23-11-2017 17:12
Malcolm Greaves
I took a sample of wood from a rotten stump with S
15-11-2017 23:50
Danny Newman
note cruciate/sulcate ostiolar necks. paraphyses
17-03-2016 09:59
Pascal RIBOLLETBonjour Forum, Voici une récolte qui semble appa
23-11-2017 15:27
Zoltan Lukacs
Hello Everybody,among the scales of pine cone. Do
23-11-2017 18:26
Andgelo Mombert
Bonsoir à tous,Sur branchette de feuillus, en fé
09-11-2017 19:35
Stephen Martin Mifsud
I found this greyish mould with a silvery tinge co
23-11-2017 22:03
Nicolas VAN VOOREN
Je suis très heureux de vous annoncer la parution
22-11-2017 17:32
Pérez del Amo Carlos Manuel
Hola amigos: Encontramos esta Otidea el pasado sÃ
I 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
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.
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
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.
Merci,
Andy
Thanks again
Mal
