Revision of Alternanthera (Amaranthaceae–Gomphreneae) in the Arabian Peninsula, with nomenclatural corrections and notes on A. pungens and A. sessilis in the Old World
Background and aims – Alternanthera is one of the largest genera in Amaranthaceae, with the primary distribution in the Americas. The identification of some species, including those occurring as alien noxious weeds in the Old World, is challenging because of unstable taxonomy and nomenclature. In addition, their m...