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Bernard CLESSE
Bonsoir à toutes et tous,Pourriez-vous m'aider à
Lachnum virgineum- or?
Marja Pennanen,
17-05-2010 13:35
I've preserved some specimen in blastic boxes into refrigerator.
I opened one and look, what I found on a pinus cone:
Marja Pennanen,
17-05-2010 13:38
Re:Lachnum virgineum- or?
It looks like Lachnum bicolor, doesn't it?
Its 1 mm wide and may be short stipate.
But microscopically it's like L. virgineum, except a couple of facts.
The paraphyses got some yellowish content:
Its 1 mm wide and may be short stipate.
But microscopically it's like L. virgineum, except a couple of facts.
The paraphyses got some yellowish content:
Marja Pennanen,
17-05-2010 13:41
Re:Lachnum virgineum- or?
The spores are 9-13x2-2,5, asci 45-57x4-5, paraphyses lanceolate, 3-5 micrometers wide and hairs 80-120x3-4, septate.
I'm confused.
I'm confused.
Miguel Ángel Ribes,
17-05-2010 14:38
Re:Lachnum virgineum- or?
Hi Marja
I have not a great experience with ascos, but Lachnum bicolor have crystals at the hairs apex. This is a form of L. bicolor I did long time ago: http://www.micobotanicajaen.com/Revista/Articulos/MARibesR/Aportaciones008/Lachnum%20bicolor%20220407%2053.pdf
It is sure not L. virgineum.
Miguel
I have not a great experience with ascos, but Lachnum bicolor have crystals at the hairs apex. This is a form of L. bicolor I did long time ago: http://www.micobotanicajaen.com/Revista/Articulos/MARibesR/Aportaciones008/Lachnum%20bicolor%20220407%2053.pdf
It is sure not L. virgineum.
Miguel
Björn Wergen,
17-05-2010 14:44
Re:Lachnum virgineum- or?
Hi Marja
I would say this is C. bicolor. Can you tell us more about guttules in the spores and about croziers? This may help to determine your finding ;)
cheers,
kazuya
I would say this is C. bicolor. Can you tell us more about guttules in the spores and about croziers? This may help to determine your finding ;)
cheers,
kazuya
Hans-Otto Baral,
17-05-2010 16:04
Re:Lachnum virgineum- or?
Hi all
It must be a Capitotricha, but I cannot remember to have ever seen a species on coniferous substate. Generally the substrate is a key character between Lachnellula and Capitotricha. The lanceolate paraphyses clearly exclude Lachnellula, also the apparent presence of crystals on the hairs. Therefore, more details would be welcome, such as
- ascus base (croziers)
- IKI reaction
- spore guttules
I fear the differences to C. bicolor are so low that we cannot be sure about a separate species.
Certainly Marketa Chlebicka would be interested in the material for taking sequences. How plenty is it, and how long was it in the fridge?
Zotto
It must be a Capitotricha, but I cannot remember to have ever seen a species on coniferous substate. Generally the substrate is a key character between Lachnellula and Capitotricha. The lanceolate paraphyses clearly exclude Lachnellula, also the apparent presence of crystals on the hairs. Therefore, more details would be welcome, such as
- ascus base (croziers)
- IKI reaction
- spore guttules
I fear the differences to C. bicolor are so low that we cannot be sure about a separate species.
Certainly Marketa Chlebicka would be interested in the material for taking sequences. How plenty is it, and how long was it in the fridge?
Zotto
Marja Pennanen,
17-05-2010 16:28
Re:Lachnum virgineum- or?
Hello,
this is all it was there.
It seems to be IKI+. Guttules can be checked from next photo (not , at least big ones).
But Zotto did you have to ask the one thing I didn't check: croziers :(
I was so sure this being some Lachnum....
Marja
this is all it was there.
It seems to be IKI+. Guttules can be checked from next photo (not , at least big ones).
But Zotto did you have to ask the one thing I didn't check: croziers :(
I was so sure this being some Lachnum....
Marja
Hans-Otto Baral,
17-05-2010 16:34
Re:Lachnum virgineum- or?
Croziers are not easily seen, needs some patience. Perpahs you can try to pick a bit of the hymenium and make a strong squash mount by viewing at the ascus bases.
IKI+ is not enough, was the colour more blue or more reddish? Lachnellulas are either negative or reddish (with enough iodine concentration).
Did you clearly see crystals? The hairs in Capitotricha are distinctly more thick-walled than in Lachnum, also the excipular cells are quite tough and gelatinized due to thick walls.
Zotto
IKI+ is not enough, was the colour more blue or more reddish? Lachnellulas are either negative or reddish (with enough iodine concentration).
Did you clearly see crystals? The hairs in Capitotricha are distinctly more thick-walled than in Lachnum, also the excipular cells are quite tough and gelatinized due to thick walls.
Zotto
Marja Pennanen,
17-05-2010 17:25
Re:Lachnum virgineum- or?
Oh yes, croziers ain't easy. I've only seen them a couple of times.
The fungi are already drying and I think I save the rest of them to someone, who's got better equipment and knowledge.
The IKI+ was faint blue shade at the ascus tips.
And yes, I saw some crystals. Sorry, that I didn't mention them ealier. There was a thunder a while ago and because of bad experience, I shut the computer and internet connection as fast as I could ;)
Here a poor photo of the hairs:
Marja
The fungi are already drying and I think I save the rest of them to someone, who's got better equipment and knowledge.
The IKI+ was faint blue shade at the ascus tips.
