Sambucus (scientific name: Sambucus williamsii Hance) is a deciduous shrub, up to 4 meters high. Stems ribless, multi-branched, gray-brown, glabrous. Opposite leaves, singular pinnate compound leaves; leaflets ovate, elliptic or ovate-lanceolate, apex acuminate, base skewed and broadly wedge-shaped, with thick serrated edges, glabrous on both sides. The panicle is terminal, with thick serrated edges and glabrous on both sides. Panicles terminal, densely ovate to oblong-ovate; calyx campanulate, 5-lobed, lobed tongue-shaped; corolla radial, 45-lobed, lobes obovate, pale yellow; 5 stamens, inserted on corolla , Shorter than corolla; 1 pistil, lower ovary, style short berries bright red. Flowering period from April to May, fruiting period from July to September.
Born in 540-1600 meters above sea level on hillsides, thickets, trenches, roadsides, mansions and other places. Produced in Heilongjiang, Liaoning, Hebei, Shaanxi, Shandong, Anhui, Zhejiang, Henan, Hubei, Guangdong, and other provinces.