24-06-2021 19:17
Josep Torres
Hola.unos diminutos apotecios de color amarillo fo
24-06-2021 12:15
Edvin Johannesen
Hi! This Propolis was growing on exposed, decort
04-06-2021 09:37
Christian Lechat
Chers collèguesAscofrance a été fondé en 2003
23-06-2021 18:37
Andgelo Mombert
Sur branche morte décortiquée de Tilia cordata
22-06-2021 19:15
Enrique Rubio
Could someone please send me a copy of this paper?
17-06-2021 15:54
Khomenko Igor
For the last few years, I and others were finding
18-06-2021 23:08
Kosonen Timo
Hello, Any ideas on this one? Spores ca. 14 x 3,
17-06-2010 09:13
Pascal RIBOLLETBonjour à tous J'ai récolté sur de la mousse
Fern mystery
Chris Yeates,
02-06-2021 20:41
Bonsoir tous
After 40 years of looking at fungi it is quite unusual these days that I come across a fungus which completely confuses me; even if I often seem to collect enough "puzzles" I am usually able to surmise at least an order.
This was spotted in the field, small pyramidal black structures on a short length of a dead Athyrium filix-femina stem.I hope the pictures show features which will not require explanation, but what are we looking at? I'm assuming these cylindrical bodies are asci with tiny broadly ellipsoid spores (3.4-5.1 x 2.8-3µm) containing one or a few droplets? Or is this an anamorph producing budded off conidia? There was no indication of forceful ejection either of "asci" or spores. I am assuming that the free spores have come from the "asci" though those in the latter look more globose and have (it seems) generally only one droplet.
As can be seen the ostiole consists of short dark bristles surrounding longer, septate, hyaline ones.
I may well be missing something but I have never collected anything that looks quite like this. Any help would be good . . .
Chris
Charles Aron,
03-06-2021 09:26
Re : Fern mystery
Hi Chris,
Inriguing fungus and I've no idea but I was wondering what iodine reactions would be. Might help clarify whether the structures are asci.
Cheers,
Charles.
Paul Cannon,
24-06-2021 12:31
Re : Fern mystery
Sorry Chris, missed this one. It's a lichen, Anisomeridium polypori. Commonest on bark of broadleaved trees but can can occur in all sorts of unexpected habitats. The conical pycnidia exuding conidia like toothpaste from a tube are typical of the species.
Best wishes
Paul
Chris Yeates,
24-06-2021 15:10
Re : Fern mystery
Thanks Paul - I had considered contacting you directly re this one!
But I saw no evidence of a photobiont . . . . (?)
Paul Cannon,
24-06-2021 16:22
Re : Fern mystery
The thallus is described as "often inconspicuous, effuse, whitish grey or pale grey-green". So semi-invisible...
Chris Yeates,
24-06-2021 22:55
Re : Fern mystery
The first image shows green areas which will of course be the photobiont!