20-12-2025 23:08
Patrice TANCHAUDBonsoir, récolte sur sol sablonneux dans l'arri
21-12-2025 09:32
Josep Torres
Hello.A tiny ascomycete found embedded in wood in
20-12-2025 15:47
Mirek GrycHi.These grew on pine wood that was heavily covere
18-12-2025 21:17
Pol DebaenstThe identification took me to Byssonectria deformi
15-12-2025 07:09
Danny Newman
indet. Rutstroemiaceae sp. on unk. fallen leavesMc
19-12-2025 10:10
Patrice TANCHAUDBonjour, récolte réalisée en milieu dunaire, a
18-12-2025 17:23
Bruno Coué
Bonjour,je serais heureux d'avoir votre avis sur c
I send you a Word document with my find on juncus.
Is my determination correct? I have my doubts. In Breitenbach(vol. 1 p. 146) it should be stalkless but taking into account the taxonomic corrections the determination is correct! Ellis and Ellis p.498 confirms my conclusion, so am I right or am I wrong.
Thanks in advance, kind regards,
François Bartholomeeusen
GrasstromakelkjeAF-0001.docx
R. calopus is usually stalked. Your photo of an apically opened ascus in IKI shows a distinct bluing. Now important would be the ascus base. Did you see young asci emerging from the basal cells? Are there croziers or not?
There is a quite sharp delimitation between Poaceae (with croziers) and Cyperaceae/Juncaceae (without). From the substrate yours should be R. paludosa (or R. henningsiana which seems to be the older name).
There is a recent paper on this, by F. Pancorbo, Miguel-Angel Ribes et al. 2013.
Estudio micobiota ecosistema dunares Peninsula y Baleares I.
Bol. Soc. Micol. Madrid 37: 175-201
See also here
http://www.ascofrance.fr/search_forum/22183
Zotto
Thanks for your quick response, unfortunately I have no more material to investigate. I add some pictures, but I suspect they do not bring clarity.
In any case, many greetings,
François
I am sending you the paper.
Good luck.
It is so nice to have friends...so far away... Many thanks for your help!
I revisited the site and with some difficulty discovered that the substrate is not Juncus effusus but Eleocharis palustris(Cyperaceae).
According to Bernard Declerck it's the first time that Rutstroemia paludosa was found in Flanders.
Kind regards,
François
I checked the collection received from François. The asci have indeed no croziers, only a basal bent protuberance.
I am interested in receiving the Pancorbo & al. paper too. Thanks in advance.
Best regards,
Bernard
Zotto