Many of Stearn's collaborative works used his bibliographic skills. While his genus monographs largely concentrated on Mediterranean flora, notably "Epimedium", "Allium" and "Paeonia", he was also the author of species articles both popular and technical as well as a number of classical treatises. In addition he produced floristic treatments of a number of regions such as Jamaica and Nepal. He also contributed to many national Florae as diverse as Bhutan and Greece, as well as major regional florae including the "Flora Europaea" and "European Garden Flora".