Alyssum calycinum L., Sp. Pl., ed. 2, 2: 908. 1763 Alyssum calycinum L., Sp. Pl., ed. 2, 2: 908. 1763is basionym for Psilonema calycinum (L.) C. A. Mey. in Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg 7: 132. 1840Taxon for this nameAlyssum calycinum L., Sp. Pl., ed. 2, 2: 908. 1763