Birdseed aliens originating from Niger (Guizotia abyssinica) wild bird food

Abstract

Although batches of Niger (Guizotia abyssinica) seed imported for wild bird food from North Africa, and more recently India, achieve a very high degree of purity, impurities occur and include some taxa potentially capable of growing to maturity in Britain and Ireland. Many such plants are important arable weeds in regions where G. abyssinica is grown on a large scale for human consumption. This paper lists species that have been cultivated over the last ten years from commercially available Niger seed, and the years of their occurrence.