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28-11-2020 17:00

Phaeohelotium (?) on Salix caprea "Kilmarnock"
Edvin Johannesen Edvin Johannesen

Apothecia short-stipitate, pale yellow, 2-5 mm, or

28-11-2020 19:54

Hypoxylon
Blasco Rafael Blasco Rafael

Hola, He recogido este Hypoxylon creo puede ser ru

24-11-2020 14:46

Dark squamulose Geoglossum with "umbratile-spores" - Denmark
Thomas Læssøe

see: https://svampe.databasen.org/observations/101

26-11-2020 16:17

Documentacion
Blasco Rafael Blasco Rafael

Hola,  Alguno de Ustedes tiene documentación o a

27-11-2020 11:34

Allophylaria subliciformis?
DirkW DirkW

salut a tous,on dead stem of indet. herbaceous pla

27-11-2020 16:48

Curcurbitaria coronillae
Andgelo Mombert Andgelo Mombert

Bonsoir, Je suis intéressé par de la documentat

26-11-2020 17:58

Sur crottin de Chevreuil
Gérard MELARD

Bonjour à chacune et à chacun,Je vous soumets un

27-11-2020 11:16

Strossmayeria maybe.
Joaquin Martin

Hi,I found this little ascomycete on rubus, I thin

11-02-2017 13:39

Peziza cf. howsei
Nihad Omerovic

Hello,Loking for confirmation or opinions on this

26-11-2020 20:43

Ombrophila violacea?
Marek Capoun Marek Capoun

Hello everybody, I need help with the determinatio

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Lachnum on Juncus
Yannick Mourgues, 21-10-2020 00:44
Yannick Mourgues
Found today this very small Lachnum on Juncus (?: cf. the cut).

Ascus with croziers, IKI+ blue, 35-40 x 3-4 µm.

Paraphyses lanceolate, 0-10 protruding, 45x5 µm.

Spores 5,3-9,2 x 1,3-1,9 µm with Q=3-6,2 N=20.

Without (?) guttules.

Hairs with rouded apex, 90-110 µm long, 3-4 celled.

I don't see a clear solution...

Have you got an idea ?

Yannick
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Yannick Mourgues, 21-10-2020 00:50
Yannick Mourgues
Re : Lachnum on Juncus
Vertical section of Juncus (???)
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Hans-Otto Baral, 21-10-2020 08:09
Hans-Otto Baral
Re : Lachnum on Juncus
Not sure with Juncus but a monocot seems clear.

The hair points to Lachnum carneolum or L. tenuipilosum, but the former I only know from Poaceae (but Vesterholt 1994 reported it on Carex) and the latter has longer spores.

Zotto
Yannick Mourgues, 21-10-2020 16:18
Yannick Mourgues
Re : Lachnum on Juncus
Thank's Zotto.

L. carneolum is the closest species but I have seen tha it's hairs are 1-celled.

Mine are 3-4 celled.

All the rest fits well with this specie.

To be sequenced too.

Yannick
Hans-Otto Baral, 21-10-2020 20:22
Hans-Otto Baral
Re : Lachnum on Juncus
Yes, these hairs are very long indeed. The paraphyses look as if they hardly protrude beyond the asci. But thid id also the case in cf. carneolum from Serbia (21.VII.2018) with 70-80 µm long 3-septate hairs. I need to scan my old carneolum drawing for comparison.

A carnbeolum sequence exists (ITS+LSU, by Mangenot, CBS 231.54).
Yannick Mourgues, 21-10-2020 21:31
Yannick Mourgues
Re : Lachnum on Juncus
Ok. Thank's for Sequence references. ITS is enought no ?
Hans-Otto Baral, 22-10-2020 10:15
Hans-Otto Baral
Re : Lachnum on Juncus
Yes, ITS is enough