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Seedless vascular plants


seedless vascular plants: the division Pteridophyta that includes the ferns.
semen: a fluid secretion containing sperm and secretions from the prostate gland, seminal vesicles, and Cowper's glands.
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vascular plants (tracheophytes)
seedless vascular plants
Lycopodiophyta - clubmosses
Equisetophyta - horsetails
Pteridophyta - "true" ferns
Psilotophyta - whisk ferns
Ophioglossophyta - adderstongue ferns ...
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