![Branched Bur-reed Sparganium erectum](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Branched Bur-reed Sparganium erectum
Branched Bur-reed Sparganium erectum showing rhizomes, and plant with flowers and fruit. Illustration also shows details of an individual fruit, and of a female and male flower.
![Arrowhead Sagittaria sagitarria](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Arrowhead Sagittaria sagitarria
Arrowhead Sagittaria sagitarria showing underwater ribbon-like leaves and floating oval leaves. Emergent leaves are arrow-shaped. Illustration also shows flowers and fruit.
![Broad-leaved Pondweed Potamogeton natans](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Broad-leaved Pondweed Potamogeton natans
Broad-leaved Pondweed Potamogeton natans with detail of fruiting spike, one seed, and one flower.
![Frog’s-bit Hydrocharis morsus-ranae](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
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](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
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](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
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](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
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](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Water plantain Alisma plantago-aquatica
Water plantain Alisma plantago-aquatica with details of fruit individual seed and one flower