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Recent fieldwork in Tunisia yielded several new records of non-native species of the genus Agave. Agave angustifolia var. marginata, A. fourcroydes and A. sisalana are locally naturalised and reported for the first time from the country. To our knowledge, naturalised populations of these three taxa were also unknown elsewhere in the Maghreb and North Africa. We also draw attention to A. attenuata subsp. attenuata, a widely grown ornamental that is expected to become naturalised in the near future. Updated nomenclature, brief descriptions, as well as general and national distributions are provided for each of the naturalised Agaves. A key to all the species, subspecies, and varieties of Agave that occur in Tunisia is presented, and all the taxa are illustrated.

Botanical surveys undertaken in Central and Northern Tunisia (North Africa), mostly between 2012 and 2018, have revealed first records and/or new distributional records for non-native succulents (sensu lato) belonging to the Cactaceae family. Some can be considered naturalised or even potentially invasive [e.g. Opuntia dillenii (Ker Gawl.) Haw.], whereas others are here reported for the first time for North Africa, either as recently naturalised or casual, e.g.: Echinopsis eyriesii (Turpin) Zuccarini, Opuntia dejecta Salm-Dyck, O. lindheimeri Engelm., O. monacantha Haw and O. robusta J.C. Wendl. ex Pfeiff. Short descriptions are given for each of these species, comments on their actual status were pointed out and field photographs are provided.