海葱(Urginea maritima)是风信子科植物，用鳞茎繁殖。为药用植物。

多年生草本植物，含粘滑的汁液。地下有很大的鳞茎；广披针形的叶子丛生；从叶丛中抽出的花茎，夏秋时节开白色小花，顶生的总状花序。

• 植株

• 花苞

• 花

Drimia maritima (syn. Urginea maritima) is a species of flowering plant in the family Asparagaceae, subfamily Scilloideae (formerly the family Hyacinthaceae). This species is known by several common names, including squill, sea squill, sea onion, and maritime squill. It may also be called red squill, particularly a form which produces red-tinged flowers instead of white. It is native to southern Europe, western Asia, and northern Africa.