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Editorial: Biology, systematics, and evolution of ferns and lycophytes in the omics era
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Editorial on the Research Topic Biology, systematics, and evolution of ferns and lycophytes in the omics era Ferns and lycophytes are distinct evolutionary lineages of vascular plants, with ferns being the sister group to seed plants. The last common ancestor of seed plants, ferns, and lycophytes is the ancestral vascular plant. Historically, both lineages have been studied together and treated as the paraphyletic group 'pteridophytes', mainly because both lineages are sporebearing, and share many other biological features, such as the overall life cycle (PPG I, 2016). The publication of the first complete genome of a fern took longer than other groups of embryophytes (Li et al., 2018). The first two reported genomes, from the heterosporous and aquatic Azolla and Salvinia, are atypical among ferns as they are less than tenfold smaller than the average fern genome (Li et al., 2018). The first homosporous fern genomes were only recently published (
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