This paper synthesizes the scientific knowledge on a cactus (Campylopus introflexus), an invasive alien species, to attract the attention of foresters. The paper describes the cactus, attempts to reconstruct the history of its introduction in France, and estimates the colonization and distribution...

An alien, annual meadow grass species, Poa annua, which has currently colonized the moraines of the retreating Ecology Glacier at King George Island, Antarctica, is recorded for the first time. Species usually associated with this habitat are the two native vascular plants, and mosses such as Bryum ...