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Bryophilous Helotiales on Riccia cilifera
Koszka Attila,
03-02-2020 13:55
I could not identify this tiny rose discoid thing with no stipe.
Does anybody have some experience with this?
Thanks: Attila
Hans-Otto Baral,
03-02-2020 15:01
Re : Bryophilous Helotiales on Riccia cilifera
I do not know at all but there are a few questions:
Could you study the excipulum?
Iodine reaction seems negative?
Are there any paraphyses?
Do you still have it fresh and could make a water mount without pressing? Living asci and paraphyses could be helpful.
Your beforelast photo seems in water, do you also have a photo at high magnification showing the septum in vivo?
Size of apos is around 0.5 mm?
Zotto
Hans-Otto Baral,
05-02-2020 11:16
Re : Bryophilous Helotiales on Riccia cilifera
I asked Peter Döbbeler and he suggested it could be Pachydisca amoena:
Only the spores are given shorter and no septum is mentioned.
Zotto
Koszka Attila,
06-02-2020 12:03
Re : Bryophilous Helotiales on Riccia cilifera
Sorry for this late ansver, but I was busy in this week.
Unfortunatelly I have not study the excipular part.
Iodine reaction seems mainly negative, but perhaps
wery weakly positive in some immature ascus.
Paraphyses is thin, long-cylidrical, with slightly broad an rounded tips, no pigment bodies.
I cannot have it in fresh, but the collection place where I found it, is exacly known.
The fruiting bodies is 0,1-0,5 mm, resting stalkless near the side and near the base side of the moss-leaves.
It seems to me, that the spores become septate only in the fully mature ascospores.
Attila
Unfortunatelly I have not study the excipular part.
Iodine reaction seems mainly negative, but perhaps
wery weakly positive in some immature ascus.
Paraphyses is thin, long-cylidrical, with slightly broad an rounded tips, no pigment bodies.
I cannot have it in fresh, but the collection place where I found it, is exacly known.
The fruiting bodies is 0,1-0,5 mm, resting stalkless near the side and near the base side of the moss-leaves.
It seems to me, that the spores become septate only in the fully mature ascospores.
Attila
Hans-Otto Baral,
06-02-2020 15:06
Re : Bryophilous Helotiales on Riccia cilifera
Thanks for more details. The matter with spore septation requires living asci, it is frequently misunderstood or differently defined. My definition of maturity is: freshly ejected spores. Which they are you can only decide if you have living asci.