1.
The Paraphyly of Osmunda is Confirmed by Phylogenetic Analyses of Seven Plastid Loci
by Metzgar, Jordan S
Systematic botany, 2008, Vol.33 (1), p.31-36

2.
The Paraphyly of Osmunda is Confirmed by Phylogenetic Analyses of Seven Plastid Loci
by Metzgar, Jordan S
Systematic botany, 2008, Vol.33 (1), p.31-36
