Common Name: Daylily Flower. Family: Hemerocallidaceae. Genus: Hemerocallis. Colors: Yellow, Red, Orange, Purple,Pink. Daylily flower is native from Europe to China. Their large showy flowers have made them popular worldwide, and there are over 60,000 registered named cultivars. Some species of the day lily are edible and are eaten in dishes in China including soup and stir-fry dishes. Some authorities claim that day lilies have medicinal properties. Meaning of Daylily flower: Emblem Of The Mother.