Lothar is right, it is Allophylaria macrospora, which rareöy occurs on herbs. Lothar, you found it on Epilobium in the Rhön, 7.X.2001 (HB 7056).

It is strange that three of the four samples in my folder were from Epilobium angustifolium, and one on Lysimachia.

Perhaps it could be a separate species, although I cannot see a difference.

Hello all

Here in Yorkshire (Northern England) all 7 records were made on Chamerion angustifolium - e.g. http://www.ascofrance.com/base-de-donnees-fiche/3069

Chris

That would be a case for a sequencing study...

I see Dennis 1978 and Ellis & Ellis 1985 have it also on Epilobium angustifolium!

Hi

I found, several times, this species on wood Populus

best

Mirek

I really wonder about these two groups, Epilobium vs. various woody hosts. But the third group is that of monocots (Typha, Schoenoplectus and mainly Juncus). In the latter group the spores are narrower (*20-30 x 3.5-5.7), but the other two have the same spores. I once studied the type of Helotium canum Kirschstein which was on Salix and which I found to be a synonym. In the same paper, Kirschstein described Phialea macrospora on Populus, only one page before. Kirschstein's descriptions are brief and it is unclear why he placed them in two different genera. Spore size is different but those of H. canum are measured too small (15-20 x 4-6), I found them 18-22 x 5.3-6.2, while in P. macrospora Kirschstein measured 20-22 x 4. Kirschstein described the excipulum as prosenchymatic in both species, and wrote "quite tough" in H. canum but nothing in P. macr. H. canum was said to be 0.5-1 mm diam. while I found m´rehydrated 0.35-0.5. For P. macr. he only wrote "very small".

For herbicolous collections I do not know a name in the literature.