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02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

02-07-2025 17:26

Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

02-07-2025 09:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello, bonjour.Here is the paper I'm searching for

30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

30-06-2025 12:09

Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

30-06-2025 06:57

Ethan Crenson

Hi all, Another find by a friend yesterday in Bro

30-06-2025 19:05

ALAIN BOUVIER

Bonjour à toutes et à tousJe cherche à lire l'a

30-06-2025 14:45

Götz Palfner Götz Palfner

This is a quite common species on Nothofagus wood

25-06-2025 16:56

Philippe PELLICIER

Bonjour, pensez-vous que S. ceijpii soit le nom co

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Spores of Leotia lubrica are septate?
Masanori Kutsuna, 17-09-2014 03:33
Hello everyone,

According to some literatures (Dennis, Breitenbach and Kranzlin ...),
ascospores of Leotia lubrica have 3 or more septa at maturity.
But I can't see any septa in Japanese materials.
What should I do to see septated spores?
Does anyone have microphotos of septated spores?

Masanori Kutsuna
Hans-Otto Baral, 17-09-2014 08:55
Hans-Otto Baral
Re : Spores of Leotia lubrica are septate?
Leotia and Microglossum do not develop septa at all. I never saw them. A frequent mistake with herbarium material is that plasma bridges between the big oil drops are taken for septa (they are called "pseudosepta"). But with some experience or when staining with Congo Red I think they can safely be distinguished from true septa. With living spores there is no possibility to recognize any septation. The spores do not germinate easily, so it is possible that under optimum conditions the spores might indeed get septate during germination.

I remember a drawing by Chadefaud who illustrated eguttulate, clearly septate spores for Leotia. I never understood it, maybe it was a misidentification. Te drawing in Breitenbach & Kränzlin looks indeed convincing, with both septa and big oil drops. But it was made in the dead state, and I am sceptical about it.

Zotto
Masanori Kutsuna, 17-09-2014 09:24
Re : Spores of Leotia lubrica are septate?
Thank you very much for your detailed explanations, Zotto.

Kutsuna