22-04-2026 01:06
Richard VALERI
Bonjour à tous.Je vous présente cette Nectria s.
21-04-2026 22:14
Margot en Geert VullingsThis cup fungus was found on April 10, 2026, on lo
21-04-2026 13:36
Gernot FriebesHi,I am out of ideas for this one. I collected Sal
21-04-2026 13:19
Gernot FriebesHi,this Lophodermium on Typha has ascospores measu
21-04-2026 13:05
Gernot FriebesHi,this hyphomycete feels familiar but I was not a
20-04-2026 22:00
Malcolm Greaves
These pale yellow, hairy ascos were growing on cul
19-04-2026 21:23
Steve ClementsBonjour, I found this anamorphic fungus on old pl
19-04-2026 20:46
Steve Clements1 mm diameter approx spherical conidiophores on pl
12-04-2026 17:56
Hardware Tony
Found on dead stems in February earlier this year
Lentomitella?
Björn Wergen,
10-02-2013 13:27
Dear friends,I have recently found a Sordariomycete with very long ostioles and non-septated, hyaline spores with a striate surface. I thought this to be Lentomitella cirrhosa, but I am not sure because of the absence of septa. It spores meassure 14-17x4,3-5,8µm. Asci are 90-125x5-7µm, IKI -, Congo + (deliquescent), with distinct apical structure, spores uniseriate. Lots of periphyses seen in the ostiolus.
Perithecia are partly embedded into the wood surface and are 0,5-0,9 mm. Found on very wet wood (probably aquatic).
There is also a photo which shows an abnormal unispored ascus with a spore about 65x7µm.
What else is possible except Lentomitella?
thanks for help and regards,
björn
Alain GARDIENNET,
10-02-2013 14:03
Re : Lentomitella?
Perhaps you should look towards Natantiella genus ?
Alain
Alain
Alain GARDIENNET,
10-02-2013 14:13
Re : Lentomitella?
But Natantiella ligneola has smaller ascospores.
Sorry, I also think it could be Lentomitella tomentosa, but the width fits not well and you haven't said if your one is tomentous.
Conclusion : I don't know.
Alain
Sorry, I also think it could be Lentomitella tomentosa, but the width fits not well and you haven't said if your one is tomentous.
Conclusion : I don't know.
Alain
Björn Wergen,
10-02-2013 14:19
Re : Lentomitella?
Oh I am so sorry I have forgot the photo of the tomentose outer surface :(((
sorry Alain, here it is. After reading the article about Ceratostomella I have also thought it could be C. tomentosa, but I was very unsure because I did not ever heard something about this species before.
regards,
björn
sorry Alain, here it is. After reading the article about Ceratostomella I have also thought it could be C. tomentosa, but I was very unsure because I did not ever heard something about this species before.
regards,
björn
Alain GARDIENNET,
10-02-2013 22:15
Re : Lentomitella?
I read your first post again and I note you have said that ascospores are striate, aren't they ?
It's a problem because L. tomentosa has smooth ascospores. Thus the size of ascospores of Lentomitella tomentosa is : 13–16(–17) x (5–)6–7 µm.
Have you tried colouring agents or Melzer ? Sometimes, it shows septation difficult to locate.
Alain
Björn Wergen,
10-02-2013 23:26
Re : Lentomitella?
Of course, I have tried with Melzer, but there is no septation. I also thought the spores are immature and because of this without any septation. Striate ornaments were detected on several spores in H2O and especially in cotton blue, but very hard to photograph.
it seems to be a L. cirrhosa variation just without septation (?).
regards,
björn
it seems to be a L. cirrhosa variation just without septation (?).
regards,
björn