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A cultivar of the sword fern Nephrolepis exaltata, having arching or drooping pinnate fronds and popular as a houseplant.
[So called because the cultivar was first discovered in a lot of fern plants shipped to Cambridge, Massachusetts, and subsequently propagated by a local distributor.]
a variety of sword fern, Nephrolepsis exaltata bostoniensis, having long, narrow, drooping fronds.
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|Noun||1.||Boston fern - a sword fern with arching or drooping pinnate fronds; a popular houseplant|
sword fern - any of several tropical ferns having more or less sword-shaped fronds including one from which the Boston fern developed