From recent litter, deposited by both the River Rhine and the North Sea, and from a Weichselian Pleniglacial deposit, many pondweed endocarps were isolated and identified. Seventeen species could be identified, among which were two subfossil species that were also regularly found in recently deposited litter. To improve future identification, all species are presented by SEM photographs and their characteristic features are described.

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Acta botanica neerlandica

CC BY 3.0 NL ("Naamsvermelding")

Koninklijke Nederlandse Botanische Vereniging

R.T.J. Cappers. (1993). The identification of Potamogetonaceae fruits found in The Netherlands. Acta botanica neerlandica, 42(4), 447–460.