Key to willow species and hybrids present in New Zealand

Key to willow species and hybrids present in New Zealand This key is illustrated with more than 2000 images of willow species and hybrids that are either wild or in cultivation in New Zealand, and the features that are used to identify them. Most illustrations are of willow clones grown in the national willow collection…

Invasive aquatic plants in Europe

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

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

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…

Seeds of invasive plants

Seeds of invasive plants IntroductionThis key is an identification tool for seeds of invasive plants. The choice of species was based on an extensive survey of seeds and seed mixtures in trade, where the seeds of these invasive species were found as contamination. A total of 143 species is included. All features are illustrated with…

Key to the invasive terrestrial plants in Europe

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 or other potplants in Europe

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…

Plants of South Eastern New South Wales

Plants of South Eastern New South Wales IntroductionThis key is designed for anyone who has an interest in finding out about the plants of south eastern New South Wales. It includes about 2,900 species of plants accompanied by about 10,000 images. It includes Eucalypts, but not ferns, orchids, grasses, or most sedges or rushes. There…

WATTLE Acacias of Australia

WATTLE Acacias of Australia ver. 3 This WATTLE ver. 3 key (which is also available as an App) enables users to identify wattle plants that occur anywhere in Australia or elsewhere in the world where they are grown. It includes 1,057 formally described species of Acacia, plus several hybrids and informal taxa of this genus.…

Relhania and Macowania groups

Key to the southern African species of the Relhania and Macowania groups in the Gnaphalieae (Asteraceae) Southern Africa is an important distribution centre for the family Asteraceae as well as for the tribe Gnaphalieae. For this tribe it houses 24% of the world’s species. More remarkable is that 75% of the Gnaphalieae genera in southern…