1. We report the isolation of β-L-aspartylglycine from the red alga Ceramium rubrum (Huds.) C. Ag. (Ceramiaceae). The peptide was isolated by ion-exchange chromatography followed by recrystallization in a yield of 0.022% of the fresh weight of the alga. Acid hydrolysis revealed it was a dipeptide of aspartic acid and glycine. PMR spectroscopy, DNP-derivative analysis, and comparison with synthetic β-L-aspartylglycine confirmed its structure. 2. The essential oil from flowers and leaves of Adenocalymma alliaceae (Bignoniaceae) consists almost entirely of diallyl di-, tri-and tetra-sulphide, a mixture formerly encountered within the Allium genus but never before convincingly recognized within the class of dicotyledonous angiosperms.