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18-07-2025 23:03

Help with some conidia.
Josep Torres Josep Torres

Hello.Fruitings between 51 and 130 microns in tota

17-07-2025 11:55

Una para ID 833
Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y abetos, en tieraEjemp

16-07-2025 17:34

Sphaerulina cornicola versus Septoria cornina
Bernard Declercq Bernard Declercq

Hello,I have trouble distinguishing above mention

14-07-2025 11:20

Une hélotiale sur Sphagnum palustre
Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

15-07-2025 13:27

literature request
Angel Pintos Angel Pintos

Hello, does anyone have access to the following ar

16-01-2023 21:31

Troposporella fumosum => Troposporella monilipes
Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Hypoxylon cf ticinense
Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Jackrogersella minutella VS Hypoxylon cohaerens var. microsporum
Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Olla aff. millepunctata (croziers +) on Rubus idaeus
Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Rutstroemia ulmariae(?) on Saxifraga rotundifolia
Gernot Friebes

Hi,do you think this collection could be R. ulmari

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On Epilobium-not asco
Marja Pennanen, 31-01-2023 17:07
Hello folks,

I have found these brown ones (~1cmx0,5cm) on Epilobium for years. Now I finally looked, what  their microscophy looks like. Well, it looked brown and big, about 45-70+ x10-14.

Hopefully someone here knows, what these are, so I do not have to start trying to find a key for something like this.

Winter greetings: Marja
  • message #75036
  • message #75036
Björn Sothmann, 31-01-2023 17:10
Björn Sothmann
Re : On Epilobium-not asco
Hi Maria,

this is a rust fungus with two-celled teliospores. Do you know which Epilobium species this is precisely? Can you check if the spore walls are smooth or finely warted (hardly visible)

Björn
Marja Pennanen, 31-01-2023 17:46
Re : On Epilobium-not asco
Hi Björn.

it seems to be nowadays Chamaenerion angustifolium, but was Epilobium, when I learned the latin name.

I have found these in spring

Marja

After writing the text above, I went and looked. There seems to be warts on the surface.

Is it Puccinia gigantea?
Björn Sothmann, 31-01-2023 18:16
Björn Sothmann
Re : On Epilobium-not asco
Hi Marja,

I have never found P. gigantea myself, but comparing to the descriptions in Klenke&Scholler and Gäumann, I have little doubt that your find is indeed this species.

Björn
Marja Pennanen, 31-01-2023 18:26
Re : On Epilobium-not asco
Hi Björn,

what is the title of the source you mentioned and how may someone, who is a bit interested also in rust fungies, get it in her hands or computer?

Curiously: Marja
Björn Sothmann, 31-01-2023 18:47
Björn Sothmann
Re : On Epilobium-not asco
Hi Marja,

You can find the book by Gäumann online at the ETHZ website: https://www.e-periodica.ch/digbib/view?pid=cry-001%3A1959%3A12#4 Unfortunately, it is avaialble in German only but contains a lot of very nice drawings of spores. The book by Klenke and Scholler is "Pflanzenparasitische Kleinpilze" and German as well. It consists of keys only that are arranged according to host plant genera.

Best,

Björn


Marja Pennanen, 01-02-2023 09:36
Re : On Epilobium-not asco
Thank you Björn, vielen danke!

Wau, that opus is huge!

I have a feeling, that Puccinia gigantea is more common in northern Finland than here in eastern Finland. At least last spring I saw them in Lapland at least as many, than I have found here altogether

Marja