28-04-2024 18:05
Bernard CLESSEBonsoir à toutes et tous,J'ai trouvé ce matin ce
24-03-2024 08:27
Thierry BlondelleHiOn Hedera helix fallen branchEcological habitat:
26-04-2024 10:07
Mathias HassHello, Does anyone know what this is? Found on J
24-04-2024 21:54
éric ROMEROBonjour, J'ai trouvé ce Lasiobolus sur laissées
23-04-2024 15:18
Lothar Krieglsteiner... but likely a basidiomycete. I hope it is o.k.
23-04-2024 13:17
Edouard EvangelistiBonjour à tous, Je viens de récolter ce que je
23-04-2024 21:49
Ethan CrensonHello all, A friend recently found this orange as
22-04-2024 11:52
Zuzana Sochorová (Egertová)Hello,I made a loan of a collection of Microstoma
11-01-2022 16:36
Jason KarakehianHi does anyone have a digital copy of Raitviir A (
unfortunately I have another strange pyrenomycete growing on dead attached Ulmus twigs, of which I do not know what it can be. I have seen similarities to Anisogramma, Mamiania and Apioporthe, but there is no species which fits with this one here:
The fruitbodies grow between the surface of the wood and the bark, they consist of a stroma with hairy surface which is somewhat flattened, and several perithecia inside. Macroscopically it reminds me on some Splanchnonema or even Pseudomassaria.
Sp 14-17x5-7µm, clearly apiosporous, hyalin, smooth, I have seen a rest of a hyaline sheath surrounding the spores. Asci with distinct apical apparatus (Congo), IKI-; Sp mostly uniseriate, sometimes partly biseriate.
Any idea?
regards,
björn
This reminds me of a species of Melanconis. Melanoconis chrysostroma has similar ascospores but grows on Carpinus spp. Does it produce conidia?
Dave
I haven't seen any conidia, and I do not believe that it is a Melanconis. I have compared the finding with several species of Melanconis, but it has very different features.
regards,
björn
Hi Björn,
Seems to me too that Anisogramma may be reasonable, but no idea for a species... Nice finding
I think that your species is very closed to Apiospora apiospora. But...
It's an american species growing on Ulmus and Wehmeyer gave : 11-14 x 2.5-5.5 µm, and Ellis & Everhart gave for the basionym Diaporthe apiospora : 11-15 x 6-10 µm.
Perhaps is it an european Apioporthe apiospora ?
Alain
I think Apioporthe apiospora comes closest. The description giving by Wehmeyer has similarities with my finding, except the spore size. But I think it is A. apiospora.
Perhaps there is another idea. I recently find another species on these Ulmus twigs: Eutypella stellulata.
Many thanks to all who have written here until now :)
regards,
björn
I agree with you. In Ellis & Ev. the width is like your one. But as I said, perhaps we can find some little differences between the two continents. Molecular study or culture perhaps would bring the answer to the question.
Eutypella stellulata is a common species in the Old Continent, ouf ! (ouf != ah ! = Ach !)
Alain
but E. stellulata is a new species for me, even if it seems to be common :P ouf ^^
Who is willing to have the Apioporthe for molecular studies?
if you want you can send your specimen to me, I will try to obtain molecular data
Christian
I have to thank Walter Jaklitsch, he has the idea of Melanconiella, which has aberrated spores due to the cold weather.
I am now also sure the substrate is not Ulmus, I have compared the twigs and there had been several from Carpinus, which we had collected per random. At least this was not a professional work, but we have gained a new very interesting species :)
regards,
björn