National flower of Brunei: Simpor Cambodian national flower: RumdulNational flower of Indonesia: Moon Orchid National flower of Laos: ChampaNational flower of Malaysia: HibiscusNational flower of Myanmar: PadaukNational flower of the Philippines: Sampaguita Jasmine National flower of Singapore: Vanda Miss Joaquim National flower of Thailand: RatchaphruekNational flower of Vietnam: Lotus Source: chanthol.wordpress.com
Should the lotus be a Lao national flower too, because That Luang is in a shape of a lotus bud.