![Parrot’s feather Myriophyllium aquaticum sketchbook study](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Parrot’s feather Myriophyllium aquaticum sketchbook study
Sketchbook study of this invasive aquatic plant, with botanical details, completed for FOR Sweden
![Fanwort Cabomba caroliniana sketchbook study](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Fanwort Cabomba caroliniana sketchbook study
Sketchbook study of this invasive aquatic plant, with botanical details, completed for FOR Sweden
![Canadian Waterweed Elodea canadensis Nuttalls waterweed Elodea nuttalli comparison](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Canadian Waterweed Elodea canadensis Nuttalls waterweed Elodea nuttalli comparison
Sketchbook study of these similar invasive aquatic plant species, with botanical details, completed for FOR Sweden
![Nuttall’s waterweed Elodea nuttallii sketchbook study](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Nuttall’s waterweed Elodea nuttallii sketchbook study
Sketchbook study of this invasive aquatic plant, with botanical details, completed for FOR Sweden
![Canadian waterweed Elodea canadensis sketchbook study](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Canadian waterweed Elodea canadensis sketchbook study
Sketchbook study of this invasive aquatic plant, with botanical details, completed for FOR Sweden
![Eared watermoss Salvinia auriculata sketchbook study](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Eared watermoss Salvinia auriculata sketchbook study
Sketchbook study of this invasive aquatic plant, with botanical details, completed for FOR Sweden
![Floating pennywort Hydrocotyle ranunculoides vs Marsh Pennywort](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Floating pennywort Hydrocotyle ranunculoides vs Marsh Pennywort
Sketchbook study of the invasive vs the native aquatic plant, with botanical details, completed for FOR Sweden
![Fringed Water lily Nymphoides peltata](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Fringed Water lily Nymphoides peltata
Sketchbook study of this invasive aquatic plant, with botanical details, completed for FOR Sweden
![Water Lettuce Pistia stratiotes sketchbook study](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Water Lettuce Pistia stratiotes sketchbook study
Sketchbook study of this invasive aquatic plant, with botanical details, completed for FOR Sweden
![New Zealand pigmyweed Crassula helmsii](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
New Zealand pigmyweed Crassula helmsii
Sketchbook illustration showing plant, habit and details. Also known as Swamp stonecrop, this plant is an invasive aquatic species in many areas.
![Yellow waterlily Nuphar luteum](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Yellow waterlily Nuphar luteum
Yellow waterlily Nuphar luteum floating on water with developing “brandy bottle” seed flask
![White waterlily Nymphaea alba](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
White waterlily Nymphaea alba
White waterlily Nymphaea alba shown floating on water with lily pads
![White & Yellow waterlily Nymphaea alba & Nuphar luteum comparison](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
White & Yellow waterlily Nymphaea alba & Nuphar luteum comparison
White & Yellow waterlily Nymphaea alba & Nuphar luteum comparison, shown in water.
![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
![Yellow water-lily Nuphar lutea](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Yellow water-lily Nuphar lutea
Yellow water-lily Nuphar lutea pencil drawing of flowers, brandy bottle seed head, and leaves floating on the water surface
![White waterlily Nymphaea alba](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
White waterlily Nymphaea alba
White waterlily Nymphaea alba flower against a darker floating lily leaf, pencil
![Water dock Rumex hydrolapathum](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Water dock Rumex hydrolapathum
Water dock Rumex hydrolapathum pencil drawing
![Reedmace Typha latifolia rhizome](https://lizzieharper.co.uk/wp-content/themes/lizzie/images/px.jpg)
Reedmace Typha latifolia rhizome
Reedmace Typha latifolia rhizome detail with roots and vegetative shoot growing from a rhizome