Huperzioideae

Huperzioideae is a subfamily of lycopsids in the family Lycopodiaceae. It has sometimes been recognized as a separate family, Huperziaceae. The Pteridophyte Phylogeny Group classification of 2016 recognizes three extant genera:Huperzia ; about 25 species; terrestrial.Phlegmariurus ; about 250 species; previously included in Huperzia; mainly epiphytes.Phylloglossum ; formerly thought to be only distantly related to Huperzia. This is a terrestrial, grass-like plant with basal, 2–5 cm long, fleshy leaves. The only accepted species is Phylloglossum drummondii.
The plants are distinct from those of other members of the Lycopodiaceae in having erect growth; and in their spore-bearing structures being produced in the axils of unmodified leaves, rather than in terminal club-like structures. The subfamily also has a basal chromosome count of n=67, versus counts of n=23, 34 in the Lycopodiaceae.