Shandan flower is a Liliaceae herb. Its stem is 30-40 cm high, with leaves on it, slender and as long as pine leaves. Perianth is 3-4.5 cm long and 5-7 mm wide. They are rolled back without spots or a few spots. Anthers have red pollen. In late spring and early summer, flowers bloom and petals droop. They are bright red, usually without spots, sometimes with a few spots near the base. They are bright and fragrant, very beautiful. The capsule is nearly spherical, with a diameter of 1.7-2.2cm. The flowering period is from June to August, and the fruiting period is from August to September. Born on a sunny hillside; It is still cultivated. Distributed in Heilongjiang, Jilin, Liaoning, Hebei, Henan, Shandong, Shanxi, Inner Mongolia, Shaanxi, Ningxia, Gansu, Qinghai and other provinces.