Hi,

this is a tricky one since there is only the asexual morph present. I think it is a species of the N. cinnabarina complex. Based on the paper by Hirooka et al. (2011) it seems like N. asiatica looks somewhat similar but the authors do mention that both the sexual and asexual morph need to be examined for identification. I'm hoping that someone can confirm that I'm at least on the right track here. Thanks!

The collection was sent to me and initially the host wasn't known but I think it should be Acer based on the buds and wood anatomy. The conidia measure about 6-8 µm in length.

Best wishes,
Gernot