Frog’s-bit Hydrocharis morsus-ranae
Frog’s-bit Hydrocharis morsus-ranae showing plant with female flowers on the left, and one with male flowers on the right. Illustration shows rhizomes as well as floating orbicular leaves and flowers.
Water horsetail Equisetum fluviatile
Water horsetail showing two sterile stems and two fertile stems, one with leaves and one without. Also showing cross section of the stem, and the rhizome.
Parrots Feather Myriophyllum aquaticum
Parrots Feather Myriophyllum aquaticum showing rosettes of leaves below water. Also showing detail of the tiny flowers, and a vegetative and flowering spike.
Flowering rush Butomus umbellatus
Flowering rush Butomus umbellatus with details of individual flower, leaf cross section, stamen before and after dehiscence, and seedhead
Water plantain Alisma plantago-aquatica
Water plantain Alisma plantago-aquatica with details of fruit individual seed and one flower