Crockett, Sara L Genetic profiling of Hypericum (St. John's Wort) species by nuclear ribosomal ITS sequence analysis. [electronic resource] - Planta medica Oct 2004 - 929-35 p. digital Publication Type: Journal Article ISSN: 0032-0943 Standard No.: 10.1055/s-2004-832619 doi Subjects--Topical Terms: DNA, Plant--geneticsHumansHypericum--classificationPhylogenyPhytotherapyPolymerase Chain ReactionSequence Analysis