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25-04-2025 17:24

Cosmospora/Dialonectria spec.
Stefan Blaser

Hi everybody, This collection was collected by J

09-02-2026 22:01

Sp
ruiz Jose

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

10-02-2026 17:42

Hélotiale blanche sur Sambucus racemosa
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me donner

10-02-2026 18:54

Unknown pink heliotale on sphagnum
Erik Van Dijk

Does anyone has an idea what fungus species this m

09-02-2026 20:10

(2 different or one ?) Hypoxylon from the Algarve – on Acacia and Arbutus
Lothar Krieglsteiner Lothar Krieglsteiner

The first 6 tables show surely one species with 2

09-02-2026 14:46

Cistella granulosella of Hyphodiscus incrustatus?
Anna Klos

Goedemiddag, Op donderdag 5 februari vonden we ti

09-02-2026 11:42

Lachnum sp.
Åge Oterhals

Hi forum, I found this Lachnum on old hardwood tw

02-02-2026 21:46

Dark disc on Populus
Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

25-01-2026 23:23

Delitschia/Lojkania? on wood
Tomaz Vucko Tomaz Vucko

Hello! I found this species that resembles Delitsc

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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
see this one: https://svampe.databasen.org/observations/10075277

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