| Blechnum "orientale" L. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum acanthopodum T.C.Chambers & P.A.Farrant | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum acrodontum C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum acuminatum Sturm | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum acuminatum Fée | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum acutiusculum C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum acutum (Desv.) Mett. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum adnatum Reinw.; de Vriese | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum aduncum Liebm. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum aequatoriense A. Rojas | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum aggregatum Tindale | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum agrostifolium Goldm. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum alpinum Mett. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum alternans C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum amabile Makino | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum ambiguum Kaulf. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum andicola C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum andinum (Baker) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum angustatum Schrad. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum angustifolium Willd. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum angustifolium (Kunth) Hieron. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum angustifrons Fée | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum anthracinum R.C. Moran | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum antillanum Proctor | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum appendiculatum Willd. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum araucanum C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum arborescens (Klotzsch) Hieron. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum archboldii C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum arcuatum J. Rémy & Fée | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum areolare C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum areolare Copel. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum articulatum (F. Muell.) S.B. Andrews | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum asperum Sturm | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum asplenioides Sw. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum atherstoni Pappe & Rawson | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum atropurpureum A.R. Sm. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum attenuatum (Sw.) Mett. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum attenuatum var. attenuatum  | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum attenuatum var. giganteum (Kaulf.) Bonap. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum auratum (Fée) R.M. Tryon & Stolze | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum auratum subsp. columbiense (Hieron.) R.M. Tryon & Stolze | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum aureosquamum A. Rojas | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum auriculatum Cav. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum auriculatum var. hastatum (Kaulf.) Looser | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum auriculatum var. trilobum Osten & Herter | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum australe L. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum australe subsp. auriculatum (Cav.) de la Sota | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum australe f. genuina Hieron. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum australe var. hastata (Kaulf.) Hieron. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum australe f. mucronato-dentata Rosenst. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum australe var. triloba Hicken | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum austrobrasilianum de la Sota | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum bakeri C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum bakeri var. glabra Bonap. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum bamlerianum Rosenst. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum banisterianum Poir. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum banksii Mett.; Diels | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum bibreae Mett. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum bicolor M. Kessler & A.R. Sm. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum biforme H. Christ | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum binervatum (Poir.) C.V. Morton & Lellinger | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum binervatum subsp. acutum (Desv.) R.M. Tryon & Stolze | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum binervatum subsp. fragile (Liebm.) Nissen | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum binervatum subsp. fragile (Liebm.) R.M. Tryon & Stolze | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum binerve C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum blechnoides (Bory) Keyserl. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum blechnoides (Lag. ex Sw.) C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum blechnoides var. achalense (Hieron.) Looser | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum blechnoides var. fernandezianum Looser | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum blechnoides var. gracilipes Rosenst. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum blumei T.Moore | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum bolivianum M. Kessler & A.R. Sm. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum boreale Sw. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum borneense C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum boryanum Schltdl. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum bradei Markgr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum brasiliense Desv. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum brassii Copel. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum brevifolium G.Kunkel | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum brooksii C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum buchtienii Rosenst. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum calophyllum Langsd. & Fisch. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum camfieldii Tindale | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum campylotis (Kunze) J. Sm. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum capense Burm. f. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum capense (L.) Schltdl. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum carolinianum Walter | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum cartilagineum Sw. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum castaneum Makino & Nemoto | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum castaneum Copel. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum × caudatum Cav. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum ceteraccinum Raddi | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum chambersii Tindale | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum chauliodontum Copel. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum chilense (Kaulf.) Mett. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum chilense var. reedii Phil. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum chiriquanum (Broadh.) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum christensenii Ching | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum christii C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum ciliatum C. Presl | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum cochabambense M. Kessler & A.R. Sm. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum cognatum C. Presl | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum colensoi N.A. Wakef. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum colombiense Hieron. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum colubrinum Blanco | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum columbiense var. bogotense Hieron. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum confine C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum confluens Schltdl. & Cham. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum confusum Brownlie | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum contiguum Mett. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum corbassonii Brownlie | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum corcovadense Raddi | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum cordatum (Desv.) Hieron. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum coriaceum Brownlie | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum corralense Esp. Bustos | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum costaricense (H. Christ) C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum costaricensis C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum crenulatum Salomon | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum crispum Hartm. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum cumingianum Trevis. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum cunninghamii T.Moore | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum cycadifolium Sturm | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum cycadoides Kuhn | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum dalgairnsiae Kuhn | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum danaeaceum (Kunze) H. Christ | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum decorum Brause | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum decurrens Roxb. