Nephrodium spinulosum f. intermedium (Muhl. ex Willd.) Gilbert form synonym

Filix-mas spinulosa var. intermedia (Muhl. ex Willd.) Farw. variety synonym

Dryopteris intermedia subsp. intermedia subspecies accepted

Dryopteris maderensis Milde ex Alston species synonym

Aspidium intermedium Muhl. ex Willd. species heterotypic synonym

Dryopteris intermedia f. sparsifrondosa C.F.Reed form synonym

Dryopteris intermedia subsp. maderensis (Milde ex Alston) Fraser-Jenk. subspecies accepted

Dryopteris intermedia f. furcata C.F.Reed form synonym

Dryopteris intermedia subsp. azorica (Christ) Jermy subspecies accepted

Dryopteris azorica (Christ) Alston species synonym

Filix spinulosa var. intermedia (Muhl. ex Willd.) Farw. variety proparte synonym

Thelypteris spinulosa var. intermedia (Muhl. ex Willd.) Nieuwl. variety synonym

Thelypteris intermedia (Muhl. ex Willd.) House species synonym

Aspidium dilatatum var. azoricum Christ variety synonym

Nephrodium intermedium (Muhl. ex Willd.) C.Presl species heterotypic synonym

Lastrea intermedia (Muhl. ex Willd.) C.Presl species heterotypic synonym

Dryopteris austriaca var. intermedia (Muhl. ex Willd.) C.V.Morton variety synonym

Dryopteris spinulosa var. intermedia (Muhl. ex Willd.) Underw. variety synonym

Polypodium intermedium Muhl. species proparte synonym

Nephrodium spinulosum var. intermedium (Muhl. ex Willd.) Davenp. variety synonym

Aspidium grayanum Regel species synonym

Aspidium americanum Davenp. species heterotypic synonym

Nephrodium spinulosum var. intermedium (Willd.) Davenp. ex Gilbert variety synonym

Aspidium spinulosum f. maderensis Milde form synonym

Dryopteris maderensis Milde species homotypic synonym

Aspidium intermedium Muhl. species homotypic synonym