Material search - Forum ASCOFrance

14-06-2025 13:28

titre : Hypoxylon sur populus

Richard VALERI

Bonjour à tous.Trouvé au sol, longuement résupi

13-06-2025 16:34

Strossmayeria-like on Fagus

Andgelo Mombert

Bonjour,Un petit discomycète qui me résiste. Il

13-06-2025 19:57

Helvella

Castillo Joseba

De ayer en bosque de hayas y avellanosEjemplar uni

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Lachnum sp. on Larix sp. cones

Rodríguez Borja

Hi, I have got this collection hoping you can giv

13-06-2025 09:41

Aquatic ascomycete.

Josep Torres

Hello.A cerebriform ascomycete sprouting scattered

12-06-2025 15:53

Arthoniales? Saccothecium-like

Viktorie Halasu

Hello, I keep finding something with spores like

12-06-2025 08:58

Help with some synnemata.

Josep Torres

Hello.Some synnemata sprouting in a scattered but

12-06-2025 19:26

Bryoscyphus conocephali

Charles Aron

Hi All, Recently I found this minute Bryoscyphus

12-06-2025 13:04

literature request

Angel Pintos

Hi, does anyone have the following article: Tibel

11-06-2025 13:44

Ciboria sur feuille d'Alnus alnobetula

Nicolas Suberbielle

Bonjour,J'ai trouvé cette espèce aux alentours d

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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