All seeds are labelled with the collection-number, scientific name, verification code*, origin code** and origin data. The taxonomic names are based on the Missouri Botanical Garden's VAST (VAScular Tropicos) nomenclatural database. Specimens collected in the Netherlands are named according to Heukels’ Flora van Nederland, 2005. All angiosperms are listed according to the Angiosperm Phylogeny Group classification, based on molecular systematics. See also: http://www.mobot.org/MOBOT/research/APweb/. All pteridophytes are listed according to K.U. Kramer in K. Kubitzki, 1990.