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum deflexum Diels | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum delicatum Maxon & C.V. Morton | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum dendrophilum (Sodiro) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum dentatum Diels in Schum. & Laut. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum denticulatum Sw. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum deorso-lobatum Brause | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum deplanchei Lenorm. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum difforme Copel. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum dilatatum T.C.Chambers & P.A.Farrant | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum diplotaxicum Fée | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum discolor Keyserl. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum distans C. Presl | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum divergens (Kunze) Mett. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum divergens x stoloniferum  | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum diversifolium Mett. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum doodioides Hook. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum doodioides C.Brownlie | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum drepanophyllum Trevis. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum durum C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum eburneum H. Christ | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum egenolfioides (Baker) C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum egregium Copel. in Perkins | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum ekmanii Brause ex Urb. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum elongatum Gaudich. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum elongatum C.Presl | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum elongatum Mett. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum ensiforme (Liebm.) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum euraddianum Brade | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum exaltatum (Fée) Duek | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum exiguum Dutra | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum extensum Fée | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum faberi C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum falcatum Link | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum × falciculatum C. Presl | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum falciforme (Liebm.) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum fauriei (H. Christ) Tokubuchi | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum feei C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum fendleri Hook. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum fernandezianum (Looser) Prada & Rolleri | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum filiforme Ettingsh. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum finlaysonianum Wall. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum flabellatum PRESL | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum flaccisquama A. Rojas | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum flocculosum Ros.; C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum floresii (Sodiro) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum floresii var. spruceana Rosenst. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum fluminense Vell. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum fluviatile E.J. Lowe ex Salomon | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum fontanesianum Gaudich. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum fragile (Liebm.) C.V. Morton & Lellinger | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum francii Rosenst. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum fraseri (A. Cunn.) Luerss. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum fraxineum Willd. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum fraxinifolium Desv. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum fullagari C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum fuscosquamosum A. Rojas | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum galeotti T. Moore | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum gayanum (J. Rémy) Sturm | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum gemmascens Alston | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum geniculatum T.C.Chambers & P.A.Farrant | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum germanii (Hook.) H. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum ghiesbreghtii (Baker) C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum gibbum Mett. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum giganteum (Kaulf.) Schltdl. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum gilliesii (Hook. & Grev.) Mett. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum glabrum Roxb. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum glandulosum Kaulf. ex Link | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum glandulosum var. distans (C. Presl) C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum glandulosum var. meridionale Sehnem | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum glaziovii Christ | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum gracile Kaulf. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum gracilipes (Rosenst.) M. Kessler & A.R. Sm. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum gregsonii Tindale | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum guascense Hieron. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum guayanense A. Rojas | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum gueinzii T.Moore | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum haenkeanum Trevis. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum hamiltonii C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum hancockii Hance | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum hastatum Kaulf. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum helveolum Fée | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum heringeri Brade | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum heterocarpum Fée | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum heterophyllum Schltdl. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum heterophyllum Opiz | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum hieronymi Brause | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum hillii C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum hirsutum Rosenst. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum houttuynii Poir. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum howeanum T.C.Chambers & P.A.Farrant | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum humbertii Tardieu | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum humblotii C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum humile Salisb. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum imbricatum Blume | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum imperiale H. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum impressum Fée | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum indicum Burm. f. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum inflexum Kuhn | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum insigne C.M.Kuo | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum insularum  | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum integerrimum Spreng. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum integripinnulum Hayata | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum intermedium Link | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum irregulare Carr.in Seem. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum itatiaiense Brade | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum ivohibense C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum ivohibense var. hirsutum C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum jamaicense (Broadh.) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum japanense T.Moore | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum japonicum L. f. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum javanicum Blume | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum juergensii Rosenst. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum kaulfussianum Gaudich. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum keysseri Rosenst. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum kunthianum C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum laevigatum Cav. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum lanceola Sw. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum lanceolatum Raddi | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum lanceolatum var. achalense Hieron. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum lanceolatum var. squamipes Hieron. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum lanuginosum J.W.Sturm | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum latifolium C.Presl | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum latifolium Moritz | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum lechleri Mett. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum lehmannii Hieron. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum lellingerianum L.D. Gómez | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum lenormandii Diels | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum leyboldtianum (Phil.) C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum lherminieri (Bory) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum lherminieri subsp. lehmannii (Hieron.) Lellinger | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum lima Rosenst. