Cordylanthus rigidus subsp. setiger T.I.Chuang & Heckard subspecies accepted

Cordylanthus rigidus var. compactus (Pennell) D.W.Taylor variety synonym

Cordylanthus rigidus var. ferrisianus (Pennell) D.W.Taylor variety synonym

Cordylanthus rigidus var. ferrisiaus (Pennell) D.W.Taylor variety synonym

Adenostegia rigida var. macrocephala Kuntze variety synonym

Adenostegia rigida var. brevibracteata Greene variety synonym

Adenostegia littoralis Ferris species synonym

Adenostegia filifolia (Nutt. ex Benth.) Abrams species synonym

Cordylanthus filifolius Nutt. ex Benth. species synonym

Cordylanthus rigidus subsp. rigidus subspecies accepted

Adenostegia rigida Benth. species synonym

Cordylanthus involutus Wiggins species synonym

Cordylanthus rigidus var. sylvaticus Jeps. variety synonym

Cordylanthus filifolius Nutt. species homotypic synonym

Cordylanthus littoralis (Ferris) J.F.Macbr. species synonym

Cordylanthus filifolius var. brevibracteatus A.Gray variety synonym

Cordylanthus rigidus subsp. setigerus T.I.Chuang & Heckard subspecies accepted

Cordylanthus rigidus subsp. littoralis (Ferris) T.I.Chuang & Heckard subspecies accepted

Cordylanthus rigidus subsp. brevibracteatus (A.Gray) Munz subspecies accepted

Cordylanthus platycephalus Pennell species synonym

Cordylanthus littoralis subsp. platycephalus (Pennell) Munz subspecies synonym

Cordylanthus ferrisianus Pennell species synonym

Cordylanthus compactus Pennell species synonym

Cordylanthus rigidus subsp. involutus (Wiggins) T.I.Chuang & Heckard subspecies accepted

Cordylanthus rigidus subsp. platycephalus (Pennell) Munz subspecies synonym

Cordylanthus rigidus var. brevibracteatus (A.Gray) J.F.Macbr. variety synonym

Cordylanthus rigidus var. filifolius J.F.Macbr. variety synonym

Cordylanthus rigidus var. littoralis (Ferris) J.F.Macbr. variety synonym

Cordylanthus rigidus var. littoralis (Ferris) Jeps. variety synonym