Two-color diets and Iris-shaped diets A completely unpretentious rhizomatous plant, practically not damaged by pests, blooms for a long time and abundantly. Can be grown as a houseplant or garden plant.
Perennial, evergreen, rhizomatous plant up to 1 m tall. The leaves are long, narrow, sword-shaped, dark green. The flowers are large, white, cream or yellowish with three dark maroon spots.

Here are some photos from the Internet

http://edenland.com.ua/semena/dietes-dvukhtsvetnyj.html

https://m.my.mail.ru/inbox/temko/photo/15419/16592.html

Thank you for sharing a new type of plant for me :)