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21-04-2026 21:00

Sylvie Le Goff

Bonjour à tousJe sollicite votre aide pour cet as

21-04-2026 13:36

Gernot Friebes

Hi,I am out of ideas for this one. I collected Sal

21-04-2026 13:19

Gernot Friebes

Hi,this Lophodermium on Typha has ascospores measu

21-04-2026 13:05

Gernot Friebes

Hi,this hyphomycete feels familiar but I was not a

20-04-2026 22:00

Malcolm  Greaves Malcolm Greaves

These pale yellow, hairy ascos were growing on cul

19-04-2026 21:23

Steve Clements

Bonjour, I found this anamorphic fungus on old pl

19-04-2026 20:46

Steve Clements

1 mm diameter approx spherical conidiophores on pl

12-04-2026 17:56

Hardware Tony Hardware Tony

Found on dead stems in February earlier this year

17-04-2026 19:16

Enrique Rubio Enrique Rubio

Hi to everybodyI would appreciate any assistance r

14-04-2026 05:32

Ethan Crenson

Hi all, A few weeks back a friend pointed out som

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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