<jats:p> Hydroxy-des-N-methyl-α-obscurine, C<jats:sub>16</jats:sub>H<jats:sub>24</jats:sub>O<jats:sub>2</jats:sub>N<jats:sub>2</jats:sub>, has been isolated from L. flabelliforme and a structure assigned to it on the basis of physical evidence. A structure is assigned to Lycopodium alkaloid L.5, which we have named flabellidine, on the basis of physical evidence and its chemical derivation from lycodine. The mass spectra of hydroxy-des-N-methyl-α-obscurine, flabellidine, and flabelline are discussed.