Forty-three species and two subspecies of Sphagnum are reported for New Ham
pshire, including fifteen species and one subspecies documented from herbar
ium records and recent collections. Diversity at county and biophysical sub
section (ecoregion) levels is presented and areas that remain undercollecte
d in the state are highlighted. New Hampshire has a great diversity of Spha
gnum species, reflecting the diversity of climatic, geologic, and environme
ntal characteristics of the state. Several species with restricted distribu
tions are discussed, and habitats critical to these species are described f
or future conservation efforts.