Update of the Black List and Watch List of invasive alien plants in Switzerland
In September 2014, the Swiss Black and Watch Lists of invasive alien plants have been revised and considerably increased. These lists, although not being part of regulations, represent useful tools for decision-making and prevention. As new species constantly arrive on the Swiss territory, these lists are revised once a year by a panel of experts. Each species is assessed with the current state of knowledge on the basis of criteria (considering vegetative and sexual reproduction, environmental impact and spread potential).
The species included in the revised Black and Watch Lists of invasive alien plants are listed below with an indication as to whether they have been newly added, along with an estimate of their current distribution in Switzerland. A datasheet is available for each species.
Black List of invasive alien plants
|
Species
|
Addition in 2014
|
Distribution in CH
|
|
Abutilon theophrasti (Malvaceae)
|
X
|
Limited
|
|
Ailanthus altissima (Simaroubaceae, EPPO List of Invasive Alien Plants)
|
|
Very widespread
|
|
Ambrosia artemisiifolia (Asteraceae, EPPO List of IAP)
|
|
Very widespread
|
|
Amorpha fruticosa (Fabaceae, EPPO List of IAP)
|
X
|
Limited
|
|
Artemisia verlotiorum (Asteraceae)
|
|
Very widespread
|
|
Asclepias syriaca (Apocynaceae)
|
X (was on the Watch List)
|
Limited
|
|
Buddleja davidii (Scrophulariaceae, EPPO List of IAP)
|
|
Very widespread
|
|
Bunias orientalis (Brassicaceae)
|
X
|
Widespread
|
|
Cabomba caroliniana (Cabombaceae, EPPO List of IAP)
|
X
|
Absent
|
|
Crassula helmsii (Crassulaceae, EPPO A2 List)
|
X (was on the Watch List)
|
Absent
|
|
Cyperus esculentus (Cyperaceae, EPPO List of IAP)
|
X (was on the Watch List)
|
Limited
|
|
Echinocystis lobata (Cucurbitaceae)
|
X
|
Absent
|
|
Elodea canadensis (Hydrocharitaceae)
|
|
Widespread
|
|
Elodea nuttallii (Hydrocharitaceae, EPPO List of IAP)
|
|
Widespread
|
|
Erigeron annuus (Asteraceae)
|
X (was on the Watch List)
|
Very widespread
|
|
Fallopia japonica (Polygonaceae, EPPO List of IAP)
|
|
Very widespread
|
|
Fallopia sachalinensis (Polygonaceae, EPPO List of IAP)
|
|
Limited
|
|
Fallopia x bohemica (Polygonaceae, EPPO List of IAP)
|
|
Widespread
|
|
Heracleum mantegazzianum (Apiaceae)
|
|
Very widespread
|
|
Hydrocotyle ranunculoides (Apiaceae, EPPO A2 List)
|
X
|
Absent
|
|
Impatiens glandulifera (Balsaminaceae, EPPO List of IAP)
|
|
Widespread
|
|
Lonicera henryi (Caprifoliaceae)
|
X (was on the Watch List)
|
Limited
|
|
Lonicera japonica (Caprifoliaceae)
|
|
Limited
|
|
Ludwigia grandiflora (Onagraceae, EPPO A2 List)
|
|
Absent
|
|
Ludwigia peploides (Onagraceae, EPPO A2 List)
|
X
|
Absent
|
|
Lupinus polyphyllus (Fabaceae)
|
X (was on the Watch List)
|
Limited
|
|
Myriophyllum aquaticum (Haloragaceae, EPPO List of IAP)
|
X
|
Absent
|
|
Persicaria wallichii (Polygonaceae) (=Polygonum polystachyum)
|
|
Limited
|
|
Prunus laurocerasus (Rosaceae)
|
|
Widespread
|
|
Prunus serotina (Rosaceae)
|
|
Widespread
|
|
Pueraria lobata (Fabaceae, EPPO A2 List)
|
|
Limited
|
|
Rhus typhina (Anacardiaceae)
|
|
Widespread
|
|
Robinia pseudoacacia (Fabaceae)
|
|
Very widespread
|
|
Rubus armeniacus (Rosaceae)
|
|
Limited
|
|
Senecio inaequidens (Asteraceae, EPPO List of IAP)
|
|
Widespread
|
|
Sicyos angulatus (Cucurbitaceae, EPPO List of IAP)
|
X
|
Absent
|
|
Solanum carolinense (Solanaceae)
|
X
|
Absent
|
|
Solidago canadensis (Asteraceae, EPPO List of IAP)
|
|
Very widespread
|
|
Solidago gigantea (Asteraceae, EPPO List of IAP)
|
|
Very widespread
|
|
Toxicodendron radicans (Anacardiaceae)
|
X
|
Absent
|
|
Trachycarpus fortunei (Arecaceae)
|
X (was on the Watch List)
|
Limited
|
Watch List of invasive alien plants
|
Species
|
Addition in 2014
|
Distribution in CH
|
|
Acacia dealbata (Fabaceae)
|
X
|
Limited
|
|
Cornus sericea (Cornaceae, EPPO List of IAP)
|
|
Limited
|
|
Galega officinalis (Fabaceae)
|
X
|
Limited
|
|
Helianthus tuberosus (Asteraceae, EPPO List of IAP)
|
|
Widespread
|
|
Impatiens balfouri (Balsaminaceae)
|
|
Widespread
|
|
Kochia scoparia (Amaranthaceae)
|
|
Limited
|
|
Lysichiton americanus (Araceae)
|
|
Absent
|
|
Opuntia humifusa (Cactaceae)
|
X
|
Limited
|
|
Parthenocissus inserta (Vitaceae)
|
|
Limited
|
|
Paulownia tomentosa (Paulowniaceae)
|
|
Limited
|
|
Phytolacca americana (Phytolaccaceae)
|
|
Limited
|
|
Sagittaria latifolia (Alismataceae)
|
X
|
Limited
|
|
Sedum spurium (Crassulaceae)
|
|
Limited
|
|
Sedum stoloniferum (Crassulaceae)
|
X
|
Limited
|
|
Solidago graminifolia (Asteraceae)
|
X
|
Limited
|
|
Symphoricarpos albus (Caprifoliaceae)
|
X
|
Limited
|
|
Symphyotrichum novi-belgii aggr. (Asteraceae)
|
X
|
Limited
|
Sources
Info Flora Website (2014) Listes et fiches d’information. http://www.infoflora.ch/fr/flore/neophytes/listes-et-fiches.html
Swiss Federal Council. Ordinance on the Handling of Organisms in the Environment (Release Ordinance, RO) of 10 September 2008 (Status as at 1st June 2012). 814.911. http://www.admin.ch/ch/e/rs/814_911/index.html