The extraction source is the fresh rhizome of ginger, a plant of the genus Zingiberaceae. Ginger has about 80 species worldwide, and about 14 species in China. Also known as fire ginger, big meat ginger. Ginger, plant height 0.5~1m. The rhizome is thick, multi branched, and has a fragrant and spicy taste. Leaf blade lanceolate or linear lanceolate, 15 to 30 cm long, 2 to 2.5 cm wide, glabrous, sessile; The ligule is membranous and 2-4 mm long. Total pedicel length 25 cm;
Spike inflorescences are cone shaped, 4-5 cm long; The bracts are ovoid, about 2.5 cm long, pale green or pale yellow in edge, with a small pointed tip at the top; Calyx tube length is about 1 cm; Corolla yellowish green, tube length 2 to 2.5 cm, lobes lanceolate, less than 2 cm long; The central lobe of the labial petal is oblong and obovate, shorter than the corolla lobe, with purple stripes and pale yellow spots. The lateral lobe is ovate, about 6 mm long; Stamens dark purple, anthers about 9 mm long; The connective appendage is drilllike and about 7 mm long. The flowering period is autumn. Habitat and distribution: Widely cultivated in central, southeast, and southwest China. It is also commonly cultivated in Asia.