Een nieuwe negentiende-eeuwse vindplaats van Callitriche cophocarpa Sendtn. in Nederland

Three sheets in the collection of the KNBV in the Rijksherbarium, Leiden, thus far doubtfully named, have been identified as . C. cophocarpa. This identification is based on anatomical characters of the fruit. The plants are collected near Kampen in the 19th century. It is the third locality of the species in the Netherlands.