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07-02-2023 22:28

Ethan Crenson

Hello friends, On Sunday, in the southern part of

19-02-2026 17:49

Salvador Emilio Jose

Hola buenas tardes!! Necesito ayuda para la ident

09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, t

19-02-2026 13:50

Margot en Geert Vullings

We found this collection on deciduous wood on 7-2-

19-02-2026 12:01

Castillo Joseba Castillo Joseba

Me mandan el material de Galicia (España), recole

17-02-2026 09:41

Maren Kamke Maren Kamke

Good morning, I found a Diaporthe species on Samb

16-02-2026 21:25

Andreas Millinger Andreas Millinger

Good evening,failed to find an idea for this fungu

08-12-2025 17:37

Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

17-02-2026 17:26

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous, Je recherche cette publication :

03-02-2013 19:50

Nina Filippova

Good time), I've compared this specimen with the

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Hydropisphaeria sp.
Garcia Susana, 25-03-2015 08:14
Hi all:

I found this ascomycete growing on stems of Equisetum arvense.
Perithecia size diameter is 200-230um. They are superficial, on a subiculum of hyphae; very easily removable. Color orange. When drying takes on a darker color and takes shape apotecioide.

The reaction is negative both KOH and the lactic acid.
Spores I see them smooth (I made stains with CB and RC and I have not seen any trace of ornamentation).
With the documentation that I have, I understand that this is Hydropisphaeria, and the key I have come to H.arenula, but the spore size would be too large.
That think?


regards
Susana

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Hans-Otto Baral, 25-03-2015 08:36
Hans-Otto Baral
Re : Hydropisphaeria sp.
Yes I also think it is H. arenula. When I wrote with Christian the paper on Ijuhya equiseti-hyemalis, we treated also this species.

Spore size fits well. In H.B. 8622b, e.g., I measured 13.5-)16.5-#18-21#(-22.5) x 4.3-5.2(-5.8) µm

I also revised the type of Nectria equiseti-hiemalis showing spores in KOH (12-15-)16-22 x (3.2-)3.5-3.7(-4.2) µm. We confirmed its synonymy with H. arenula.

Do you have my paper? It is in Österr. Z. Pilzk. 17 (2008). I can send you a pdf.

Zotto
Gernot Friebes, 25-03-2015 09:02
Re : Hydropisphaeria sp.
Hi,

the paper Zotto mentioned is also available online:

http://www.landesmuseum.at/pdf_frei_remote/OestZPilz_17_0015-0024.pdf

Best wishes,
Gernot
Garcia Susana, 25-03-2015 09:06
Re : Hydropisphaeria sp.
Hi Zotto,

Thanks for the confirmation.
No, did not have the paper you mention, but I've seen that is available on the red and I've downloaded. Now I'll have a look.

Un saludo
Susana