Granulated peat moss, is the type of peat moss commonly sold in the USA for use in gardens. It is Sphagnum peat moss, usually from Canada, which has been dried and then ground to a granular powder consistency, before being bagged for sale to gardeners across the country.
In the USA, other grades that are less common are small, coarse chunks and bricks or blocks. Many people here in the USA do not realize that peat moss does not come from the bog in the form of a brown, granular powder.
This is a link to one supplier of this "chunky Canadian peat moss" (they have an image on their page) :
I do not regularly use peat moss chunks for CP, instead, I use the commonly available granulated peat moss and insert a layer of pumice like a vertical divider to increase aeration of the root zone.