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17-09-2017 12:05

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas fotos de una Rutstroemia?

16-09-2017 13:15

Lothar Krieglsteiner Lothar Krieglsteiner

... collected this week on a thick Picea log in

16-09-2017 23:47

Cvenkel Miran

http://agrozoo.net/jsp/Galery_one_image.jsp?id_gal

17-09-2017 17:27

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Je vous soumets cette belle petite pézize

16-09-2017 11:57

Lothar Krieglsteiner Lothar Krieglsteiner

... collected this week by Matthias Theiß during

15-09-2017 19:59

Chris Yeates Chris Yeates

Bonsoir tousfollowing on from a recent find of Kar

16-09-2017 13:22

Lothar Krieglsteiner Lothar Krieglsteiner

... collected twice in the last week, both times o

16-09-2017 12:59

Lothar Krieglsteiner Lothar Krieglsteiner

... collected this week, on (another) Abies log, s

16-09-2017 13:31

Lothar Krieglsteiner Lothar Krieglsteiner

... at first glance looking the same way than the

13-09-2017 21:37

Chris Yeates Chris Yeates

Bonsoir tousthis rather difficult-to-see asco was

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Rutstroemia? sobre madera
Rubén Martínez-Gil, 17-09-2017 12:05
Rubén Martínez-Gil

Hola a todos.


Subo unas fotos de una Rutstroemia? que encontré ayer sobre ramitas sin identificar, en bosque mixto de F sylvatica-Q pyrenaica, entre otros.


Esporas de 20-23 x 5,3-6,2 micras.


Ascas amiloides, pleurorrincas.


¿Qué les parece?


Gracias por su ayuda.


Rubén

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Hans-Otto Baral, 17-09-2017 13:15
Hans-Otto Baral
Re : Rutstroemia? sobre madera
Great! Rutstroemia for sure, but I do not remember such with navicular spores.

Quercus and Fagus you should be able to distinguish with the wood pores (ring-pored or not).  Did you look at a broken twig?

Zotto
Martin Bemmann, 17-09-2017 13:28
Martin Bemmann
Re : Rutstroemia? sobre madera
Why not R. firma? esp. when Quercus is possibly involved. See White's drawing attached.

Regards
Martin
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Hans-Otto Baral, 17-09-2017 13:33
Hans-Otto Baral
Re : Rutstroemia? sobre madera
You are right, Martin, my impression was that the spore ends are acute, but they are rather obtuse. 

The strange thing is that R. firma usually has curved spores, but I saw also populations with straight spores. These here are completely straight. I wonder if this is all the same.

R. firma was also mixed with R. alnobetulae in earlier times, who knows how many taxa exist.

I suspect that DNA would help....
Zotto
Martin Bemmann, 17-09-2017 13:42
Martin Bemmann
Re : Rutstroemia? sobre madera
The spores in Rubén's collection seem to have a sheath (fig. 6). Is this confirmed for R. firma?
Hans-Otto Baral, 17-09-2017 16:53
Hans-Otto Baral
Re : Rutstroemia? sobre madera
Such sheath has almost every Sclerotiniaceae and Rutstroemiaceae, and not only.
Rubén Martínez-Gil, 18-09-2017 17:52
Rubén Martínez-Gil
Re : Rutstroemia? sobre madera

Gracias por su ayuda, Zotto, Martin.


Subo unas fotos del palito donde las encontré. Mide 5 mm de diámetro. No tengo claro que sea de Quercus o Fagus.


La dejo de momento como R firma.


Saludos


Rubén

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