Portulaca grandiflora Hook, also called as sunflower, is an annual succulent herb belonging to purslane family portulaca. As a typical of Betalains synthesis plant, Portulaca grandiflora Hook is widely cultivated in China. 半枝莲(PortulacagrandifloraHook)又名太阳花,是马齿苋科马齿苋属一年生肉质草本植物,在我国各地广泛栽培,是典型的合成甜菜素类植物。