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Hymenoscyphus H-, with long spores
Khomenko Igor, 09-01-2021 21:07
Khomenko IgorHi,

Is this just a long spore variation of Hymenoscyphus scutula (H. aff. fucatus), or is it something else?

https://inaturalist.ca/observations/57610849


On rotten leaves, white when fresh and yellowish when dried.
The stalk base was white.
Spores:
(28.6) 29.5 - 36 (36.7) × (3.5) 3.9 - 4.4 (4.5) µm
Q = (6.6) 6.9 - 8.8 (9.9) ; N = 30
Me = 32.8 × 4.2 µm ; Qe = 7.9
Asci with a simple base, IKI+b.


Best regards,
Igor

Hans-Otto Baral, 09-01-2021 22:39
Hans-Otto Baral
Re : Hymenoscyphus scutula H-, with long spores
It is a pity that you didn't study this when fresh. H. fucatus var. badensis and H. fucatus have croziers. H. scutula would concur in lacking croziers, but so long spores are impossible, also I can't see setulae. The American H. dearnessii appears to be similar, but is said to have a very short stipe and is on herbaceous stems, also the spores are more flexuous.
Khomenko Igor, 10-01-2021 01:28
Khomenko Igor
Re : Hymenoscyphus scutula H-, with long spores
Thank you Zotto for your response,

I did examine the specimen the next day, but this was more delicate than others and maybe it was too much for it. I took many pictures, but none of them shows the content of paraphyses well, but I attached the best what I have. It was my first year of hunting Hymenoscyphus like species and I'm lost in the process of recording and identification of them, so I'm not efficient,  but I'm learning and maybe by the summer I will know what to do.
It is in an area where I hike a lot, so I will have a high chance of finding it again at the same spot.

Best regards,
Igor
  • message #66971
Hans-Otto Baral, 10-01-2021 08:47
Hans-Otto Baral
Re : Hymenoscyphus scutula H-, with long spores
Yes, this looks like the paraphyses have VBs, which is the normal case with these taxa with scutuloid spores. Looking forward to the next collection.

Zotto
Khomenko Igor, 18-01-2021 22:41
Khomenko Igor
Re : Hymenoscyphus H-, with long spores
Hello,
Sorry for raising this topic again. I reexamined the specimen, looked at the textura and I think the medullary excipulum is porrecta and ectal excipulum is prismatica. I don't know if this helps. I uploaded the pictures (https://inaturalist.ca/observations/57610849).
I usually look at spores, paraphyses, and asci when they are still fresh and I take macro photos and I can do the rest later. What other steps should I do when I get fresh Hymenoscyphus-like specimen? Or what other tools should I be using?
Last year I was overwhelmed with a number of new species I was collecting. Usually, if I find something new it really slows me down and I was unable to look at all my specimens, so definitely I've missed a lot. This coming season I will revisit these places and I will get more fresh specimens. I want to be ready to handle them.

Thanks,
Igor

Hans-Otto Baral, 19-01-2021 10:16
Hans-Otto Baral
Re : Hymenoscyphus H-, with long spores
Hymenoscyphus s.str.  (spores scutuloid) is difficult, the species are mainly characterized by hymenial features (spores, asci, paraphyses). In the group of stroma-forming species als crystals in the stipe. The excipulum I do not remember to offer real features.
Khomenko Igor, 19-01-2021 14:58
Khomenko Igor
Re : Hymenoscyphus H-, with long spores
Thank you , Zotto.
Khomenko Igor, 07-08-2021 06:35
Khomenko Igor
Re : Hymenoscyphus H-, with long spores
Hi,

This Hymenoscyphus is back at the same spot as the last year and I collected enough to study.
This time I got a good picture of paraphyses. The spores slightly smaller ((26.7) 27 - 31.7 (35.6) × (4) 4.1 - 4.7 (4.9) µm), but the rest looks the same. I still don't know on what leaves it grows, but there is a chance that it could be Ulmus.
I looked for crystals in the stipe and couldn't find them, only saw cells with nucleus.


All new pictures are here:
https://inaturalist.org/observations/90185294


Igor

  • message #69766
Hans-Otto Baral, 08-08-2021 20:56
Hans-Otto Baral
Re : Hymenoscyphus H-, with long spores
Hmmm, I can only refer it in relationship of H. dearnessii.
Khomenko Igor, 10-08-2021 02:33
Khomenko Igor
Re : Hymenoscyphus H-, with long spores
Thanks for your help Zotto, at least now I have some name on it.

Regards,
Igor