invasive

Giant Hogweed Heracleum mantegazzianum showing red spotted stems and variable leaf shape

Trumpet bush Cecropia peltata showing a section of a much larger tree

Trumpet bush Cecropia peltata pen and ink line drawing

Bluebell flower Hyancinthoides non-scripta, single blossom

Beavers Castor canadensis with beaver dam.  Illustration based in Tierra del Fuego, where introduced beavers have damaged the closed ecosystem. Illustration from The Hidden Universe: Adventures in Biodiversity by Alexandre Antonelli

Alaskan lupin Lupinus nootkanensis plant showing leaves and blue flowering spikes.

Nootka lupin Lupinus nootkanensis flowering spike in sketch style, watercolour & graphite

Nootka lupin Lupinus nootkanensis sketchbook studies showing details of leaflets, seed pods, seeds, root, habit sketch, and flower cross sections.

Nootka lupin sketch with notes showing details of leaflets, seed pods, seeds, root, habit sketch, and flower cross sections.

Habit sketch of Heath Star-moss Campylopus introflexus growing on limestone boulder.

Heath Star-moss Campylopus introflexus illustrations showing wet moss with white apical hairs.

Heath Star-moss study showing the moss in wet and dry states, and botanical details

Heath Star-moss study with notes showing the moss in dry and wet form and with botanical details

Cow Parsley sketchbook study sheet.  Detail of seed head, flowers, and leaves and roots are shown.

Cow Parsley sketchbook study sheet with written notes.  Detail of seed head, flowers, and leaves and roots are shown.

Habit sketch of Cow parsley Anthriscus sylvatica with hollow stem & leaf attachment detail

Cow parsley Anthriscus sylvaticus Habit sketch showing entire plant.

Stand of Japanese knotweed Reynoutria japonica Fallopia japonica showing thicket of stems and foliage

Parrots Feather Myriophyllum aquaticum showing rosettes of leaves below water.  Also showing detail of the tiny flowers, and a vegetative and flowering spike.

Sweet Pea flower Lathyrus grandiflorus without leaves

Small Balsam Impatiens parviflora sketchbook study showing cross section of flower and details of seeds and exploded seed case.

Himalayan balsam Impatiens glandulifera with details of flower, seed and seed pods, stem, roots, and growth habit.

Three cornered leek Allium triquetrum pen and ink illustration with detail of one flower

Japanese Knotweed Fallopia japonica plant including roots underground