The sea onion is a poisonous plant, it is found throughout the Mediterranean. The bulb, 20 cm in diameter, can weigh up to 2.5 kg. The 50 to 1.50 m high flower stem bears up to 100 star-shaped, white flowers, the fruit consists of a trifoliate capsule with black shiny seeds. The whole plant, all parts of the plant are poisonous.
Phytotherapeutic use is the dried, medium, fleshy bulb scales of the sea onion - Scillae bulbus.