Ok, this one, I've had a long history with this one now, and its escaped clear id, because - it does not have clamp connections. Which is just the craziest character for id, thanks to Smith and Singer. Mostly because for most mushrooms, in most places - you aren't going to see clamp connections. But if the 'shroom has clamps, the place you are going to see them is in the small outer fibrous hyphae, that can grow without restriction. In the Galerina now I've found the place to be sure is in the fibrous hyphae coating the base of the stipe. There in the small free hyphae, if there are clamps they will be there for every cell wall. In these they are not there for these hyphae. This puts these into section Tubariopsis (which makes sense I guess, since these guy look a bit like Tubaria.)