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum lineatum (Sw.) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum linguifolium Stokes | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum lomariaceum Sodiro | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum lomarioides Sodiro | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum lomarioides Gaudich. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum longepetiolatum Tardieu | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum longicauda C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum longifolium Willd. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum longifolium Kunth | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum longifolium var. fraxineum (Willd.) Hieron. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum loxense (Kunth) Hieron. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum loxense (Kunth) Hook. ex Salomon | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum ludificans Herter | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum lyratum Moritz | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum macahense Brade | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum madagascariense Tardieu | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum magellanicum Mett. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum magellanicum var. angustiseta (Bory ex d'Urv.) C.V. Morton | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum magellanicum f. kochii Kunkel | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum magellanicum var. setigerum C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum malaccense Fée | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum malacothrix Maxon & C.V. Morton | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum marginatum Kuhn | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum maxonii (Broadh.) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum melanocaulon (Brack.) T.C. Chambers & P.A. Farrant | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum melanopus Hook. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum membranaceum Mett.; Diels | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum membranaceum Mett. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum meridense Klotzsch | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum meridense (Klotzsch) Mett. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum meridense var. costaricense Rosenst. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum meridionale C. Presl | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum meridionale var. pubirhachis Rosenst. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum mexiae Copel. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum microbasis (Baker) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum microbasis var. biforme (Baker) Tardieu | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum microlomaria L.D. Gómez | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum microphyllum (Goldm.) C.V. Morton | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum milnei C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum minus Ettingsh. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum minutulum H. Christ | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum mochaenum G. Kunkel | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum mochaenum var. fernandezianum (Looser) de la Sota | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum mochaenum var. squamipes (Hieron.) de la Sota | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum mochaenum subsp. squamipes (Hieron.) Prada & Rolleri | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum moluccanum Desv. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum monomorphum R.C. Moran & B. Øllg. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum montanum T.C.Chambers & P.A.Farrant | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum montbrisonis C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum moorei C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum moranianum A. Rojas | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum moritzianum Hieron. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum mucronatum Fée | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum neocaledonicum Salomon | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum nesioticum K.U.Kramer | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum nesophilum T.C.Chambers & P.A.Farrant | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum nigrocostatum A. Rojas | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum nigropaleaceum Alston | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum nigrosquamatum Gilbert | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum nigrum (Coleman) Mett. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum nigrum A. Rojas | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum nipponicum Makino | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum nitidum C. Presl | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum norfolkianum C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum norfolkianum Maiden | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum novae-zelandiae T.C.Chambers & P.A.Farrant | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum nudius Copel. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum nudum (Labill.) Luerss. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum nukuhivense E.Brown | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum obtusatum Mett. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum obtusifolium Ettingsh. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum obtusum R.C. Moran & A.R. Sm. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum occidentale L. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum occidentale var. distans (C. Presl) Baker | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum occidentale var. intermedium (Link) E. Fourn. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum occidentale var. minor Hook. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum occidentale var. occidentale  | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum occidentale var. puberulum Sodiro | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum occidentale f. pubirachis (Rosenst.) Lellinger | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum occidentale var. pubirhachis Rosenst. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum occidentale x meridense Klotzsch | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum occidentale x polypodioides Raddi | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum oceanicum Brownlie | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum onocleoides Sw. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum opacum Mett. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum organense Brade | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum orientale L. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum ornifolium (C. Presl) Ettingsh. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum pallidum Brack. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum palmiforme C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum × pampasicum de la Sota & M.L.Durán | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum papuanum Brause | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum parvifolium C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum parvulum Phil. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum patersonii (R. Br.) Mett. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum pazense M. Kessler & A.R. Sm. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum pectinatum Hook. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum pendulum Brause | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum penna-marina (Poir.) Kuhn | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum penna-marina var. bolivianum Rosenst. ex Looser | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum penna-marina f. polypodioides C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum penna-marina var. uliginosa Kuhn | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum peruvianum Hieron. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum petiolare (Sodiro) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum petiolaris Gilli | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum petiolatum Hunter | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum phanerophlebium C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum pilosum Brownlie | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum pinnatifidum A. Rojas | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum plagiogyriifrons Hayata | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum plantagineum (C. Presl) Hook. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum plumieri (Desv.) Mett. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum poeppigianum Sturm | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum pohlianum PRESL | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum polypodioides Raddi | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum polypodioides (Sw.) Kuhn | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum polystichoides Brack. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum procerum Sw. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum productum Moritz | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum proliferum Rosenst. