Pseudodiphasium

Pseudodiphasium is a monophyletic genus of lycophyte in the family Lycopodiaceae with only one species, Pseudodiphasium volubile. Pseudodiphasium volubile is native from Peninsular Malaysia to Queensland, Australia, and has been introduced into Ecuador.^[1] In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the genus is placed in the subfamily Lycopodioideae.^[2] Some sources do not recognize the genus, sinking it into Lycopodium.^[3]

Pseudodiphasium
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Lycophytes
Class:	Lycopodiopsida
Order:	Lycopodiales
Family:	Lycopodiaceae
Subfamily:	Lycopodioideae
Genus:	Pseudodiphasium (G.Forst.) Holub[1]
Type species
Lycopodium volubile G.Forst.
Synonyms[1]
Lepidotis volubilis (G.Forst.) Rothm. Lycopodium durvillei A.Rich. Lycopodium volubile G.Forst. Lycopodium spectabile Blume

Taxonomy

Josef Ludwig Holub formally raised this group to the status of genus as Pseudodiphasium in 1983.^[4]

Extinction

In Australia Pseudodiphasium volubile is listed as "extinct" under the Environment Protection and Biodiversity Conservation Act 1999 as Lycopodium volubile and "extinct of the wild" under the Queensland Nature Conservation Act 1992 as Pseudodiphasium volubile. ^[5]