Material search - Forum ASCOFrance

15-11-2025 23:22

Hymenoscyphus macroguttatus? on Phytolacca

Mario Filippa

Hello,this is what I think to be Hymenoscyphus mac

14-11-2025 16:26

Small species on Cytisus scoparius

Marian Jagers

Hello everyone, On dead wood of Cytisus scoparius

15-11-2025 20:25

Cryptosphaeria ligniota?

Riet van Oosten

Hello, Found by Laurens van der Linde, Nov. 2025

15-11-2025 09:21

Anamorph on Buxus.

Josep Torres

Hello.An anamorph resembling Capronia is sprouting

14-11-2025 18:31

literature request

Lothar Krieglsteiner

Hello,can somebody provide me with a file of:Rothe

12-11-2025 21:47

sp en restos de poda

ruiz Jose

Hola a todos, me envían esta colección en resto

12-11-2025 09:25

Pseudombrophila on soil

Viktorie Halasu

Hello, I need help with a pale terrestric Pseudom

11-11-2025 20:16

yellow discs on a Quercus robur leaf

Bohan Jia

Hi, lastly I have found these tiny yellow decayin

09-11-2025 13:20

Ascomycete on Rubus.

Josep Torres

Hello.A tiny ascomycete, appearing as erupting gra

08-11-2025 12:10

Phacidium

Elisabeth Stöckli

Bonjour, Trouvé sur tiges mortes de Rubus (ronce

Material search

Viktorie Halasu, 22-06-2021 01:00

Dear friends,

I'm looking for recent material of Rutstroemia (Lanzia) longipes from North America (ideally from the U.S., NY state) to study and compare with european collections. It would be also great if you can note some of the characters while still alive and in water mount, esp. paraphyses contents, surface hyphae, ascus and spore size.

Thank you very much.
Viktorie

Hans-Otto Baral, 22-06-2021 09:27

Re : Material search

Hi Viktorie

do you have vital images of European longipes? I found a note that you wanted to show me some (Aug. 2020, I have only your macro MG_7211_cr2000w_rgb). As you can see I know only living spores photographed by Irina.

Zotto

Viktorie Halasu, 22-06-2021 13:46

Re : Material search

Hello Zotto,
yes, I have half-finished answers on several of your e-mails including this one. I'll try to put the photos together and send them. I appologize for my extremely slow tempo.
Viktorie

Khomenko Igor, 22-06-2021 16:39

Re : Material search

Hi Viktorie,
Like I said in my last e-mail, I have the last year's specimen (https://inaturalist.org/observations/58764878) and if you need I can send it, but I need to know what part of it do you need, or maybe you need it all. It is not from NY state, but close. I'm probably going to find more specimens later this year in September, as I've done in the previous two years.

Khomenko Igor, 29-07-2021 22:42

Re : Material search

Hi Viktorie,

Yesterday I collected Lanzia longipes in the location I've seen it in 2019. I posted some pictures here.
https://inaturalist.org/observations/88991407
I believe some living paraphyses have low refracting VBs. It is difficult to see (picture#8).
With surface hyphae, I'm not sure what to look for.

Hans-Otto Baral, 30-07-2021 20:51

Re : Material search

Superb pics! Granular cortical hyphae are typical of Rutstroemia. Do they produce a ionomidotic reaction?

VBs I would estimate as very weakly refractive (guttulate) to zero, so no conspicuous contents.

Khomenko Igor, 31-07-2021 06:02

Re : Material search

No, it didn't produce ionomidotis reaction. KOH dissolved granular from cortical hyphae and the solution became yellow. At the same time, cortical hyphae became transparent and I was able to see ectal excipulum underneath it.

I uploaded the last three pictures. https://inaturalist.org/observations/88991407

Hans-Otto Baral, 31-07-2021 08:19

Re : Material search

But this is ionomidotic: dissolution of a pigment that becomes visible in the medium. Yellow or red-brown are different colour types of that reaction. The term reaction is not good in my opinion, becaouse chemical reactions are often recognizable by a colour change.

Khomenko Igor, 01-08-2021 03:04

Re : Material search

It was my mistake.
Thank you so much for your explanation.

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