Although both bamboos and iris belong to Iridaceae and iris, they are different in nature. They are not the same kind of plants. If you carefully observe them, you can distinguish them. It's also called iron shoulder pole, Douchi leaf root, butterfly flower, etc.
Iris is the former by artificial domestication, is different from the former, it is also called roof iris, blue butterfly, Black Kite, flat bamboo flower, toad seven.
The flowers of bamboos are arranged in a raceme. The color of the flowers is mostly lilac or white, and the color is relatively light. The petals will have yellow spots. The diameter of the flowers is about 5cm. The single petals are obovate or oval, and the length is about 2.5-3cm.
The flower color of iris is deep, purple, and the color on the petals is pure, there is no yellow spot on it, the diameter is about 10cm.
The root of Phyllostachys praecox will produce an oval capsule with a length of about 2.5-3cm and a diameter of about 1.2-1.5cm.
The fruit shape of iris is long oval or obovate, with a length of about 4.5-6cm and a diameter of about 2-2.5cm.