Recently I have become very interested in the mycobiota of Pteridophytes (not only ascomycetes); while collecting at the same site where the 'Calloriella' was found - http://www.ascofrance.com/search_forum/16442? I found damp fronds of Dryopteris dilatata well populated by Allophylaria campanuliformis. There was also a Hymenoscyphus species (PDF attached) which while close to one of the many forms of H. scutula does not seem 'right', and as has happened before one wonders to what an extent the fungi which occur on ferns do not tend to overlap with those on angiosperms.
Distinctive features were the asymmetrical ascospores and the bead-like VB's in both paraphyses and marginal cells; occasionally there was an anomalous spore (one figured), presumably formed by the conjunction of one or more spores in the ascus.

As ever, any suggestions are very welcome.

Cordialement
Chris