label of the voucher would bear a description, the name could be valid.

Does someone has seen the voucher? Gernot?

Best regards

Martin
  • message #80121
Viktorie Halasu, 09-09-2024 10:37
Viktorie Halasu
Re : Possibly an undescribed species of Xylaria on olive fruits
Hello, some more puzzle pieces: 

Maire & Duvernoy presented this Xylaria as a new species on the society's session 6.3.1920, noting the difficulty of finding mature spores despite numerous collections made so far. https://bibdigital.rjb.csic.es/viewer/11119/?offset=#page=38&viewer=picture&o=ocr&n=0&q=olea

The schedae (and notes?) are online on JSTOR, but I don't have the access there: 
Maire's 1920 coll.: https://plants.jstor.org/stable/10.5555/al.ap.specimen.mpuc04535
Bertault's 1961 coll.: https://plants.jstor.org/stable/10.5555/al.ap.specimen.mpub02733

I wonder why "Maire & Durieu". Durieu passed away the same year Maire was born (1878). A later algerian coll. by Maire is labelled only "X. putaminum Maire" : https://www.mycoportal.org/portal/collections/individual/index.php?occid=4846466&clid=0

Best regards,
Viktorie
Martin Bemmann, 09-09-2024 12:38
Martin Bemmann
Re : Possibly an undescribed species of Xylaria on olive fruits
Dear Victorie,

well done! Duvernoy and Maire were partners, collecting and publishing together in Algeria:


Maybe Durieu is misread/misspelled for Duvernoy from a handwritten document?

Regards

Martin
Stephen Martin, 12-09-2024 07:09
Stephen Martin
Re : Possibly an undescribed species of Xylaria on olive fruits
Dear all,
Thanks for you contributions. Seeing that it boils down to these old collections stored on Jstor, I will try to get access to them in the coming days. I have an account with them but still they dont allow me to download the sheets so I had just contacted them.

Will keep you posted
S.
Stephen Martin, 06-11-2024 17:04
Stephen Martin
Re : Possibly an undescribed species of Xylaria on olive fruits
I have acquired these protologoues from JSTOR, hence if someone is interested I can send them for free.