•
Blechnum sampaioanum Brade =
Cranfillia sampaioana (Brade) Gasper & V.A.O.Dittrich •
Blechnum schiedeanum (Schltdl. ex C.Presl) Hieron. =
Parablechnum schiedeanum (Schltdl. ex C.Presl) Gasper & Salino •
Blechnum schomburgkii (Klotzsch) C.Chr. =
Lomariocycas schomburgkii (Klotzsch) Gasper & A.R.Sm. •
Blechnum schottii (Colla) C.Chr. =
Lomaridium schottii (Colla) Gasper & V.A.O.Dittrich •
Blechnum sessilifolium (Klotzsch ex Christ) C.Chr. =
Parablechnum sessilifolium (Klotzsch ex Christ) Gasper & Salino •
Blechnum shaferi (Broadh.) C.Chr. =
Lomariocycas shaferi (Broadh.) Gasper & A.R.Sm. •
Blechnum smilodon M.Kessler & Lehnert =
Parablechnum smilodon (M.Kessler & Lehnert) Gasper & Salino •
Blechnum spannagelii Rosenst. =
Lomaria spannagelii (Rosenst.) Gasper & V.A.O.Dittrich •
Blechnum spicant (L.) Roth =
Struthiopteris spicant (L.) Weiss •
Blechnum spinulosum Poir. =
Doodia caudata (Cav.) R.Br. •
Blechnum sprucei C.Chr. =
Cranfillia caudata (Baker) V.A.O.Dittrich & Gasper •
Blechnum squamatum M.Kessler & A.R.Sm. =
Parablechnum squamatum (M.Kessler & A.R.Sm.) Gasper & Salino •
Blechnum squamipes (Hieron.) M.Kessler & A.R.Sm. =
Austroblechnum squamipes (Hieron.) Gasper & V.A.O.Dittrich •
Blechnum squamosissimum A.Rojas =
Parablechnum squamosissimum (A.Rojas) Gasper & Salino •
Blechnum squarrosum Gaudich. =
Doodia squarrosa Colenso •
Blechnum stipitellatum (Sodiro) C.Chr. =
Parablechnum stipitellatum (Sodiro) Gasper & Salino •
Blechnum stuebelii Hieron. =
Parablechnum stuebelii (Hieron.) Gasper & Salino •
Blechnum subcordatum (E.Fourn.) Brownlie =
Parablechnum subcordatum (E.Fourn.) Gasper & Salino ==T–V==