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26-01-2026 11:49

Anamorph on Cytisus
Margot en Geert Vullings

We found this possible anamorph on a dead Cytisus

25-01-2026 23:23

Delitschia/Lojkania? on wood
Tomaz Vucko Tomaz Vucko

Hello! I found this species that resembles Delitsc

18-01-2026 12:24

Anamorph on an olive tree
Josep Torres Josep Torres

Hello.An anamorph located on the surface of a thin

25-01-2026 16:08

Geoglossum
Malcolm Greaves Malcolm Greaves

This Geoglossum had spores mostly 70-80 (87) with

23-01-2026 21:50

Looking for a paper please
Cameron DK

I am looking for this please publication. is anyon

10-01-2026 20:00

Lichenicolous fungus on Protoparmeliopsis muralis
Tom Schrier

Hi all,We found picnidia on Protoparmeliopsis mur

21-01-2026 19:55

Nemania aureolutea?
Bohan Jia

Hi,  Could this be Nemania aureolutea? Or did I

21-01-2026 16:32

Lichenicolous coelomycete
Gernot Friebes

Hi,I need your help with some black dots on a lich

21-01-2026 16:48

Hyphomycete on Rubus fruticosus agg.
Gernot Friebes

Hi,after my last unknown hyphomycete on this subst

20-01-2026 17:49

Mollisina acerina ?? Turbinate and hemiamyloid
Hardware Tony Hardware Tony

I offer this collection as a possibility only as e

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Asco on Arnica
Maren Kamke, 16-06-2013 16:39
Maren KamkeHello everybody,
I found an ascomycete (0,1 mm) on arnica.
Spores (11-13) 11,72 x 3,88 (3-4,5) µm, with two bigger oildrops and many small ones on both ends.
Asci 48-50 x 9-11, IKI blue, paraphyses 3 µm.
Thanks
Regards
Maren
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Hans-Otto Baral, 16-06-2013 17:25
Hans-Otto Baral
Re : Asco on Arnica
Hi Maren

you made no mistake with 0.1 mm? And it was in the mountains? On the old stems?

No idea actually. I looked in my database for Asteraceae with such a spore size, no good result.

Something of the Naevioideae perhaps. Schizothyrioma has larger apos and is reported on Achillea.

Zotto
Maren Kamke, 16-06-2013 23:15
Maren Kamke
Re : Asco on Arnica
Hi Zotto,
thank you for your opinion.
There is an artifical arnica meadow on the westcoast of Schleswig-Holstein, we accompanied the botanical sektion to this spot to look after ascomycetes on arnica. What we didn't knew was that the meadow is mowed regularly and the clippings are removed. So we searched for arnica-stems. The botanist I talked to identified my stem as arnica, but it is not impossible that he was wrong.
On the same stem I found Cyathicula tomentosa,  Mollisia cf. revincta (still without spores :( and Leptospora rubella.

The apos are really very small, max up to 0,15 mm.
I checked with the Naevioideae? on your DVD, the color and the macroscopical habitus matches Ploettnera solidaginis, but the microscopical details of course not.
The spores get one septa with age.
I think it could be a Diplonaevia sp. but which one?


Regards Maren

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Hans-Otto Baral, 17-06-2013 06:56
Hans-Otto Baral
Re : Asco on Arnica
Ploettnera is not a bad idea, but it has a special type of apical ring (only the lower part of the wall reactive). Diplonaevia has a strongly protruding margin, which is to some extent also the case in your specimen. A Pyrenopeziza would be an alternative genus for your fungus, though such wide spores are unusual.

Arnica is not in the list of substrates in Hein 1976.

Zotto