From Lycopodium phlegmaria L. collected in Sri Lanka, seven new alkaloids together with two known alkaloids, lycoflexine (2) and fawcettidine (5), have been isolated. Among seven new alkaloids, the structures of six alkaloids, N, N'-dimethylphlegmarine, 8-deoxyserratinidine, lycophlegmarine, epidihydrofawcettidine, lycophlegmine, and 8-deoxy-13-dehydroserratinine, were determined as shown by the formulas, 3, 4, 6, 8, 9, and 11, respectively.