''Nephrolepis biserrata'' (giant swordfern, 长叶肾蕨) is a tropical

fern A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes exce ...

, endemic to

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, the

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, and

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. Its stipes are grayish brown and 10–50 cm × about 4 mm in size, with brownish-green, papery lamina that are 14–30 cm wide × 0.7–2 m in length, but has occasionally attained a length of twenty-seven feet (eight meters). This is the largest of all the sword ferns and it often is labeled, ''Macho Fern'', at nurseries.https://www.etsy.com/listing/874738483/macho-fern-potted-nephrolepis-biserrata macho fern, Nephrolepis biserrata after its aggressive growth nature when compared to ferns such as the Boston Sword Fern, Nephrolepis exaltata that is planted more commonly.

Synonyms

* ''Aspidium acuminatum'' Willd. * ''Aspidium acutum'' Schkuhr * ''Aspidium biserratum'' Sw. * ''Aspidium ensifolium'' Schkuhr * ''Aspidium guineense'' Schumach. * ''Aspidium punctulatum'' Sw. * ''Hypopeltis biserrata'' (Sw.) Bory * ''Lepidoneuron biserratum'' (Sw.) Fée * ''Lepidoneuron punctulatum'' (Poir.) Fée * ''Lepidoneuron rufescens'' (Schrad.) Fée * ''Nephrodium acuminatum'' (Willd.) C. Presl * ''Nephrodium acutum'' (Schkuhr) C. Presl * ''Nephrodium biserratum'' (Sw.) C. Presl * ''Nephrodium punctulatum'' (Sw.) Desv. * ''Nephrodium rufescens'' Schrad. * ''Nephrolepis acuminata'' (Willd.) C. Presl * ''Nephrolepis acuta'' (Schkuhr) C. Presl * ''Nephrolepis biserrata'' var. ''biserrata'' * ''Nephrolepis biserrata'' subsp. ''punctulata'' (Poir.) Bonap. * ''Nephrolepis ensifolia'' (Schkuhr) C. Presl * ''Nephrolepis exaltata'' var. ''biserrata'' (Sw.) Baker * ''Nephrolepis hirsutula'' var. ''acuta'' (Schkuhr) Kuntze * ''Nephrolepis hirsutula'' var. ''biserrata'' (Sw.) Kuntze * ''Nephrolepis mollis'' Rosenst. * ''Nephrolepis punctulata'' (Poir.) C. Presl * ''Nephrolepis rufescens'' (Schrad.) C. Presl ex Wawra * ''Polypodium neprolepioides'' Christ * ''Polypodium punctulatum'' Poir. * ''Tectaria fraxinea'' Cav.

References

* ''Gen. Fil.'' pl. 3 1834.
The Plant List

eFloras entry
* Calero, K., Pitzer, T., & Alberte, J. (2012). General Biology II Lab Manual (2nd ed.). McGraw Hill. biserrata Ferns of Asia Ferns of Africa Ferns of Oceania Ferns of the Americas Flora of Central America Flora of the Caribbean Flora of South America Flora of tropical Asia Ferns of Brazil Ferns of Mexico Ferns of the United States {{Polypodiales-stub