Long fiber Sphagnum moss is often harvested while alive. It's the dried and compressed to bales.
Peat moss is sphagnum moss that has died, sunk to the bottom of the bog, and decomposed, or rather because of the low mineral, oxygen poor, acidic conditions in the lower parts below the surface of the bog, peat is sphagnum moss that has begun the metamorphosis toward what would become coal in a million or more years. Peat moss is collected by strip mining, dewatered, compressed into bales. Canadian, Wisconsin, Michigan, Scandinavian peats are all pretty much the same. This peat is only centuries to maybe a thousand years away from being living sphagnum.
German peat is thousands of years older and has progressed further in the metamorphosis toward coal. It is approaching lignite and or leonardite in character, it should be used where it's higher content of humates and humic acids is needed.