Schwartsburd, P. B.; Yañez, A.; Prado, J.

Formal Recognition of Six Subordinate Taxa Within the South American Bracken Fern, Pteridium Esculentum (P. Esculentum subsp. arachnoideum s.l.—Dennstaedtiaceae), Based on Morphology and geography

. Phytotaxa 2018, 333, 22–40.