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Found on Robinia pseudoacasia together with Diapor
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Thomas Læssøehttps://svampe.databasen.org/observations/10527903
White-black pyrenos
Juuso Äikäs,
06-08-2019 23:57
Andrew N. Miller,
07-08-2019 00:32
Re : White-black pyrenos
Lasiosphaeria lanuginosa
https://www.inhs.illinois.edu/files/6813/2111/8750/Lasiosphaeria_ovina_Miller_Huhndorf_Mycologia2004.pdf
Cheers,
Andy
https://www.inhs.illinois.edu/files/6813/2111/8750/Lasiosphaeria_ovina_Miller_Huhndorf_Mycologia2004.pdf
Cheers,
Andy
Juuso Äikäs,
07-08-2019 08:23
Re : White-black pyrenos
Thanks!
Hans-Otto Baral,
07-08-2019 09:47
Re : White-black pyrenos
Hi Andrew and Juuso
I would have thought L. ovina (L. lanuginosa I do not know). What are the differences? You speak of the L. lanuginosa complex which is genetically so close to L. ovina that it might be difficult by morphology alone to distinguish it, but why are you sure here?
Zotto
I would have thought L. ovina (L. lanuginosa I do not know). What are the differences? You speak of the L. lanuginosa complex which is genetically so close to L. ovina that it might be difficult by morphology alone to distinguish it, but why are you sure here?
Zotto
Andrew N. Miller,
07-08-2019 14:26
Re : White-black pyrenos
Zotto,
I am sure because I am the World expert on this group...ha! The tomentum is tight in L. ovina, but loose and can envelop multiple ascomata in L. lanuginosa. Ascospores in L. ovina have short, awl-like appendages vs. long, lash-like appendages in L. lanuginosa.
Cheers,
Andy
I am sure because I am the World expert on this group...ha! The tomentum is tight in L. ovina, but loose and can envelop multiple ascomata in L. lanuginosa. Ascospores in L. ovina have short, awl-like appendages vs. long, lash-like appendages in L. lanuginosa.
Cheers,
Andy
Ethan Crenson,
07-08-2019 15:27
Re : White-black pyrenos
Thank you this is very helpful! Looking back through some collections that I labeled L. ovina, I found this image. The tomentum appears "tight", but the fruiting bodies are in some cases convergent, so that the tomentum appears to envelope multiple ascomata--or at least it could be construed that way. Which species would you say this is?
Hans-Otto Baral,
07-08-2019 16:30
Re : White-black pyrenos
o.k., thanks! But the appendages are invisible on the present photos. And how dense the tomentom here is?
Isn't it that Breitenbach & Kränzlin have L. lanuginosa then?
Did you ever see in my folder ovina? I have there awl-like appendages in HB 7942. In a sample by F. Schumm 16.IX.2012 the appendages are invisible (dead state), but the tomentum covers several perithecia.
Isn't it that Breitenbach & Kränzlin have L. lanuginosa then?
Did you ever see in my folder ovina? I have there awl-like appendages in HB 7942. In a sample by F. Schumm 16.IX.2012 the appendages are invisible (dead state), but the tomentum covers several perithecia.
Andrew N. Miller,
08-08-2019 15:40
Re : White-black pyrenos
Ethan, I would name this L. lanuginosa, but look for lash-like appendages on the ascospores to confirm.
Andy
Andy
Andrew N. Miller,
08-08-2019 15:52
Re : White-black pyrenos
Zotto,
The lash-like appendages on the ascospores are not obvious in these photos, but can be seen by the well-trained eye... ;o)
Breitenbach & Kränzlin correctly show L. ovina with tight, bright white tomentum and spores with short, awl-like appendages.
No, never saw it.
Cheers,
Andy
The lash-like appendages on the ascospores are not obvious in these photos, but can be seen by the well-trained eye... ;o)
Breitenbach & Kränzlin correctly show L. ovina with tight, bright white tomentum and spores with short, awl-like appendages.
No, never saw it.
Cheers,
Andy
Hans-Otto Baral,
08-08-2019 16:02
Re : White-black pyrenos
Thanks!
Here:
https://drive.google.com/drive/folders/0B5SeyOEkxxZhYVZub0N1aGY5YTg
Go to 8a Sordariales, -> Lasiosphaeriaceae ....
Here:
https://drive.google.com/drive/folders/0B5SeyOEkxxZhYVZub0N1aGY5YTg
Go to 8a Sordariales, -> Lasiosphaeriaceae ....
Andrew N. Miller,
08-08-2019 16:37
Re : White-black pyrenos
Thanks! I see the awl-like appendages in HB 7942 (L. ovina), but there appears to be long, lash-like appendages in F. Schumm 16.IX.2012 (L. lanuginosa).
Cheers,
Andy
Cheers,
Andy
Hans-Otto Baral,
08-08-2019 16:43
Re : White-black pyrenos
Yes indeed, it seems so! I would like to see L. lanuginosa in the living state. It seems the appendage is about of double length than L. ovina.
Andrew N. Miller,
08-08-2019 16:46
Re : White-black pyrenos
Yes, correct.
Andy
Andy