Bonjour,
Cet asco était sur des rameaux dans une zone humide. Il ressemble à un petit Cudoniella clavus, mais les spores ne sont pas tout à fait correct. Hymenoscyphus peut-être?
We found this stalked asco in some numbers on woody twigs in a wet area of mixed woodland. The apothecia were 1-2.5 mm in diameter, and the stalks 1-1.25 mm in length. The stem base was a little darker, but not blackened. Asci were dextinoid in Lugol, biseriate, approx 100 x10 um, without croziers, inoperculate and not blueing distinctly at the tips. It was hard to tell if the blueing was simply an artefact of the LED lighting of the microscope. Spores were dropped on a slide overnight, and were 14-17.5 x 5-5.5 in water, and 15-17 x 4-4.5 in Lugol. Mostly they contained 4 oil drops. Paraphyses were filiform, about 3 wide, septate, and with some branching. Subiculum from the outside edge of the cups was of long cells, varying from 2 to 10 um wide.
Cudoniella clavus is described in Fungi of Switzerland as having spores without drops, 9.5-15 long. Perhaps this is a Hymenoscyphus?
Cordialement,
Steve