One, the flowers are different

Iris: Iris flowers are blue-purple in color and 10cm in diameter.

Calamus: Calamus flowers are yellowish-green in color and 40-50cm in diameter.

Two, the flowering period is different

Iris: Iris flowers are in the period of April-June.

Iris: the flowering period of iris is in June-September.

Three, the growing environment is different

Iris: iris mainly grows on slopes, forest margins and waterside wetlands.

Iris: Iris mainly grows in swamps, streams or by paddy fields.

Four, the fruit is different

Iris: The fruit of iris is oval or obovate.

Iris: The fruit of iris is oblong.

Baidu Encyclopedia - Calamus

Baidu Encyclopedia - Iris