Thelypteris tetragona (Sw.) Small [ Polypodium tetragonum Sw.]
Lowe, E.J., Ferns [a history of Ferns]: British and exotic (1856-1860)

vol. 1
t. 46 p. 135
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name recognized:
1011455 Thelypteris tetragona (Sw.) Small
name recognized (basionym):
826879 Polypodium tetragonum Sw.

name cited:
826879 Polypodium tetragonum Sw.

family: Polypodiaceae
subfamily: Polypodioideae
tribe: Polypodieae
epithet: tetragonus,-a,-um

link_details: details
Illustration contributed by:
Smithsonian Institute, Washington, D.C., U.S.A.
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homotypic synonyms:
Aspidium tetragonum (Sw.) Sw.; Dryopteris tetragona (Sw.) Kuntze; Dryopteris tetragona (Sw.) Urban; Goniopteris tetragona (Sw.) C. Presl; Nephrodium tetragonum (Sw.) Keyserl.; Phegopteris tetragona (Sw.) Fée; Phegopteris tetragona (Sw.) Mett.; Polypodium tetragonum Sw.;
heterotypic synonyms:
Dryopteris subtetragona (Link) Maxon; Goniopteris feei L’Herm. ex Fée; Goniopteris subtetragona (Link) Vareschi; Nephrodium androgynum (Poiret) Diels; Nephrodium tetragonum C. Presl; Polypodium androgynum Poiret; Polypodium smithianum Heward; Polypodium subtetragonum Link; Thelypteris subtetragona (Link) E.P. St. John;
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6 1011455 Thelypteris tetragona (Sw.) Small (Sw.) Small [Polypodium tetragonum Sw.]
E.J. Lowe, Ferns, vol. 1 : p. 135, t. 46 (1839)