There is a difference, the difference is as follows:

One, the main body is different

1, Marjoram: is a perennial herbaceous hosta of the genus Iris in the family of Iridaceae, a variant of white-flowered Marjoram, a perennial densely clumped herb.

2, iris: monocotyledonous, lily order, iris family perennial herbs, with tubers or creeping rhizomes.

Second, the rhizome is different

1, marjoram: rhizome leaves are stout, fibrous roots are dense and developed, the length of up to 1 meter or more, umbrella-shaped distribution.

2, Iris: rhizome long or tuberous, horizontal or oblique stretch, slender or fat. Leaves are mostly basal, overlapping each other, arranged in 2 rows, sword-shaped, striped or filiform, with parallel veins, obvious or absent midvein, base sheathing, tip acuminate.

Three, the distribution of different

1, Marantzia: born in the wasteland, roadsides, hillside meadows, especially overgrazed salinized pastures on the growth of more. Distributed in Korea, Russia, India and China.

2, iris: cloth in the north temperate zone , a few into the medicine, iris rhizome for the vomit-inducing agent or slow down the agent, with anti-inflammatory effect.

Baidu Encyclopedia - Iris

Baidu Encyclopedia - Marjoram