Carrington Moss of years this raises the level of peat and forms a gently sloping dome (hence, raised). Such areas support a wide range of flora and fauna; "Sphagnum balticum", a medium-sized bog moss, was recorded on Carrington Moss in the 1880s, although locally it is now presumed to be extinct. Lancashire- or bog asphodel ("Narthecium ossifragum"), white beak-sedge ("Rhynchospora alba"), cranberries, bog-rosemary ("Andromeda polifolia"), and the cotton sedge have also been recorded. In 1923 species of trees recorded by E. Price Evans for the "Journal of Ecology" included English oak ("Quercus robur"), and common ash ("Fraxinus excelsior"). Undergrowth included common hazel
Aulacomnium palustre plant communities, and individual moss species often have low cover and/or frequency. Moss species with coverages of 2% to 4% can be common to dominant in boreal communities, although ribbed bog moss attains coverages as great as 40% in some boreal communities. Ribbed bog moss grows in open and forested wetland communities. In unforested northern communities, ribbed bog moss is found in sedge ("Carex" spp.) meadows, sphagnum ("Sphagnum" spp.) peatlands, heath-sedge fens, and willow ("Salix" spp.)-dominated fens. In forests, ribbed bog moss grows in the ground layer of boreal and subboreal white spruce ("Picea glauca"), black spruce ("P. mariana"), mixed