| Lycopodiaceae | |
Diphasium alpinum
| (L.) Rothm. | Feddes Repert. Spec. Nov. Regni Veg. 54: 65 | 1944 |
| Lycopodiaceae | |
Diphasium anceps
| Á. Löve & D. Löve | Nucleus 1(1): 7 | 1958 |
| Lycopodiaceae | |
Diphasium carolinum
| Lawalrée | Bull. Soc. Naturalistes Luxembourg. 76/1971/1: 3 | 1972 |
| Lycopodiaceae | |
Diphasium chamaecyparissus
| (A. Braun ex Mutel) Á. Löve & D. Löve | Bot. Not. 114: 34 | 1961 |
| Lycopodiaceae | |
Diphasium complanatum
| (L.) Rothm. | Feddes Repert. Spec. Nov. Regni Veg. 54: 64 | 1944 |
| Lycopodiaceae | |
Diphasium decurrens
| (R. Br.) Holub | Folia Geobot. Phytotax. 20(1): 78 | 1985 |
| Lycopodiaceae | |
Diphasium flabelliforme
| Rothm. | Feddes Repert. Spec. Nov. Regni Veg. 66: 235 | 1962 |
| Lycopodiaceae | |
Diphasium gayanum
| (J. Rémy ex Gay) Holub | Folia Geobot. Phytotax. 20(1): 78 | 1985 |
| Lycopodiaceae | |
Diphasium hastulatum
| Sipliv. | | |
| Lycopodiaceae | |
Diphasium issleri
| Holub | | |
| Lycopodiaceae | |
Diphasium jussiaei
| (Desv. ex Poir.) Rothm. | Feddes Repert. Spec. Nov. Regni Veg. 54: 65 | 1944 |
| Lycopodiaceae | |
Diphasium lawessonianum
| (B. Øllg.) B. Øllg. | Nordic J. Bot. 33(2): 195 | 2015 |
| Lycopodiaceae | |
Diphasium madeirense
| (J.H. Wilce) Rothm. | Feddes Repert. Spec. Nov. Regni Veg. 66: 235 | 1962 |
| Lycopodiaceae | |
Diphasium multispicatum
| (J.H. Wilce) Rothm. | Feddes Repert. Spec. Nov. Regni Veg. 66: 235 | 1962 |
| Lycopodiaceae | |
Diphasium platyrhizoma
| (J.H. Wilce) Rothm. | Feddes Repert. Spec. Nov. Regni Veg. 66: 235 | 1962 |
| Lycopodiaceae | |
Diphasium scariosum
| (G. Forst.) Rothm. | Feddes Repert. Spec. Nov. Regni Veg. 54: 65 | 1944 |
| Lycopodiaceae | |
Diphasium sitchense
| Á. Löve & D. Löve | Univ. Colorado Stud., Ser. Biol. 17: 3 | 1965 |
| Lycopodiaceae | |
Diphasium tristachyum
| (Pursh) Rothm. | Feddes Repert. Spec. Nov. Regni Veg. 54: 65 | 1944 |
| Lycopodiaceae | |
Diphasium wallrothii
| H.P. Fuchs | Acta Bot. Acad. Sci. Hung. 9: 13 | 1963 |
| Lycopodiaceae | |
Diphasium zanclophyllum
| (J.H. Wilce) Rothm. | Feddes Repert. Spec. Nov. Regni Veg. 66: 235 | 1962 |
| Lycopodiaceae | |
Diphasium zeileri
| (Rouy) Damboldt | Ber. Bayer. Bot. Ges. 36: 26 | 1963 |