Non-occurrence of Lotusin in Lotus arabicus L.

In 1901 Dunstan and Henry reported the occurrence of lotusin, the maltose cyanohydrin ether of lotoflavin (quercetin), in air-dried samples of Lotus arabicus L. collected in Egypt. Nearly forty years later, Henry isolated lotaustralin (α -hydroxy-α -methyl-butyronitrile-β -D-glucose) from the same species.