Accès membres

Mot de passe perdu? S'inscrire

17-01-2026 19:35

Arnold Büschlen

Hallo, ich suche zu Cosmospora aurantiicola Lite

15-01-2026 15:55

Lothar Krieglsteiner Lothar Krieglsteiner

this one is especially interesting for me because

16-01-2026 00:45

Ethan Crenson

Hi all, On decorticated hardwood from a New York

18-01-2026 12:24

Josep Torres Josep Torres

Hello.An anamorph located on the surface of a thin

17-01-2026 10:41

Blasco Rafael Blasco Rafael

Hola, he descubierto que he creado una Pulvinula t

08-12-2025 17:37

Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

16-01-2026 11:20

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia (España) 

10-01-2026 20:00

Tom Schrier

Hi all,We found picnidia on Protoparmeliopsis mur

13-01-2026 07:28

Danny Newman Danny Newman

Chlorociboria glauca on indet. decorticate logThe

15-01-2026 10:35

Johan Boonefaes Johan Boonefaes

Last week I found this fungus, possibly a hyphomyc

« < 1 2 3 4 5 > »
Psilachnum again
Juuso Äikäs, 06-06-2020 07:19
These were growing on a dead, fallen stem of Filipendula ulmaria together with Ollas and Trichopezizellas. Ammonia fumes turned the apos reddish orange. 

Asci with eight spores. Spore measurements: 

(6.7) 7.2 - 8.2 (9.1) × (1.8) 1.81 - 2.1 µm
Q = (3.5) 3.6 - 4.27 (4.3) ; N = 10
Me = 7.8 × 2 µm ; Qe = 4

Fungi of Temperate Europe mentions that P. rubrotinctum should have four spores per ascus. But asco-sonneberg.de says eight and in centrodeestudiosmicologicosasturianos.org the asci also seem to have eight spores. When I examined the sample the spores seemed to be in two rows and sometimes gave the impression of 4-spored asci. So... could this be P. rubrotinctum or is there another possibility?
  • message #63571
  • message #63571
  • message #63571
  • message #63571
  • message #63571
  • message #63571
  • message #63571
  • message #63571
Hans-Otto Baral, 06-06-2020 08:00
Hans-Otto Baral
Re : Psilachnum again
Surely this is P. rubrotinctum. I also saw it only 8-spored (see my folder, I have it for the moment in Cistella, Hyaloscyphaceae).

There exists a very similar large-spored species (12-16 x 2,2-3 vs. 6-10 x 1.4-2.2) without a name, and only from this exist sequences as far as I know.

What is Fungi of Temperate Europe?
Juuso Äikäs, 06-06-2020 08:24
Re : Psilachnum again
Alright, thanks again! Fungi of Temperate Europe is a new, large 2-part book by Thomas Laessoe and Jens H. Petersen that contains thousands of species of fungi of all kinds, including a fairly nice amount of little ascos. I've been using it recently to help with identifications. 

The book mentions this being a nemoral species and the northernmost finding on GBIF website is from middle UK. I didn't find the species in the Finnish list of species (at least with this name). Maybe this is a fairly northern finding.
Hans-Otto Baral, 06-06-2020 08:40
Hans-Otto Baral
Re : Psilachnum again
Ah, sorry, we have that book actually, but as we are not at home this week it was out of my scope.

Strange about this mention of 4-spored asci.