Two new lycodine-typealkaloids, huperzinine N-oxide (1) and 8,15-dihydrohuperzinine (2) as well as five known compounds, huperzinine (3), huperzine B (4), huperzine D (5), N-demethylhuperzinine (6), and β-obscurine (7), were isolated from the club moss Lycopodium casuarinoides. The structures of 1 and 2 were elucidated by spectroscopic methods and chemical transformation. The absolute configuration