''Diphasium'' is a genus of

lycophytes The lycophytes, when broadly circumscribed, are a group of vascular plants that include the clubmosses. They are sometimes placed in a division Lycopodiophyta or Lycophyta or in a subdivision Lycopodiophytina. They are one of the oldest lineage ...

in the family

Lycopodiaceae The Lycopodiaceae (class Lycopodiopsida, order Lycopodiales) are an old family of vascular plants, including all of the core clubmosses and firmosses, comprising 17 accepted genera and about 500 known species. This family originated about 380 mi ...

. In the

Pteridophyte Phylogeny Group The Pteridophyte Phylogeny Group (PPG) is an informal international group of systematic botanists who collaborate to establish on the classification of pteridophytes ( lycophytes and ferns) that reflects knowledge about plant relationships discove ...

classification of 2016 (PPG I), it is placed in the subfamily

Lycopodioideae ''Lycopodioideae'' is a subfamily in the family Lycopodiaceae in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). It is equivalent to a broad circumscription of the genus '' Lycopodium'' in other classifications. Like all lyco ...

. Some sources do not recognize the genus, sinking it into ''

Lycopodium ''Lycopodium'' (from Ancient Greek ''lykos'', wolf and ''podion'', diminutive of ''pous'', foot) is a genus of clubmosses, also known as ground pines or creeping cedars, in the family Lycopodiaceae. Two very different circumscriptions of the gen ...

'', others include it in ''

Diphasiastrum ''Diphasiastrum'' is a genus of clubmosses in the plant family Lycopodiaceae. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it is placed in the subfamily Lycopodioideae. It is closely related to the genus ''Lycopodium'', a ...

''. ''Diphasium'' species are mostly native to the temperate southern hemisphere, but extend northwards into Central America and the Caribbean.

Species

, the ''Checklist of Ferns and Lycophytes of the World'' recognized the following species: *'' Diphasium gayanum'' (J.Rémy) Holub *'' Diphasium jussiaei'' (Desv. ex Poir.) Rothm. *''

Diphasium lawessonianum ''Diphasium'' is a genus of Lycopodiopsida, lycophytes in the family Lycopodiaceae. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it is placed in the subfamily Lycopodioideae. Some sources do not recognize the genus, sinking ...

'' (B.Øllg.) B.Øllg. *''

Diphasium scariosum ''Diphasium scariosum'', Synonym (taxonomy), synonym ''Lycopodium scariosum'', commonly known as spreading clubmoss or creeping club moss, is a species in the club moss family Lycopodiaceae. The genus ''Diphasium'' is accepted in the Pteridophyte ...

'' (G.Forst.) Rothm.

References

Lycopodiaceae Lycophyte genera {{Lycophyte-stub