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Journal of Heredity
THE BOSTON FERN REPRODUCES ONLY BY RUNNERS FIGURE 6 . Many species of ferns reproduce both by runners and by spores, but the Boston fern produces no spores, so that new varieties arise only as bud variations of the stolons or runners, which are given off in association with each leaf. The stolons bear the roots which supply the main stem and leaves with food, and at intervals they also give rise to new plants by budding. The plant shown is a type of sword fern collected in Porto Rico for thedoi:10.1093/oxfordjournals.jhered.a102218 fatcat:ltbql43x5zhhllwntxpubotxme