Accès membres

Mot de passe perdu? S'inscrire

06-07-2020 05:51

Yulia Lytvynenko

Dear friends.Looking for a copy of the following w

05-07-2020 17:52

Juuso Äikäs

I found these growing on dead, fallen canes of Rub

05-07-2020 18:06

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia, recolectado

05-07-2020 10:31

Castillo Joseba Castillo Joseba

me mandan el material de Galicia, recolectado en h

03-07-2020 17:47

Thomas Læssøe

see: https://svampe.databasen.org/observations/10

27-06-2020 13:21

Hardware Tony Hardware Tony

I wondered if anyone could help me with this ascom

04-07-2020 14:34

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, I would like to ask you for help with idet

03-07-2020 21:06

Castillo Joseba Castillo Joseba

me mandan el material seco,, recolectado en plante

03-07-2020 20:54

Castillo Joseba Castillo Joseba

me mandan el material seco recolectado en rama de

03-07-2020 22:51

Viktorie Halasu Viktorie Halasu

Hello,I'd like to ask for help with a lichen. In w

« < 1 2 3 4 5 > »
Melanconis alni?
Enrique Rubio, 07-04-2013 17:47
Enrique RubioDear friends
Can this fungus with so short and roundish appendages be Melanconis alni ?
It grew on Alnus glutinosa and the valsoid stromata have yellowish disc 


Thanks again
  • message #22856
  • message #22856
  • message #22856
Björn Wergen, 07-04-2013 18:22
Björn Wergen
Re : Melanconis alni?
Hi Enrique,

your collection more reminds me on M. chrysostroma than on M. alni, which has very distinct and long appendages.

regards,
björn
Enrique Rubio, 07-04-2013 18:27
Enrique Rubio
Re : Melanconis alni?

Hi Björn

But chrysostroma is not a fungus on Carpinus? My host is Alnus..
Chris Yeates, 07-04-2013 20:25
Chris Yeates
Re : Melanconis alni?
Good evening Enrique
The spores seem a little on the large size, but in general it looks all right; do you have Wehmeyer's 1941 "Revision"?
cordialement
Chris
Enrique Rubio, 07-04-2013 20:43
Enrique Rubio
Re : Melanconis alni?
Good evening, Chris
Yes. I have read Wehmeyer's paper but he says 'the spores often show terminal appendages.......... wich measure 3-7 x 2-4.....'
The appendages of my spores are shorter, up to 2 microns only

Thanks!
Chris Yeates, 07-04-2013 20:55
Chris Yeates
Re : Melanconis alni?
he also says thats they are evanescent or may be completely lacking; I wonder how important the length is - while looking at various Gnomonia species recently it has struck me that appendage length can be a very plastic character - I stand to be corrected.
best wishes
Chris
Jaklitsch Walter, 08-04-2013 13:19
Re : Melanconis alni?
Melanconiella flavovirens on Corylus, very typical.

See here http://link.springer.com/article/10.1007/s13225-012-0175-8
Unfortunately not open access, but I can send a copy on request.
Best regards,
Walter
Enrique Rubio, 08-04-2013 14:23
Enrique Rubio
Re : Melanconis alni?
Thanks, Walter!!
Jaklitsch Walter, 08-04-2013 15:09
Re : Melanconis alni?
You are welcome.

Perhaps a few words about this topic:
we know since 2002 (Castlebury et al., Mycologia) that Melanconis is polyphyletic.
Most species are in Melanconiella. We had to "kill" M. chrysostroma, unfortunately.

We have not published on Melanconis yet, but there are not so many species left. Some like e.g. M. carthusiana do not belong to these genera despite superficial similarity of both teleo- and anamorphs.

Best regards, Walter
Enrique Rubio, 08-04-2013 17:32
Enrique Rubio
Re : Melanconis alni?
Thanks again