Flora of North America North of Mexico Volume 28 - Bryophyta, part 2 - includes treatments prepared by 44 authors covering 698 species in 206 genera classified in 48 families. Descriptions for all of the families, genera, and species are provided plus occurrence maps for species are included and 53% of the species are illustrated. Keys are included to aid in the identification of genera in families and species within the genera; an overall key to the 333 genera ofmosses known from North America north of Mexico is also included.