Invasive aquatic plants in Europe Introduction This key is an identification tool for invasive aquatic plants and the close allies (‘look-alikes’). Part of the species is traded as ornamental plants for ponds and aquaria. As such they may escape cultivation and start colonizing natural environments and become a pest. A total of 78 species is…
Pennisetum key Introduction This key is specifically developed for the identification of species belonging to the genus Pennisetum available on the European market. The reason for developing this key is the large number of Pennisetum species and varieties available and the difficulty of distinguishing them from each other. Since August 2017 one Pennisetum species, Pennisetum…
Seedlings of invasive plants IntroductionThis key helps to identify seedlings of invasive plants, so plants can be recognized in an early stage of development. The species included are those of invasive terrestrial plants and/or plants which are introduced as weeds in imported potplants. A total of 92 species is included. All features are illustrated with…
Key to the invasive terrestrial plants in Europe IntroductionThis key helps to identify the major invasive terrestrial plants in NW Europe. Invasive are those species that pose a threat to the biodiversity of the ecoregion. Species included are both those that already are known to be invasive in this region, as well as species known…
Key to the weeds in imported bonsai plants in Europe IntroductionThis key is an identification tool for weeds that are introduced in Europe as they are imported as weeds in bonsai or other potplants. As many potplants are produced in Asia and South America, many common weeds in those regions are included. The species treated…