亚麻（学名：Linum usitatissimum）亚麻，是亚麻科亚麻属一年生草本植物。是在全球各地广泛栽培的植物，可能原产于西亚。

亚麻为一年生草本植物，茎直立，可达1.2米高，上部细软，有蜡质；叶互生，披针状，20–40毫米长，3毫米宽，表面有白霜；花的花瓣5，直径为15–25毫米，蓝色或白色；果实为蒴果，种子扁卵圆形，喜凉爽湿润气候。

• 亚麻花

• 蒴果

• 种子

• 亚麻田

• 亚麻田

• 亚麻田

Flax (also known as common flax or linseed), with the binomial name Linum usitatissimum, is a member of the genus Linum in the family Linaceae. It is a food and fiber crop that is cultivated in cooler regions of the world. The textiles made from flax are known in the Western countries as linen, and traditionally used for bed sheets, underclothes and table linen. The oil is known as linseed oil. In addition to referring to the plant itself, the word "flax" may refer to the unspun fibers of the flax plant. The plant species is known only as a cultivated plant, and appears to have been domesticated just once from the wild species Linum bienne, called pale flax.