1.
Herbarium specimen image of Narthecium ossifragum Huds., part of the collection of Naturalis Biodiversity Center
2.
Herbarium specimen image of Scirpus fluitans L., part of the collection of Naturalis Biodiversity Center
Herbarium specimen image of Scirpus maritimus L., part of the collection of Naturalis Biodiversity Center
Herbarium specimen image of Potamogeton natans L., part of the collection of Naturalis Biodiversity Center