A fern is a member of a group of vascular plants that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients, in having branched stems and in having life cycles in which the sporophyte is the dominant phase.
Division Lycopodiophyta or Lycophyta (lycophytes; club mosses and allies) Primitive, seedless vascular plants with true roots, stems, and leaves; sporangia associated with leaf bases, the fertile leaves often aggregated to form cones; distributed worldwide but concentrated in the tropics.