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Rutstroemia? sobre madera
Rubén Martínez-Gil,
17-09-2017 12:05
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
Hans-Otto Baral,
17-09-2017 13:15
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
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
Hans-Otto Baral,
17-09-2017 13:33
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
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
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
Re : Rutstroemia? sobre madera
Such sheath has almost every Sclerotiniaceae and Rutstroemiaceae, and not only.