No xylem and phloem (no roots/stems/leaves), gametophyte is dominant in alternation of generations life cycle, sporophyte generation dependant on gametophyte, water is needed for reproduction, dispersal of species by spores.
The liverworts. Example: Marchantia. 10,000 species.
The mosses. 12,000 species of mosses.
Have xylem and phloem (have roots/stems/leaves), sporophyte generation is dominant in alternation of generations life cycle.
Seedless Vascular Plants
In addition to vascular plant attributes: water needed for reproduction, gametophyte is independent, do not produce seeds, dispersal of species by spores.
Whisk ferns. Example: Psilotum nudum.
Club Mosses. 1,000 species. Example: Lycopodium, Isoetes, Selaginella.
Horsetails. 155 species. Examples: equisetum.
Ferns. 12,000 species. Examples: all ferns.
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