The white grape variety is a new variety between Chasselas x Muscat d'Eisenstadt (Ingram's Muscat). Synonyms are Basil grape, Lorenzi grape, Muscat Basilicum, Muscat Blanc Saint Laurent, Muscat Hatif, Muscat Saint Laurent, Saint Laurent, Saint Laurent de Saumur and Svatovavřinecké. The cross was made in 1854 in Angers (Maine-et-Loire, France) at the Institut Moreau-Robert by the breeder M. Robert. The same parents also gave rise to the Muskat Ottonel variety. Despite similar synonyms, there is no relation to the red variety St. Laurent. The variety was a crossing partner of the new varieties Bouquetriesling, Bouquetsylvaner, Diamantmuskat, Edelmuskat, Feinmuskat, Feinriesling, Firnriesling, Marienriesling, Muscat de la Republique, Muscat Dore de Semis, Muskatblume, Muskatbouquet and Muskatduft. It is suitable as a wine grape and table grape. No stocks were reported in 2016 (Kym Anderson statistics).