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Philippe PELLICIER

Sur branche morte de Mélèze. Les ascospores sphÃ

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Philippe PELLICIER

Apothécies enterrées, fermées au début puis s'

17-09-2025 10:50

Heather Merrylees

Hi there!I am hoping for any advice on the identif

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

16-09-2025 12:53

Philippe PELLICIER

Pézizes de 1-4 mm, brun grisâtres, sur les capsu

03-09-2025 12:44

Enrique Rubio Enrique Rubio

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Nicolas VAN VOOREN Nicolas VAN VOOREN

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14-09-2025 22:16

Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

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Pyreno on Abies
DirkW, 12-02-2014 11:20
DirkWsalut a tous,

in our garden we have an old abies-tree, which is always good for a surprise. on a small fallen twig i found very little, isolated perithecia, smooth, no hairs (0,2mm), half immersed. the spores are attractive and very specific: 4 septa, 2 big oildrops, more hyaline outer cells and a kind of most hyalin, pointed appendix, 22-26 x 8-10. it looks as if chaetosphaerella and anthostomella have mingled together. unfortunately i could not get a clear image of the biseriate asci, but they exist. at least i have no idea about the genus! do you have one?

best

dirk
  • message #27562
  • message #27562
Björn Wergen, 12-02-2014 11:47
Björn Wergen
Re : Pyreno on Abies
Hi Dirk,

it should be Rebentischia unicaudata, which is common on various plant debris, especially Clematis and deciduous wood. I have never senn it on coniferous wood.

regards,
bjrön
Gernot Friebes, 12-02-2014 12:03
Re : Pyreno on Abies
Hi Dirk and Björn,

R. unicaudata has a much longer and narrower, tail-like basal cell though. It should be Rebentischia abietis. You can find a description and photos in: 

Ahn, Y.-m. & Shearer, C.A. (1999). Taxonomic revision of Leptosphaeria vagabunda and four infraspecific taxa. Mycologia 91(4): 684-693 (for R. abietis see pages 686-687: http://www.cybertruffle.org.uk/cyberliber/59350/0091/004/0686.htm)

Best wishes,
Gernot
DirkW, 12-02-2014 12:18
DirkW
Re : Pyreno on Abies
björn and gernot: you're great! rebentischia abietis fits absolutely perfect!
seems to be a rare find ...

best

dirk
Björn Wergen, 12-02-2014 13:38
Björn Wergen
Re : Pyreno on Abies
Of course, you are right Gernot, I did not see whether there are appendages or not, because the quality of the photos made me being unsure about this. I have heard about this species, but I did never see it before (even not here in ascofrance). Probably it is not so rare as believed, we just do not recognize it.

regards,
björn
DirkW, 12-02-2014 17:41
DirkW
Re : Pyreno on Abies
hi björn, i think the appendix is good to see. its 4-6 my long. compared with unicaudata very much shorter. often the appendix is lacking (because of pressure during preparation i think) and then its 4-celled.

best

dirk
  • message #27573
Peter Püwert, 12-02-2014 19:08
Peter Püwert
Re : Pyreno on Abies
Hello in the round,
last weekend we found R. unicaudata on indet. decid. tree. Spores 20-22 x 7-8 µm without caudae, all spores with the conspicuous appendices.
Greetings Peter.
  • message #27576