hello everybody,

this is the second time I have found this small fungus growing on old Digitalis purpurea stems, the first one I have seen this was in Karawankental, Austria, in May 2012. Now it is the end of October and it seems as if this species grows the whole year.

Well, just look at the photos, I have compared the two collections and they show obviously the same species. But what is it? I have tried keys to Trichonectria and Lasionectria, but everytime I thought I got it, there had been differences in spore size. Perithecia are about 0,4-0,7 mm, Wall 15-22µm, the whole surface of the perithecia has single hyaline hairs with a thickened base and 1-2 septa.  

Arr I am angry about this, the species is so clearly and characteristic, but I am not able to identify it :(

Perhaps you can help me. The brown spores you see in the last photo perhaps do not belong to the "Nectria", I did not see them in the first collection.

regards,
björn

edit: I forgot the hairs: 40-50x3,5-5µm.