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14-09-2025 22:16

Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

13-09-2025 14:10

Wim de Groot

We found this hymenoscyphus on rubus fruticulosis.

13-09-2025 15:43

Edmond POINTE Edmond POINTE

Bonjour Christian,J'ai trouvé deux spores ressemb

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

10-09-2025 23:53

Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

09-09-2025 12:07

Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

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Strange fungus on Phragmites stems
Enrique Rubio, 25-05-2022 12:06
Enrique RubioHi forum.
These tiny, gregarious, gregarious, blackish, conical or pyriform ascomata up to 200 µm long, grew on Phragmites australis stems. The ascomata are glabrous, but the necks of the ascomata are fimbriated by long hyaline hairs but more shorter brownish hairs surround the ostiole. I see no paraphyses and the asci are very peculiar, cylindrical, rather long, sometimes more than 100 µm long, without reaction in Melzer's reagent, with numerous small, ellipsoidal, hyaline ascospores. I don't know their discharge mechanism and am therefore I'm very confused about the placement of this fungus, which I don't exclude that it could be lichenized since numerous green algae surround the ascomata.
Do you have any idea that could help me?

 

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Thomas Læssøe, 25-05-2022 17:03
Re : Strange fungus on Phragmites stems
Enrique Rubio, 25-05-2022 17:30
Enrique Rubio
Re : Strange fungus on Phragmites stems
I can see that what I thought were asci are in fact firmly cemented conidia!
Thanks a lot, Thomas.
A nice fungus!
Eduard Osieck, 27-05-2022 15:32
Re : Strange fungus on Phragmites stems
Anisomeridium polypori occurs mainly on wood bark: “rough bark of broad-leaved trees, especially Sambucus and Ulmus, sometimes overgrowing bryophytes; also on shaded rock, especially damp pebbles, and bone” (Orange 2013). A similar species has larger conidia (A. robustus). I don’t know whether there are any species of these lichenised species that occur on monocots. I am puzzling with an Anisomeridium on Juncus with long cirrhi filled with conidia. There exists a world key of Anisomeridium but it doesn’t appear to be available on Internet (Harris 1995, More Florida Lichens, including a 10 ¢ tour of the pyrenolichens. New York: privately published). Possibly it gives some indications about the occurrence on monocots.
Eduard
Enrique Rubio, 27-05-2022 17:34
Enrique Rubio
Re : Strange fungus on Phragmites stems
Thank you, Eduard
I will try to get that publication.
Thanks again
Chris Yeates, 27-05-2022 21:46
Chris Yeates
Re : Strange fungus on Phragmites stems
Paul Cannon points out on this thread http://www.ascofrance.com/search_forum/69018

that Anisomeridium has a wide substrate range - as you see here it was on a fern . . .

Chris