Nectria on Salix bark - Forum ASCOFrance

17-11-2025 19:14

Cheilymenia crucipila

herman lambert

Apothécie discoïde 0.6 cm diam., orangeFace hym�

17-11-2025 21:57

Hyaloscypha fuckelii var. alniseta

Philippe PELLICIER

Bonjour,Récolté sur bois de feuillu mort dur, no

16-11-2025 21:09

Hyphomycete on twig of abies

Robin Isaksson

Anyone recognize this acc. to pictures.? Found on

17-11-2025 21:46

Lachnum impudicum

Philippe PELLICIER

Bonjour,Récolté sur bois pourrissant de feuillu

14-11-2025 16:26

Small species on Cytisus scoparius

Marian Jagers

Hello everyone, On dead wood of Cytisus scoparius

15-11-2025 23:22

Hymenoscyphus macroguttatus? on Phytolacca

Mario Filippa

Hello,this is what I think to be Hymenoscyphus mac

15-11-2025 20:25

Cryptosphaeria ligniota?

Riet van Oosten

Hello, Found by Laurens van der Linde, Nov. 2025

15-11-2025 09:21

Anamorph on Buxus.

Josep Torres

Hello.An anamorph resembling Capronia is sprouting

14-11-2025 18:31

literature request

Lothar Krieglsteiner

Hello,can somebody provide me with a file of:Rothe

12-11-2025 21:47

sp en restos de poda

ruiz Jose

Hola a todos, me envían esta colección en resto

Nectria on Salix bark

Enrique Rubio, 29-01-2016 01:39

Hi again

These small (up to 0.35 mm), superficial, hairy, scattered perithecia grew on Salix bark, The ental layer of the walls turns lilac in KOH 10%, Ascospores verrucose. I don't know its anamorphic stage.

Have you some idea for help me?

Thanks in advance

Christian Lechat, 29-01-2016 06:00

Re : Nectria on Salix bark

Hi Enrique,
very nice specimen and images!
Maybe I know this species, I have a specimen collected by J.-P. Priou on Ulex, which resembles to yours. It could be a new genus in the Nectriaceae, which is in the course of study.

Best regards,
Christian

Enrique Rubio, 29-01-2016 09:33

Re : Nectria on Salix bark

Hi Christian

Is the lilac reaction of the internal perithecial layer present in your specimens?

Thanks a lot

Christian Lechat, 29-01-2016 10:07

Re : Nectria on Salix bark

Yes enrique, inner region of ascomatal wall turning purple in KOH and yellow in lactic acid.

Christian

Enrique Rubio, 29-01-2016 10:21

Re : Nectria on Salix bark

Thanks Christian

Marian Jagers, 22-02-2017 23:07

Re : Nectria on Salix bark

It looks like, I have found these funny perithecia too, on dead branches of Cytisus scoparius too (Enschede, The Netherlands). They are about the same sizes.
Ascospores are verrucose, mature a bit pink, some 2 times septated, 23 – 31,5(-37) x 9 11(– 12,5) µm. Asci J-, 8-spored, 80-94x14-16 µm. The innerwall purple in KOH.

Christian Lechat, 23-02-2017 05:25

Re : Nectria on Salix bark

Hi Marian,
your specimen seems identical to those collected by Jean Paul Priou on "pyreno" on Ulex and by Enrique on Allantoporthe tessella on Salix.

Is your specimen fungicolous?

Phylogenetic analysis places this fungus in the genus Macroconia (Nectriaceae).

All the best,
Christian

Marian Jagers, 23-02-2017 09:42

Re : Nectria on Salix bark

Hi Christian,

Sorry, I forgot to mention this. Indeed on stroma of Diaporthe inaqualis? or perhaps a Didymospaeria sp.? Both are rather common on this branches.
Most of the perithecia are empty so it is difficult to check without much dammage. First I hope to culture some more specimens of this Macroconia.
Thanks.

Marian

Accès membres

Forum AscoFrance