14-07-2025 11:17
Yanick BOULANGERBonjourJ'ai un dossier Jackrogersella qui est rest
14-07-2025 15:52
Gernot FriebesHi,I wanted to share this collection on Rubus idae
14-07-2025 13:37
Gernot FriebesHi,do you think this collection could be R. ulmari
14-07-2025 11:20
Michel Hairaud
Bonjour, Voici une espèce de (?) Hyaloscyphace
14-07-2025 11:19
Michel Hairaud
Bonjour, Voici une espèce de (?) Hyaloscyphace
14-07-2025 11:19
Michel Hairaud
Bonjour, Voici une espèce de (?) Hyaloscyphace
12-07-2025 16:45
Thierry Blondelle
Bonjour à tous,J'avais d'abord pensé à des stro
05-07-2025 12:38
Åge OterhalsI found this pyrenomycetous fungi in pine forest o
Rhizodiscina lignyota ?
Ethan Crenson,
13-02-2023 17:30
Hello all,
I collected this two days ago on bare hardwood in New York City. I was expecting to bring home the much more common Patellaria crassispora, but this is obviously not that. Can anyone confirm this is Rhizodiscina lignyota, or if not, point me in the right direction? I have a vague idea that R. lignyota is fairly common in some places, but I have never found it in my neighborhood.
Spores are brown, one septate, smooth, 9-10.5 x 3.7-4µm
Asci bitunicate, clavate, very faintly IKI+ staining blue over much of the upper surface, 44-56 x 9-10µm
Paraphyses septate, slightly constricted at the septa, up to 4.3µm wide at the tips.
Excipulum textura angularis
Thanks in advance,
Ethan
Hans-Otto Baral,
13-02-2023 18:51
Re : Rhizodiscina lignyota ?
I see no objection to your ID. Abundant brown anchoring hyphae should be there, which gave rise to the name Rhizodiscina. The species is really common.
Ethan Crenson,
13-02-2023 18:57
Re : Rhizodiscina lignyota ?
Thank you, Zotto! in my experience, here in the Northeastern US, it isn't all that common. I have found the very similar Patellaria crassispora and (occasionally) P. atrata at least 70 times (I checked my records), but I have never seen Rhizodiscina until now.
I will look for the anchoring hyphae for extra credit.