Taxonomic revision of the genus Johnstonella (Boraginaceae s. str.) in Argentina

Abstract

The available taxonomic literature on the Argentinian species of Johnstonella is far from reflecting the phylogenetic relationships of the lineage as they are known today. For this reason, an updated taxonomic treatment of the genus in Argentina is reported in this contribution. As a result, a complete synonymy is provided for the accepted species, as well as morphological descriptions, geographical distribution maps, an identification key, uses, illustrations, photographs, and estimates of their conservation status. Additionally, lectotypes are designated for the names Cryptantha capituliflora var. compacta, Cryptantha hossei, Cryptantha modesta, Eritrichium falcatum, and Myosotis albida, as well as a second-step lectotype for Eritrichium axillare.