Hi Marja

I suppose a Fuscolachnum . Brunnipila is never so small, and has longer hairs which are apically densely septate, also often slightly capitate, usually with crystals.

These are the small asci on your photo, with spores hardly visible. I think Venturiocistella and Fuscolachnum are very close.

Zotto

Dear Zotto,

thank you!
Seems, that I do not find the right genera to look for determination.
Luckily I have a key for Fuscolachnum and F. dumorum may fit.
Got to spend one of the scanty collection to check, weather the hairs fit to the description.

Thankfully: Marja

Hi,
Now I have made another preparate.

This is not F. dumorum.
There are at least two type of hairs, longer near the margin and shorter near the base and on the stipe.
I saw no hyaline marginal hairs, but that does not mean, that they do not exist.
But the hairs are lighter at the top and I saw no septas.
The asci are too small, up to 25x6 and paraphyses exceed asci too much and are too wide.
These are not open, when dry.

So I put: Fuscolachnum sp. on the specimen, when I pack it to my herbarium.

Marja

F. dumorum is specific to Rubus and belongs indeed in Brunnipila, in my opinion. But I wonder why Huhtinen 1985 found only narrowly cylindrical paraphyses in the Phillips material (on Rubus). My collections have broadly lanceolate, strongly protruding paraphyses, as does the type of Desmazieres (drawing in Haines). So did you compare Huntinens drawing of dumorum on Ledum?

F. labradoricum would also be on Ledum but has much too large spores.

Here you can compare, I suppose it is the same species

http://www.ascofrance.fr/search_forum/24429

Chers Tous,

A toute fin utile, vous trouverez une clé du genre Fuscolachnum et des photos et dessins de F. dumorun, en ligne dans les archives du site Ascomycete.org.

Cordialement

René

Dougoud, R.  Quatre discales récoltées sur feuilles de Rubus fructicosus, en photographies et dessins
Ascomycete.org, 3 (1) : 19-23.
Avril 2011

Dougoud R. Clé des espèces du genre Fuscolachnum J.H. Haines
Ascomycete.org, 3 (1) : 24.
Avril 2011

Oh yes, I forgot your nice articles. sorry.

Seems to be a difficult group, but I cannot imagine that a species on Rubus jumps on Ledum and almost nothing else. This and the question about F. dumorum and its relation to Brunnipila would be a nice matter for sequencers.

Zotto

Oh yes, I forgot your nice articles. sorry.

Seems to be a difficult group, but I cannot imagine that a species on Rubus jumps on Ledum and almost nothing else. This and the question about F. dumorum and its relation to Brunnipila would be a nice matter for sequencers.

Zotto

Hello again,

today after rain I went to a place, where I know Ledum palustre to grow.
I picked a lot of these and many other species (two different Lophodermiums, Lachnum, something Cistella-like, Mollisia and some pyrenomycetes) on them, too.
At this moment the species is not rare here. It might be, that nobody has occured to study Ledum leaves this early in the summer. The summer is late here, because of the coldish weather.

Fuscolachnums were open, the hymenium was almost white.
I studied one of the biggest.
The asci were now up to 30 and lanceolate paraphyses exceeded the asci even by 15 and could be wider than the asci.
But I think, that there were cylidric paraphyses, too.
I saw one almost colourless hair, 30 micrometer long.

So, if I got to choose, it is F. misellum.

I will send some to Seppo and hope, that with his equipments all the needed details can be found.

Thank you : Marja

Do you mean F. dumorum? F. misellum is on ferns and has cylindrical paraphyses

Hi Zotto,

Haines tells, that F. misellum is on Rubus fruticulosus and Acer leaves.
Paraphyses should be narrow and only little lanceolate.
Ok, Fuscolachnum cf. dumorum then :D

That Cistellalike I found, need own threat, it is interesting.

But now I need some sleep: Marja

Ah sorry, I am confused.
Well, as stated in the brginning, I would exclude F. dumorum because it has more the characters of a Brunnipila - therefore I have it in my Brunnipila folder. But I may be wrong

Zotto