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09-01-2026 17:41

Arnold Büschlen

Hallo, F. dilatata wird von vielen Bryoparasiten

09-01-2026 10:08

Blasco Rafael Blasco Rafael

Hola, en el mismo habitat que la anteriorRetamaDia

08-01-2026 21:22

Blasco Rafael Blasco Rafael

Hola, He recogido esta muestra de Orbilia sobre Re

07-01-2026 10:24

Danny Newman Danny Newman

Pezicula sp. on indet. hardwood Appalachian Highl

07-01-2026 22:22

Danny Newman Danny Newman

Tatraea sp. on indet. hardwood The Swag, Great Sm

07-01-2026 17:29

Marc Detollenaere Marc Detollenaere

Dear Forum,On a barkless Populus I found some smal

10-11-2021 17:33

Riet van Oosten Riet van Oosten

Add-on topic http://www.ascofrance.com/forum/7059

07-01-2026 10:05

Danny Newman Danny Newman

cf. Chaetospermum on XylariaCosby Campground, Grea

06-01-2026 20:54

Thierry Blondelle Thierry Blondelle

Bonjour à tous et meilleurs voeux pour cette nouv

02-01-2026 17:43

MARICEL PATINO

Hi there, although I couldn't see the fruitbody, 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