.. in subarctic forest at side of small stream, acid conditions. 

The asci are brightly hemiamyloid and bear croziers. The excipulum is of blue-green (likely Xylindein as in other species) textura globulosa, in KOH the color is fading to unspectacular olive-greenish. There is no (!) ionomidotic reaction (see below).
The spores contain few small drops in living stage, in dead stage they are empty. I measured (hopefully not yet shrinked, see below) a size of 5-8(9)/(2)2,5-3,2 µm.
Paraphyses and excipular cells contain some guttules in living stage, they vainsh in dead stage.

I had some problems with this quite scanty specimen. In the first two slides nearly all asci ejected their spores quite rapidly. The free swimming spores would not be calm and could not be photographed satisfactorily. Otherwise the excipular structure contained a lot of exsudate so they could first not be observed well. But in the end I have got most details. The spore fotos are mostly dead spores. 

In this forum I found a similar contribution:
http://www.ascofrance.fr/search_forum/72918#

The apothecia found by Andreas Gminder are larger, (mine were up to about 1 mm large) and I found no ionomidotic reaction. In my collection the porus is reacting beautifully red, Andreas noted dirty red. In other respects both collections could be the same species, both on Picea in cold habitats.

Does somebody have a species name here - or is this to be considered undescribed?

Yours, Lothar