25-03-2024 13:41
B Shelbourne• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a
25-03-2024 21:27
Riet van OostenHello, Found by Laurens van der Linde, March 2024
24-03-2024 08:27
Thierry BlondelleHiOn Hedera helix fallen branchEcological habitat:
26-03-2024 11:06
michel bertrandBonjour, Malgré de nombreuses recherches, je n'a
25-03-2024 03:56
B Shelbourne• Scuttelinia: Macro and habitat.• S. scutella
On 5 August 2022, a friend gave me a piece of a branch of Ulmus (13 cm long, 2.5 cm in diameter) covered with an anamorph. Under those white/pink spots, the bark was covered with green algae and lichens.
The conidia with 1 sept (slightly off-centre and slightly contracted there) have the following dimensions: 20.3 - 24.5 × 10.6 - 12.7 µm; Q = 1.8 - 2.2 ; Me = 22.5 × 11.6 µm .
When wiping off those downy spots I found white bumps in the bark, under which were black perithecia with 1 ostiole that contained very dark spores with following dimensions:
43 - 55.5 × 18.6 - 22.6 µm; Q = 2 - 2.7; Me = 50 × 20.9 µm.
Due to the age of the branch, the prevailing dryness and heat, the material to be examined was in poor condition. With the key of ME Barr Mycotaxon Vol XV 1982 I could identify the ascomata as: Splanchnonema foedans.
My question is twofold: 1) Can someone confirm my determination?
2) Is the anamorph related to S. foedans and can it be identified?
Many thanks in advance,
François Bartholomeeusen
This is Splanchnonema foedans indeed, most probably a new species for Flanders.
The anamorph is Arthobotrys-like.
All the best,
Bernard
Despite the poor condition of the substrate, this is still a good find. Your choice for Arthrobotrys is more than plausible. I'm leaving for a week in the coolness of the coast and will try to elaborate on this find upon my return.
Thanks again for your reaction,
François