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09-11-2025 13:20

Josep Torres Josep Torres

Hello.A tiny ascomycete, appearing as erupting gra

08-11-2025 12:10

Elisabeth Stöckli

Bonjour, Trouvé sur tiges mortes de Rubus (ronce

08-11-2025 00:29

Francois Guay Francois Guay

I found this species in Quebec, Canada, on herbace

04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

08-11-2025 09:15

Michel Hairaud Michel Hairaud

Bonjour, Pouvez vous m'aider à identifier ce Mol

06-11-2025 16:50

Rot Bojan

Hello! Yesterday I found a fungus on or near a nee

05-11-2025 11:33

Pierre Repellin

Bonjpur,J'ai trouvé, sur une hampe florale d'Alli

04-11-2025 09:07

Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 12:43

Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

03-11-2025 21:34

Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

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Venturiocistella on Rhododendron tomentosum leves
Marja Pennanen, 21-09-2016 15:54
Hello again,

once again Raitviir gave no answer to my determination trials.

Among other ascos on Rhododendron tomentosum (former Ledum palustre) leaves I noticed some with dark setas.
The setas are up to 300x4-7.
The brown hairs are 25-45x4-8 and asci 25-36x5-6.
So, Venturiocistella venturioides is close, just that the spores are too big, 13-17x2.
Suggestions?

Marja



  • message #45019
  • message #45019
Hans-Otto Baral, 21-09-2016 17:08
Hans-Otto Baral
Re : Venturiocistella on Rhododendron tomentosum leves
I fear it would be difficult for Ain to give you an answer.

But also for me, it seems to be a new species. Something for Timo.

Zotto
Kosonen Timo, 21-09-2016 21:00
Kosonen Timo
Re : Venturiocistella on Rhododendron tomentosum leves

Hello Marja and Zotto,


That's something. We are on a foray until the end of September. Atleast Venturiocistella diversipila is a very lazy shooter, so if you fancy sending material to Stockholm and the population is big enough you could, for a change, dry it and send it. I'll rehydrate it, and if it fails to shoot I can probably squeeze atleast ITS out of dry material.


Timo


 


Timo Kosonen c/o Karen Hansen


Naturhistoriska riksmuseet


Box 50007
104 05 Stockholm


 

Marja Pennanen, 23-09-2016 08:42
Re : Venturiocistella on Rhododendron tomentosum leves
Hi Zotto, Timo,

thak you Zotto for your opinion and giving me a good laugh. I naturally ment Raitviirs opus ;) What a pitty, that I had not the pleasure to meet him.

Timo, the collection was very scanty being collected just accidently among other things, few apos, from sunday and still in fridge. So, I see no point of delivering the propably ruined ones anywhere.

Marja