Ashley R. Field, Weston Testo, Peter D. Bostock, Joseph A.M. Holtum, Michelle Waycott,Molecular phylogenetics and the morphology of the Lycopodiaceae subfamily Huperzioideae supports three genera: Huperzia, Phlegmariurus and Phylloglossum, Molecular Phylogenetics and Evolution,Volume 94, Part B,2016,Pages 635-657, ISSN 1055-7903