Accès membres

Mot de passe perdu? S'inscrire

24-04-2024 21:54

Lasiobolus macrotrichus
éric ROMERO éric ROMERO

Bonjour, J'ai trouvé ce Lasiobolus sur laissées

23-04-2024 15:18

out of topic - peculiar unripe fungus, not an ascomycete
Lothar Krieglsteiner Lothar Krieglsteiner

... but likely a basidiomycete. I hope it is o.k.

23-04-2024 13:17

Ascobolus foliicola
Edouard Evangelisti Edouard Evangelisti

Bonjour à tous, Je viens de récolter ce que je

23-04-2024 21:49

Byssonectria (?) Pyronemataceae from Eastern US
Ethan Crenson

Hello all, A friend recently found this orange as

22-04-2024 11:52

Microstoma from South Korea
Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I made a loan of a collection of Microstoma

11-01-2022 16:36

Literature request: Raitviir (2004) Revised synopsis of Hyaloscyphaceae?
Jason Karakehian Jason Karakehian

Hi does anyone have a digital copy of Raitviir A (

22-04-2024 08:54

Spores inconnues
Rafael Cabral

Bonjour à toutes et tous, Quelqu'un pourrait-il

22-04-2024 20:38

Anamorph on Erica arborea 170424 670 from Madeira
Miguel Ãngel Ribes Miguel Ángel Ribes

Good afternoon.Does anyone know this anamorph?It g

21-04-2024 14:29

Brunnipila brunneola
B Shelbourne B Shelbourne

• Genus Brunnipila: Distinct macro and habitat,

19-04-2024 14:28

Cudoniella tenuispora
B Shelbourne B Shelbourne

Cudoniella tenuispora: Distinctive macro and habit

« < 1 2 3 4 5 > »
Cercophora (Immersiella) caudata?
Malcolm Greaves, 23-11-2017 17:12
Malcolm GreavesI took a sample of wood from a rotten stump with Scutellina on and came across these Perithicia. The were black c0.6mm x 0.4 mm. The spores were initially cylindrical 50µ long excluding the a small appendage at each end . Maturing with one swollen (septate?) cell. The asci have a small droplet at the apex.
I have included a photo of what might be hairs but not sure.
Is this Immersiella caudata.
Thanks
Mal
  • message #51279
  • message #51279
  • message #51279
  • message #51279
  • message #51279
Michel Delpont, 23-11-2017 20:22
Michel Delpont
Re : Cercophora (Immersiella) caudata?
Good evening Malcolm.

We do not distinguish well the hairs, are they grouped, only at the top or distributed; are they pointed or obtuse? Can you measure the appendages at the ends of the spores and the dark cell above the septum. Also it can be useful to make a cut to observe the wall.


Michel.

Malcolm Greaves, 23-11-2017 22:01
Malcolm Greaves
Re : Cercophora (Immersiella) caudata?
Hello Michel
The dark "hairs" appear to be just at the top of the Perithicia and are very short thick walled and obtuse. The immature spores are c 50µ long with the small appendage of 5µ at each end. I have struggled to find any fully mature spores (other than the ones on the Scutellinia slide which was binned) but the odd one I have found with a dark swollen end was measured at 17 x 10. I have prepared slides of a few perithecia but none so far have had mature spores but I will try overnight so gather some.
Does that help at all?
Mal

  • message #51285
  • message #51285
Andrew N. Miller, 24-11-2017 16:17
Andrew N. Miller
Re : Cercophora (Immersiella) caudata?
This is Immersiella caudata.  Note the short projections (hairs) from the neck.

Andy
Michel Delpont, 24-11-2017 20:36
Michel Delpont
Re : Cercophora (Immersiella) caudata?
Good evening Andy.

I was not sure about C.Caudata because the perithecia do not seem to be immersed and I could not really distinguish globules (smooth or more or less ornate).


Thank you.


Michel.

Andrew N. Miller, 24-11-2017 20:45
Andrew N. Miller
Re : Cercophora (Immersiella) caudata?
Ascomata of I. caudata begin as immersed, but I have seen them become erumpent to superficial with age.  The type of wood is really distinctive for this species - it is always very light, loose wood that almost falls apart - never hard.  I see a globule in the ascus apex, but I do not believe in globules being smooth or ornamented.  All globules are more or less smooth, but sometimes cytoplasmic material in the asci make the globules look ornamented.  Just my opinion.

Merci,
Andy
Malcolm Greaves, 25-11-2017 10:34
Malcolm Greaves
Re : Cercophora (Immersiella) caudata?
Michel and Andrew. Thanks for the response. The perithecia were immersed but I decided the photo of just the apex would not have been helpful so dug it out of the very soft rotten wood. From what you have said this does seem a good fit for C. caudata. The dementions of spores expelled on to a slide are shown in the photo.
Thanks again
Mal
  • message #51310