1. European garden plant having finely cut leaves and white or pale blue flowers; SYN. Nigella damascena.
2. Tropical American passion flower with finely dissected bracts; stems malodorous when crushed; SYN. running pop, wild water lemon, Passiflora foetida.
Perennial plant of S Europe Nigella damascena of the buttercup family Ranunculaceae, with fernlike leaves and delicate blue or white flowers.