Fine grass in wet heath/bog?

Fine grass in wet heath/bog?

Observation - Fine grass in wet heath/bog? - UK and Ireland. Description: Update: I should add that it was no more than about 3/10cm in height, uniformly, making me think it's not a cotton grass (E. angustifolium was growing at the site as well for easy comparison!)

Update:

I should add that it was no more than about 3"/10cm in height, uniformly, making me think it's not a cotton grass (E. angustifolium was growing at the site as well for easy comparison!)