Alkaloids contained in the leaves and petiole of Nelumbo nucifera var. prolifera MIYOSHI (Japanese name “Myôren”) were examined. The main alkaloid was proved to be nornuciferine (III), a tertiary phenolic base, same as ordinary Japanese lotus (Nelumbo nucifera GAERTN.). A tertiary, non-phenolic bases, nuciferine (I) and roemerine (II), were isolated and identified from the leaves.