Illustration of the Voucher and Exemplar designations. When genetic samples are taken directly from the pressed, dried specimen, that specimen is the voucher of those genetic samples. When genetic samples are taken from individuals that are different than the pressed, dried specimen, but are thought to be the same species, then the pressed, dried specimen is the exemplar of those genetic samples.  
  Part of: Funk V, Gostel M, Devine A, Kelloff C, Wurdack K, Tuccinardi C, Radosavljevic A, Peters M, Coddington J (2017) Guidelines for collecting vouchers and tissues intended for genomic work (Smithsonian Institution): Botany Best Practices. Biodiversity Data Journal 5: e11625.