The family Solanaceae, the genus Sour Syrup perennial herb, also known as red girl, lantern grass, red lantern. Native to China, Japan and Korea. Often grows in the village side, roadside and hillside wasteland. The plant is 30-60 centimeters tall. Underground with creeping rhizomes; flowers solitary in leaf axils, calyx campanulate, ca. 6 mm, white, 1.5-2 cm in diam. When the fruit is ripe, the persistent calyx is up to 5 cm long, orange-red with the spherical fruit. Flowering occurs in spring and summer, and the fruit matures in fall. Because of its rapid growth and strong invasive power, it can benefit for many years when planted as a flower bed. After the above ground part dries up in winter, the rhizome will sprout new plants in the next year, and weeds are not easy to grow. Used for forest edge ground cover, potted fruit or cut fruit branch bottle plug ornamental. The fruit is edible. The whole herb is used as medicine, has the effect of clearing away heat and removing toxins, especially for tonsil inflammation is very good; calyx is the medicine for asthma.

About 120 species of plants of the same genus, mainly native to tropical America, our distribution has five species, the southern region of the cultivated lantern fruit, the whole plant is densely pubescent, corolla yellowish, anthers blue-purple.