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum pseudovulcanicum C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum pteropus (Kunze) Mett. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum puberulum (Sodiro) A. Rojas | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum pubescens Hook. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum punctulatum Sw. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum puniceum T.C.Chambers, P.J.Edwards & R.J.Johns | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum pygmaeum C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum pyrophilum C.V.Morton | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum pyrophyllum Blume | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum raddianum Rosenst. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum radiatum C.Presl | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum radicans L. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum raiateense J.W.Moore | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum reedei Espinosa | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum reedii Espinosa | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum reflexum Rosenst. ex M. Kessler & A.R. Sm. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum regnellianum C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum remotum C. Presl | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum repens M. Kessler & A.R. Sm. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum reptans Luerss. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum revolutum C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum rheophyticum R.C. Moran | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum rigidum Sw. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum rimbachii (Sodiro) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum × rodriguezii S.Aguiar, L.G.Quintan. & Amigo | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum rosenstockii de la Sota | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum rubicundum Hieron. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum rufum C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum rugosum T. Moore | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum ryanii Hieron. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum salicifolium Kaulf. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum salicifolium Ettingsh. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum sampaioanum Brade | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum saxatile Brause | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum scaberulum Sodiro | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum scabrum Liebm. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum scandens Bory | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum schiedeanum (Schltdl. ex C. Presl) Hieron. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum schlimense Fée | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum schomburgkii (Klotzsch) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum schottianum Mett. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum schottii C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum seminudum Willd. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum septentrionale Wallr. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum serpentinum Noronha | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum serrulatum Rich. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum sessilifolium (Klotzsch ex H. Christ) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum shaferi C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum simile Sehnem in Reitz | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum simillimum (Baker) Diels | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum simillimum f. binerve (Hook.) Tardieu | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum simillimum var. xiphophyllum (Baker) Tardieu | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum smilodon M. Kessler & Lehnert | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum sociale Christ | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum socialis Sodiro | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum sodiroi C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum souleytianum Gaudich. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum spannagelii Rosenst. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum spicant (L.) With. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum spicant Roth | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum spicant (L.) Sm. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum spicant var. elongata B. Boivin | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum spinulosum Poir. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum sprucei C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum squamatum M. Kessler & A.R. Sm. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum squamipes (Hieron.) M. Kessler & A.R. Sm. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum squamosissimum A. Rojas | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum squamosum Stokes | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum squamulosum (Desv.) Mett. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum squarrosum Gaudich. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum stagninum Raddi | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum stans Poir. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum stenophyllum (Klotzsch) Mett. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum stenopterum Hance | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum stierii Rosenst. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum stipitatum A. Rojas | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum stipitellatum (Sodiro) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum stoloniferum (Mett. ex E. Fourn.) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum stramineum Labill. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum striatum (Sw.) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum stuebelii Hieron. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum subcordatum  | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum subdimorphum Copel. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum subtile Rosenst. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum suburbicum Vell. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum sylvaticum  | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum tabulare (Thunb.) Kuhn | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum tabulare var. setigerum Capurro | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum tengwallii Kjellberg | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum tenuifolium Rosenst. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum treubii Alderw. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum triangulare Link | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum triangularifolium T.C.Chambers & P.A.Farrant | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum triangulatum J.Sm. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum tricuspe Klf.; Sieb. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum trifoliatum Kaulf. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum trilobum C. Presl | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum tuerckheimii Brause | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum uliginosum C.Chr. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum umbrosum Peter | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum underwoodianum (Broadh.) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum unguiculatum Kuhn | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum unilaterale Sw. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum unilaterale Willd. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum urbani Brause | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum usterianum (H. Christ) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum valdiviense C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum validum Fée | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum vallegrandense M. Kessler & A.R. Sm. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum varians (E. Fourn.) C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum venosum Copel. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum vestitum (Blume) Kuhn | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum vieillardii Mett. | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum violaceum (Fée) C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum virginicum L. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum vittatum Brack. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum viviparum (Broadh.) C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum volubile Kaulf. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum volubile var. lomarioidea Baker | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum vulcanicum Kuhn | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum wardiae Mickel & Beitel | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum wattsii Tindale | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum werckleanum (H. Christ) C. Chr. | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum werffii R.C. Moran | 
		Accepted | 
		  | 
		TRO | 
	
	
		| Blechnum whelanii F.M. Bailey | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum wolamense Cuf. | 
		Unresolved | 
		  | 
		IPNI | 
	
	
		| Blechnum wurunuran Parris | 
		Unresolved | 
		  | 
		TRO | 
	
	
		| Blechnum xiphophyllum C. Chr. | 
		Synonym | 
		  | 
		TRO | 
	
	
		| Blechnum yungense Ramos Giacosa, J. P. | 
		Unresolved | 
		  | 
		TRO |