
16-09-2025 12:53
Philippe PELLICIERPézizes de 1-4 mm, brun frisâtres, sur les capsu

03-09-2025 12:44
Hi to somebody.I would like to know your opinion o

15-09-2025 14:40

Hello.I'm searching for a digital copy of the seco

14-09-2025 22:16
Philippe PELLICIERApothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01
Thomas Flammerdark brown apothecia, splitIKI-Spores biguttulate

10-09-2025 17:18

Hola, encontre este estiercol de vaca estos apotec

13-09-2025 14:10
Wim de GrootWe found this hymenoscyphus on rubus fruticulosis.

11-09-2025 16:57
Our revision of Marthamycetales (Leotiomycetes) is

10-09-2025 23:53

Found on Robinia pseudoacasia together with Diapor

02-09-2025 11:34
Thomas Læssøehttps://svampe.databasen.org/observations/10527903
A couple of colleagues collected a whitish disco from living thalli of the liverwort Marchantia polymorpha (subsp. ruderalis). I think this is Pezoloma marchantiae.
Ascospores lacking guttules with dark spots near the ends (nuclei?). In water, n=20, averaging 8.65 x 4.3. Asci 8-spored, in IKI tips with a faint reddish band.
I have put some photos in the comments below. Please let me know if there is more information that would help to confirm the ID.
Thanks,
George

In case thay may help, you can find here a paper on Pezoloma as well as a key. Sorry I don't get the original publication. I am curious, is this similar to the collection you are sending us in Cambridge?
Cheers,
Edouard
Yes, it is the same. I am wanting to get external confirmation of the ID because P. marchantiae does not seem to have been recorded in the British Isles previously, whereas several people on here are famiiar with it from mainland Europe. Hope the specimen arrives safely!
Will add photos here shortly.
George
I saw your great photos and I think our specimen agrees. The spore lengths I measured were slightly longer, on average, but some may have been overripe. It agrees with the measurements in Benkert 1981.
George
I think that Jessica Nelson's recent (2018-) papers have published sequences of this in NCBI. Though they may not be labelled as P. marchantiae on there, I expect they will return as top BLAST hits.
Thanks and best wishes,
George

Please find the ITS sequence of your collection below.
I am going to submit it to NCBI. It would be great if you could send me the details of the collection (it was written on the samples but I am away from the lab right now) and the name of people involved in collection and identification, so they can get credit. The best hit is KY462822 from Zotto.
>P_marchantiae
CTTGGTCATTTAGAGGAAGTAAAAGTCGTAACAAGGTATCCTTCCACGGA
AGCCTGTGTTCCCGCGACTCTAAATACAGGAGCAAGTAGCTAGAAGCTGC
TACATAATCGAACTGCGGGGATCTCCTAAAGCTCCGGCTACTCCCCTACC
GCTGAAAGGTGGTAGGCACAGTAAGAACGCCGGGGATGCGACAATGGACG
ATCCGCAGCCTAGCCCCTACCGTCGTTGACCACGGGGAAGGTTCACAGAC
TAAGTGATTATGGGTAGGGGTCCCCCCTACTTAAGATATAGTCGGTCGGT
TGGCGAGAGCTGACTGCTAGAGACGTTCCGTAGGTGAACCTGCGGAAGGA
TCACTACAGAGTTCATGCCCTTACGGGTAGATCTCCCACCCTTGAATACT
ATACCTTCGTTGCTTTGGCAGGCCGTGGAAACACCACCGACCCCGGCTAG
TGCGTGCCTGCCAGAGGAAACACAACTCTGTCTTTAGTGATGTCTGAGTA
CTATATAATAGTTAAAACTTTCAACAACGGATCTCTTGGTTCTGGCATCG
ATGAAGAACGCAGCGAAATGCGATAAGTAATGTGAATTGCAGAATTCAGT
GAATCATCGAATCTTTGAACGCACATTGCGCCCCGTGGTATTCCGCGGGG
CATGCCTGTTCGAGCGTCATTTCAACCAATCAAGCCTAGGCTTGGTCTTG
GGTTTGCGGTCTTTCGCACTCCCTAAACTTAGTGGCGGTGCGACTGAGCT
CTGAGCGTAGTAATTCTTCTCGCTATAGGGTCTTGGTCGTGACTTGCCAG
CAACCCCCTCTTTTTATCAGGTTGACCTCGGATCAGGTAGGGATACCCGC
TGAACTTAAGCATATCAATAAGCGGAGGA
Best wishes,
Edouard
Great, thank you! Good to see that hits 2-4 (>99%) are Jessica Nelson's "Leotiomycetes sp. 1", which was also P. marchantiae collected from fruitbodies but not identified at the time. Nice to get confirmation.
I have attached a photo the collectors' details and the rest of the voucher information, including UK grid reference. Sorry it is a bit blurry. ID was suggested by me and supported by Enrique Rubio on here.
Thanks again and let me know if you need any other details.
George




Edouard