Any of various fleshy plants of the genus Portulaca, especially P. Grandiflora of South America, cultivated for its showy, colorful flowers that open only in sunlight.

• 半枝莲任一种马齿苋属的肉质植物,尤指南美的大花马齿苋,因其绚丽多彩的花朵而种植,花朵只在阳光下开放。