Ripe seed of Prunus amygdalus Stokes var amara Focke (P. communis Arcang. var amara (Focke) Schneid.), Rosaceae. Habit. Italy, Spain, and Southern France. Constit. 35-50% fixed oil, about 3% amygdalin, proteins, emulsin (synaptase), sugar. Ref: E. W. Eckey, Vegetable Fats and Oils (Reinhold, New York, 1954) p 455.