And yes, I saw some crystals. Sorry, that I didn't mention them ealier. There was a thunder a while ago and because of bad experience, I shut the computer and internet connection as fast as I could ;)
Here a poor photo of the hairs:
Marja
Hans-Otto Baral,
17-05-2010 17:28
Re:Lachnum virgineum- or?
Thanks, Marja
so this is a further type of substrate for the collective species C. bicolor.
Zotto
so this is a further type of substrate for the collective species C. bicolor.
Zotto
Marja Pennanen,
17-05-2010 17:37
Re:Lachnum virgineum- or?
Thank you folks, exspecially zotto.
It seems, that this is the second new genus for Finland collected by this green amateur this year :)
I'll take two lifepoints for that... (considering I'm right)
Very happily: Marja
It seems, that this is the second new genus for Finland collected by this green amateur this year :)
I'll take two lifepoints for that... (considering I'm right)
Very happily: Marja
Marja Pennanen,
17-05-2010 20:38
Re:Lachnum virgineum- or?
Oops,
so this is a synonym for Lachnum bicolor.
And that is one of the most common species on deciduous trees, for istance birch twigs,
New substate anyway ;)
Marja
so this is a synonym for Lachnum bicolor.
And that is one of the most common species on deciduous trees, for istance birch twigs,
New substate anyway ;)
Marja
Hans-Otto Baral,
17-05-2010 23:04
Re:Lachnum virgineum- or?
I know collections on Alnus and Corylus, but so far not Betula! Apparently the main substrate is changing with the region.
Zotto
Zotto
Milanka Tanaskovic,
18-05-2010 00:54
Re:Lachnum virgineum- or?
J’ai fait des récoltes sur Malus domestica dans un verger abandonné.
Mila
Mila
Marja Pennanen,
18-05-2010 09:01
Re:Lachnum virgineum- or?
It's really guite common on Betula twigs, but hardwood, too.
I've even found it on Rosa and as it seems on Pinus cones, too :)
I've even found it on Rosa and as it seems on Pinus cones, too :)
Björn Wergen,
19-05-2010 21:23
Re:Lachnum virgineum- or?
In 2003 I found that species on a small Corylus-twig, in 2009 I had a colection of C. rubi on Rubus ;)
cheers,
kazuya
cheers,
kazuya
Hans-Otto Baral,
19-05-2010 21:29
Re:Lachnum virgineum- or?
Dear Marja
I hope you keep this collection in order to get more sure about it. I did not get a response from Marketa, maybe she is too busy presently.
I am quite sure about the genus (Capitotricha) because of the lanceolate paraphyses and crystals, but both these characters are not very clearly seen on your pics. Either you try further images wree these two are well visible, or you can send the specimen to me.
Because this would be the first record of Capitotricha on conifers, I would very much like to clarify it.
Or are you abel to find it again?
Zotto
I hope you keep this collection in order to get more sure about it. I did not get a response from Marketa, maybe she is too busy presently.
I am quite sure about the genus (Capitotricha) because of the lanceolate paraphyses and crystals, but both these characters are not very clearly seen on your pics. Either you try further images wree these two are well visible, or you can send the specimen to me.
Because this would be the first record of Capitotricha on conifers, I would very much like to clarify it.
Or are you abel to find it again?
Zotto
Marja Pennanen,
20-05-2010 08:08
Re:Lachnum virgineum- or?
Dear Zotto,
I will send it to you. Just e-mail me an address.
I can't tell weather I'll be able to find it again - time will tell ;)
Marja
I will send it to you. Just e-mail me an address.
I can't tell weather I'll be able to find it again - time will tell ;)
Marja
Hans-Otto Baral,
20-05-2010 08:12
Re:Lachnum virgineum- or?
Thanks!!
H.-O. Baral
Blaihofstr. 42
D-72074 Tübingen
Germany
H.-O. Baral
Blaihofstr. 42
D-72074 Tübingen
Germany
Hans-Otto Baral,
25-05-2010 23:40
Re:Lachnum virgineum- or?
Dear Marja
thanks for sending me this specimen. The problem remains somewhat unsolved. The few apothecia I found on the cone appear to be L. virgineum, actually! A bit immature yet, with apically tapered hairs, asci with croziers, paraphyses lanceolate. I did not see the orange pigment in the paraphyses, but some yellowish exudate on the hair bases, strange for a Lachnum. otherwise, it does not look like a Capitotricha. The material is too poor and a bit senescent in order to make more studies. Perhaps the hymenial colour is not original? I can only hope that you make a similar collection at some day.
Zotto
thanks for sending me this specimen. The problem remains somewhat unsolved. The few apothecia I found on the cone appear to be L. virgineum, actually! A bit immature yet, with apically tapered hairs, asci with croziers, paraphyses lanceolate. I did not see the orange pigment in the paraphyses, but some yellowish exudate on the hair bases, strange for a Lachnum. otherwise, it does not look like a Capitotricha. The material is too poor and a bit senescent in order to make more studies. Perhaps the hymenial colour is not original? I can only hope that you make a similar collection at some day.
Zotto
Marja Pennanen,
26-05-2010 14:42
Re:Lachnum virgineum- or?
Dear Zotto,
thank you fore studying the specimen.
There were some L. virgineum on the cone, but they were far smaller than these and looked more stipate.
Strange behavior seems to belong to fungal life, too ;)
Some just like to be a little bit wild :)
Marja
thank you fore studying the specimen.
There were some L. virgineum on the cone, but they were far smaller than these and looked more stipate.
Strange behavior seems to belong to fungal life, too ;)
Some just like to be a little bit wild :)
Marja