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27-03-2024 22:53

Charles Aron Charles Aron

Hi All,Recently I came across these minute, setose

26-03-2024 17:14

Juuso Äikäs

These little black ascos were growing on a dead, d

25-03-2024 13:41

B Shelbourne B Shelbourne

• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a

25-03-2024 21:27

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2024

26-03-2024 14:37

DAVID MARCOS DAVID MARCOS

Spores (telles qu'elles apparaissent à l'intérie

24-03-2024 08:27

Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-03-2024 11:06

michel bertrand

Bonjour, Malgré de nombreuses recherches, je n'a

25-03-2024 14:08

Ursula Kozik

Bonjour et bonne journée, On m'a envoyé une tro

25-03-2024 03:56

B Shelbourne B Shelbourne

• Scuttelinia: Macro and habitat.• S. scutella

25-03-2024 20:21

DAVID MARCOS DAVID MARCOS

Bonjour, je m'appelle David et je débute dans l'i

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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
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  • message #22856
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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