04-01-2025 16:08
Robin Isaksson
Hi!Anyone that has this one: Lowen, R. 1989. Two n
01-01-2025 13:45
Enrique Rubio
THESE BLACKISH ASCOMATA WERE SEMI-IMMERSED IN A HA
01-01-2025 11:35
Marc Detollenaere
Dear Forum,On rotten wood of Fraxinus excelsior I
02-01-2025 17:05
Jean-Luc Rangerje ne trouve pas de correspondance pour cette form
31-12-2024 15:39
Jean-Paul Priou
Tout d'abord, meilleurs voeux de bonne santé à t
30-12-2024 23:57
Robin Isaksson
Hi! This one i have hard to find anything on. Does
31-12-2024 15:12
Bernard CLESSE
Bonjour à toutes et à tous,Pourriez-vous me conf
?Rhytidhysteron on Olearia
Zuidland Peter,
19-01-2022 02:24
I have found this erumpant only on Olearia bush branches over the past few years and I would love some help to get to know what it might be. Might it be Rhytidhysteron?
Spores are hyaline, have up 1-3 septa with sizes 22-32.7 x 9.3-11.7um
Paraphyces: filiform, branching with undulating ends.
Asci: Lugol's -ve, Cr -ve.
Victoria, Australia
Thanks Pete
Hans-Otto Baral,
19-01-2022 07:46
Re : ?Rhytidhysteron on Olearia
Rhytidhysteron has always brown spores. The apos lookk hairy, do they?
Would be good to get an idea of the excipulum (best in section) and the marginal hairs if there are some. Any KOH-extruding pigment?
The iodine reaction could be negative but I cannot see it for sure. Seems the apical ring does not expand on killing, but also this is not sure. Do you have immature dead asci on a photo?
Zuidland Peter,
22-01-2022 05:43
Re : ?Rhytidhysteron on Olearia
Many thanks for taking the time Hans-Otto,
It had been ID'ed as this genus and maybe Velutarina 1-2 years ago by Bjorn Wergen but only immature spores. I have been through your database and cannot find anything similar.
In the previous pics, other than Lugol's the mounting was in water.
KOH provides a reddish brown exudate.
I have a very limited supply of MLZ and in this case -ve.
Very poor images of excipulum, I hope you can make sense of the pics I send of what looks like some; sample was very poor to handle after rehydration.
Again many thanks for looking at this specimen.
Pete
It had been ID'ed as this genus and maybe Velutarina 1-2 years ago by Bjorn Wergen but only immature spores. I have been through your database and cannot find anything similar.
In the previous pics, other than Lugol's the mounting was in water.
KOH provides a reddish brown exudate.
I have a very limited supply of MLZ and in this case -ve.
Very poor images of excipulum, I hope you can make sense of the pics I send of what looks like some; sample was very poor to handle after rehydration.
Again many thanks for looking at this specimen.
Pete
Zuidland Peter,
22-01-2022 05:58
Re : ?Rhytidhysteron on Olearia
The yellow downy edge consists of mostly granular material and interwoven fibres/?hairs.
Pete
Pete
