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05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

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Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

06-07-2025 19:36

Castillo Joseba Castillo Joseba

me mandan el material de Galicia (España) recolec

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David Chapados David Chapados

Hi,Does anyone know what could this anamorph be?ht

02-07-2025 18:45

Elisabeth Stöckli

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

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Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

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On Metrosideros fallen old leaves
Elsa Sousa, 23-01-2018 23:48
Good evening,
Is it possible any help with this fungus?

Apothecia erumpent from the leaf opening star like. Inner surface white like Propolis. I see some black ascomatas (cleistothecium?) but I'm not sure they are related, since there is no asci on them, but I can upload images later.

Spores filiformes (61.6) 67.2 - 79.8 (80.7) × (3.3) 3.31 - 3.9 (4.2) µm 

Me = 71.1 × 3.7 µm

Asci ± 72 x 11.5 paraphyses filiformes

Thank you very much
Regards
Elsa
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Hans-Otto Baral, 24-01-2018 09:37
Hans-Otto Baral
Re : On Metrosideros fallen old leaves
It could be a Marthamyces, a relative of Propolis, but I never saw a species of that genus. A pity that your photos are unsharp. Is there any reaction with Lugol?
Elsa Sousa, 24-01-2018 21:03
Re : On Metrosideros fallen old leaves
Thanks Zotto, for answering I always admire your generosity :)


I think you're right. The tree is Metrosideros excelsa, it's a NZ originary tree and it's used as ornamental tree on litoral cities here.

Unfortunately my scope magnification is very poor, measuring can have an error specially on width. The fungus is non-amyloid. Spores are 0-1 septate but the septa is not in the middle. Remeasuring more asci it turns to 74.5 × 8.3 µm. The stalk is so short that I don't see it in many asci.

I found this description:

https://virtualmycota.landcareresearch.co.nz/webforms/vM_Species_Details.aspx?pk=35621

and these keys

https://www.researchgate.net/publication/309295913_Marthamyces_coronadoae_sp_Nov_in_a_Fagus_grandifolia_subsp_mexicana_forest_from_Hidalgo_State_Mexico



What do you think?
Hans-Otto Baral, 24-01-2018 23:12
Hans-Otto Baral
Re : On Metrosideros fallen old leaves
Thanks for the article, I did not know. Where did you collect your fungus? I sit a planted tree there?

Indeed I believe it is the right genus and perhaps this M. emarginatus.


Elsa Sousa, 24-01-2018 23:32
Re : On Metrosideros fallen old leaves
I collected the leaves in a small garden with only those trees, in Vila-do-Conde a city on the coast.