In between Diplarrena moraea and Talinum which one is  known as white iris?
Talinum Talinum is a genus of herbaceous succulent plants in the family Talinaceae (formerly in the family Portulacaceae) whose common names include fameflower and flameflower. Several species bear edible leaves, and "Talinum fruticosum" is widely grown in tropical regions as a leaf vegetable. "Talinum paniculatum" is grown as an ornamental plant.
Iris kerneriana Iris kerneriana is a species in the genus "Iris", it is also in the subgenus of Limniris and in series Spuriae. It is a small bulbous perennial plant, with fragrant, yellow flowers from Turkey. It is cultivated as an ornamental plant in temperate regions and known as "Kerner Iris" or "Kerner's Iris".