Moss in smoking malt in the production of Scotch whisky. "Sphagnum" moss, generally the species "S. cristatum" and "S. subnitens", is harvested while still growing and is dried out to be used in nurseries and horticulture as a plant growing medium. The practice of harvesting "peat moss" should not be confused with the harvesting of "moss peat". "Peat moss" can be harvested on a sustainable basis and managed so that regrowth is allowed, whereas the harvesting of "moss peat" is generally considered to cause significant environmental damage as the peat is stripped with little or no chance of recovery. Some "Sphagnum"
Sphagnum all other land plants, has an alternation of generations; like other bryophytes, the haploid gametophyte generation is dominant and persistent. Unlike other mosses, the long-lived gametophytes do not rely upon rhizoids to assist in water uptake. "Sphagnum" species can be unisexual (male or female, dioecious) or bisexual (male and female gametes produced from the same plant; monoecious); In North America, 80% of "Sphagnum" species are unisexual. Gametophytes have substantial asexual reproduction by fragmentation, producing much of the living material in sphagnum peatlands. Swimming sperm fertilize eggs contained in archegonia that remain attached to the female gametophyte. The sporophyte is relatively