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30-05-2026 21:12

Philippe PELLICIER

Sur branche de mélèze (Larix) près de la neige,

25-05-2026 16:35

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,J'ai trouvé récemment,

29-05-2026 15:35

daniel FERRE

Bonjour à tous,Je voudrais votre aide pour cette

28-05-2026 16:15

James Mitchell

Hello,Does anyone have the original publication of

28-05-2026 11:06

Thomas Læssøe

https://svampe.databasen.org/observations/10596750

23-05-2026 11:44

Charles Grapinet Charles Grapinet

Hello, I am having trouble identifying this copro

25-05-2026 16:44

François Bartholomeeusen

Hi forum members,During an excursion organised by

26-05-2026 21:25

Dirk Gerstner

Hello everyone, I'm completely stumped by this li

26-05-2026 22:44

Ethan Crenson

Hi all, I think I have Incrucipulum capitatum her

22-05-2026 14:44

Lothar Krieglsteiner Lothar Krieglsteiner

in unripe condition citrine yellow, then soon fadi

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Urceolella on Epilobium leaves
Marja Pennanen, 11-07-2015 16:54
Hello,

once again Raitviirs study gave me no answer to my determination problem.

These are about 0,2 mm wide and grow on a Epolobium angustifolium leaf.
The spores are about 8-11x2-3 and contain some small droplets.
The asci are about 55-70x10-11 and seemed IKi negative.
The paraphyses are cylindric and about 2-3 wide.
The hairs are with basal lumen, about 20-40x4-5 and tapering.

Hopefully someone here has experience of this species or a newer key to the genera: Marja
  • message #36906
  • message #36906
  • message #36906
Hans-Otto Baral, 11-07-2015 17:30
Hans-Otto Baral
Re : Urceolella on Epilobium leaves
Do you have a photo of the asci too? What about KOH, does it remove the glassiness?
If it doesn't I recommend to hold a flame under the slide untl bubbles appear - to be sure.

Urceolella juniperi = conspicua has larger spores but similar ascus size.

Zotto
Marja Pennanen, 11-07-2015 17:40
Re : Urceolella on Epilobium leaves
Dear Zotto,

I was so thrilled about the hairs, that took only few other photos, luckily some.
The specimen is scanty, so it is not possible to make very many preparates.

Marja
  • message #36913
  • message #36913
Hans-Otto Baral, 12-07-2015 00:05
Hans-Otto Baral
Re : Urceolella on Epilobium leaves
o.k., spores are indeed rather narrow compared to the wide asci even when dead.

And hairs seem to loose glassiness, so indeed Urceolella.

You need to find some more to make Seppo happy :-)
Marja Pennanen, 12-07-2015 20:25
Re : Urceolella on Epilobium leaves
Thank you.

Ooh yes, should I find these more, would make Seppo happy. But trying to find them will not make me happy. These are from our country place and if I have not met them ealier, they must be uncommon.
Phialina species, Phialina pseudopuberula is the present determination, has been common on Epilobium leaves there for years. Seppo's allready got that. Then there is Mollisina propably M. rubi, that occurs on Epilobium, too.

This summer is a bit strange here, it has been raining a lot and there are only few days, when temperature has raised above 20 C.
So, many interesting species have had time to develop.

I'm a bit curious. Is there some connection between paraphyses and moisture? I have had serious difficulties to find paraphyses on many species and it surely has been moist here. Do they occur more when it is dry? Do they protect asci, when times are bad?

Marja