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A bright colour Alpine Helotiale
Michel Hairaud,
07-01-2014 23:04
Bonjour à tous, Hi to all. This tiny bright yellow disco was discovered in an Alpine zone on previous year's Cirsium stems lying on ground. I had already seen it in French Alps several times long ago but I must admit I still cannot give an name to it. Any help will be welcome.Â
J'ai récolté ce petit disco cet été en zone alpine sur vieilles tiges de Cirsium au sol . C'est une espèce que j'ai déjà rencontrée dans les Alpes françaises il y a longtemps mais ne sais toujours pas comment le nommer. Merci de votre aide.
Apothécies sessiles, jaune d'or, à marge méchulée , < 0,4 mm
Le pigment jaune contenu dans les poils réagit fugacement en rouge vif à KOH
Asques H+, IKI + Bleun Calycina type. 65-70 x (6)8-9 µm PS 28-30
Spores 13,5-16 x 2,5-3 , cylindriques , légèrement courbes OCI 0,5 , parfois 1 septaÂ
Poils de marge llisses, fascilulés en mèches  --> 70µm , dernier article 35 µm x 3,5-4,5 Vacuoles réfringentes homogènes jaune d'orÂ
Paraphyses droites, apex  parfois subconiques, VBs jauneÂ
EE globulosa angularis évoluant vers prismatica vers l'extérieur où les cellules contiennent des vacuoles comme dans les poils. CRB -Â
Amitiés
Michel
Hans-Otto Baral,
08-01-2014 18:10
Re : A bright colour Alpine Helotiale
Hi Michel
did you test  image 6 with NH4OH?
The fungus reminds me of Psilachnum rubrotinctum and ERD 5740 (Tilia bark), but those have much smaller spores.
I have no idea otherwise.
Zotto
did you test  image 6 with NH4OH?
The fungus reminds me of Psilachnum rubrotinctum and ERD 5740 (Tilia bark), but those have much smaller spores.
I have no idea otherwise.
Zotto
Michel Hairaud,
08-01-2014 18:52
Re : A bright colour Alpine Helotiale
Hi zotto,Â
Thank you for your interest for this post.
I have in memory P. rubrotinctum found by the Master of Asturiana (Enrique)! I think it was also collected during last year Somiedo congress . Â This fungus is first white and gets the very same colour as mine with NH4OH
I did not test NH4OH and the colour you see here is natural. The red violent reaction was  produced by KOH 5% and lasts a few secondsÂ
Besides, as you notice, spores are quite different . Paraphyses might belong to Psilachnum as shown on the fllowing picture. I am not sure . I first thought of Calycellina but the CRB reaction in vacuoles does not match, neither the spore envelop .
Amitiés
Michel
Thank you for your interest for this post.
I have in memory P. rubrotinctum found by the Master of Asturiana (Enrique)! I think it was also collected during last year Somiedo congress . Â This fungus is first white and gets the very same colour as mine with NH4OH
I did not test NH4OH and the colour you see here is natural. The red violent reaction was  produced by KOH 5% and lasts a few secondsÂ
Besides, as you notice, spores are quite different . Paraphyses might belong to Psilachnum as shown on the fllowing picture. I am not sure . I first thought of Calycellina but the CRB reaction in vacuoles does not match, neither the spore envelop .
Amitiés
Michel
Hans-Otto Baral,
08-01-2014 20:27
Re : A bright colour Alpine Helotiale
Psilachnum is perhaps not the good genus for rubrotictum either. The genera that exist are perhaps not enough to cover these klinds of fungi.
I instantly hope that more and more sequencing working groups will get interested in all the various groups of Helotiales...
So keep this material safely in your herbarium.
ZottoÂ
I instantly hope that more and more sequencing working groups will get interested in all the various groups of Helotiales...
So keep this material safely in your herbarium.
ZottoÂ
Gernot Friebes,
16-08-2022 20:38
Re : A bright colour Alpine Helotiale
Dear friends,
I collected this beautiful species today, also on Cirsium at approx. 2200 m a.s.l. Is there any new information on this?
Best wishes,
Gernot
I collected this beautiful species today, also on Cirsium at approx. 2200 m a.s.l. Is there any new information on this?
Best wishes,
Gernot
Hans-Otto Baral,
16-08-2022 20:49
Re : A bright colour Alpine Helotiale
Not really, only that F. Valade found it in 2014 on Adenostyles and U. Graf in 2017/18 on Cirsium spinosissimum.
Gernot Friebes,
16-08-2022 20:56
Re : A bright colour Alpine Helotiale
Okay, thanks. Could you please tell me where I find your folder of this species?
Hans-Otto Baral,
16-08-2022 21:11
Re : A bright colour Alpine Helotiale
Ah yes, it is in Cistella, provisionally, but two sequences of it confirm this. No sequence exists for typical rubrotinctum.
Gernot Friebes,
16-08-2022 21:31
Re : A bright colour Alpine Helotiale
Thank you!
Nicolas VAN VOOREN,
17-08-2022 08:34
Re : A bright colour Alpine Helotiale
Hello.
We regurarly collect this species during our alpine zone forays. Michel is rather busy these days, so he asked me to tell you that he's still working on it and will soon end his study.
Nicolas
We regurarly collect this species during our alpine zone forays. Michel is rather busy these days, so he asked me to tell you that he's still working on it and will soon end his study.
Nicolas
Hans-Otto Baral,
17-08-2022 09:03
Re : A bright colour Alpine Helotiale
Good to hear! Will be a good issue, I am looking forward.