07-11-2018 08:34
Zuzana Sochorová (Egertová)Hello, could someone send this publication to me
18-05-2024 10:47
Anna KlosGoodmorning,We found this tiny ascomycete (max. 1m
25-03-2024 19:14
Juuso ÄikäsI found some small black pyrenos growing on a dead
10-05-2024 17:40
Anna KlosGood afternoon, Thursday during an inventory we f
17-05-2024 16:25
Pavel JiracekErioscyphella lunata, found on a fallen needle of
29-01-2022 21:44
Jan EcksteinGood evening, apothecia small, yellowish, 150-300
16-05-2024 11:19
Sylvie Le GoffBonjour, j'ai récolté sur une branchette de feui
14-05-2024 09:19
Hans-Otto BaralHi, I want to announce for next Sunday 17.00 middl
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