Black list
Definitions
- Neophytes: Alien plant species that have been introduced after the year of 1500 and are established in nature.
- Invasive species: Species that spread rapidly and reach high abundances, so that they crowd out native species.
- Black List: List of invasive alien plants of Switzerland that actually cause damage in the areas of biodiversity, health, and/or economy. The establishment and the spread of these species must be prevented.
- Watch List: List of invasive alien plants of Switzerland which have the potential to cause damage. Their spread needs to be monitored and if necessary prevented. They already cause damage in neighbouring countries.
These lists are brought up to date periodically on the basis of information obtained and the distribution cards of the CRSF.
-> To enable a decision as to whether an alien plant species (neophyte) should be added to the Black List or to the Watch List, a classification key was elaborated (in German, French, Italian).
Black List | CPS/SKEW, April 2007 |
Ailanthus altissima | Tree-of-Heaven |
Ambrosia artemisiifolia | Common Ragweed |
Artemisia verlotiorum | Verlot's Mugwort |
Buddleja davidii | Butterfly-Bush |
Elodea canadensis | Canadian Pondweed |
Elodea nuttallii | Nuttall's Pondweed |
Heracleum mantegazzianum | Giant Hogweed |
Impatiens glandulifera | Himalayan Balsam, Policeman's-Helmet |
Lonicera japonica | Japanese Honeysuckle |
Polygonum polystachyum | Himalayan Knotweed |
Prunus laurocerasus | Cherry-Laurel |
Prunus serotina | Capulin |
Reynoutria japonica | Japanese Knotweed |
Reynoutria sachalinensis + R. X bohemica | Sakhalin Knotweed + Hybrid Knotweed |
Rhus typhina | Velvet Sumac |
Robinia pseudoacacia | Black Locust |
Rubus armeniacus | Armenian Blackberry |
Senecio inaequidens | South African Ragwort |
Solidago canadensis s.l. | Canadian Goldenrod |
Solidago gigantea = S. serotina | Late Goldenrod |
Species of the Black List with local and regional importance: | |
Ludwigia grandiflora | Largeflower Water Primrose |
Lysichiton americanus | Yellow Skunk Cabbage |
Pueraria lobata | Kudzu |
| |
Watch List | CPS/SKEW, March 2008 |
Bunias orientalis | Hill Mustard |
Cornus sericea | Red Osier Dogwood |
Cyperus esculentus | Yellow Nut Sedge |
Erigeron annuus s.l. | Annual Fleabane, Daisy Fleabane |
Helianthus tuberosus s.l. | Topinambur |
Impatiens balfourii | Balfour's Touch-me-not |
Lonicera henryi | Henry's Honeysuckle |
Lupinus polyphyllus | Garden Lupin, Largeleaf Lupin |
Mahonia aquifolium s.l. | Holly Mahonia, Blue Barberry |
Parthenocissus inserta | False Virginia-Creeper, Grape Woodbine, Thicket-Creeper |
Paulownia tomentosa | Foxglove Tree, Princess Tree, Empress Tree |
Phytolacca americana | Pigeonberry, Poke, Pokeberry, Pokeroot, Pokeweed |
Phytolacca esculenta | Indian Poke, Indian Pokeweed, Shang Lu |
Sedum spurium | Caucasian Stonecrop |
Viburnum rhytidophyllum | Leatherleaf Viburnum |
Species of the Watch List with local and regional importance: | |
Amorpha fruticosa | Bastard Indigobush |
Asclepias syriaca | Common Milkweed |
Bassia scoparia | Burning Bush, Kochia, Summer Cypress |
Glyceria striata | Fowl Mannagrass |
Senecio rupestris | Oxford Ragwort |
Trachycarpus fortunei | Hemp Palm, Chinese Windmill Palm |