The dried sclerotia of ergot, usually obtained from rye seed and used as a source of several medicinally important alkaloids and as the basic source of lysergic acid.

• 麦角菌核干燥的麦角菌菌核，通常是从大麦的种子中提取，用作几种颇具医疗价值的生物碱的原料，也是麦角酸的基本来源