Phylogenetic Relationships and Species Delimitation in Pinus Section Trifoliae Inferrred from Plastid DNA Hernández-León, Sergio ; Gernandt, David S. ; Pérez de la Rosa, Jorge A. ; Jardón-Barbolla, Lev Abstract Publication: PLoS ONE Pub Date: July 2013 DOI: 10.1371/journal.pone.0070501 Bibcode: 2013PLoSO...870501H