The source is the wood of the genus Cinnamonum camphora (L.) Presl. Plants are evergreen trees with aromas. The bark is yellowish brown with irregular longitudinal cracks. Leaves alternate, thin leathery, ovate, 6 to 12 cm long, 3 to 6 cm wide, grayish green below, from the base three veins, veins have obvious glands. Panicles axillary; perianth segments 6, yellowish green, inner densely shortly pubescent; fertile stamens 9, anthers 4-loculed, 3-loculed stamens anther exserted, valvular; ovate superior. Berry globose, purple-black, fruit-shaped cupped. Flowering period from May to June, fruiting period from October to November. Born on the slopes and streams; cultivated. The main production is south of the Yangtze River and southwest of the country. Harvest trees in winter, chopped or sawn into blocks, dried or air dried. The traits of the wood are different in size, with a reddish brown to dark brown surface and an annual ring visible in the cross section. Heavy and hard. It has a strong camphor aroma, a cool taste and a spicy feeling. The chemical composition contains volatile oil. The main components in the oil are d-camphor, cineole, safrole, and also include camphorenol, camphorenone and d. - terpenes, terpenes, phellandrene, d-limonene, cadinene, dragon brain and the like. Sexually lukewarm, spicy. Indications: rheumatism, meridians, pain relief, digestion. For rheumatic pain, chills, cholera, bloating, hangover, bruises. Note: Camphor is a granular crystal of eucalyptus roots, stems, branches and leaves. Sexual temperature, Weixin; can ridicule, relieve pain, and dampness and insecticide. Nucleic Acid Extraction Or Purifiation Reagent Nucleic Acid Extraction Or Purifiation Reagent,Nucleic Acid Extraction,Dna Purification Kits For Cells,Gel Dna Purification Kit Guangzhou Baybio Bio-tech Co., Ltd , https://www.gzbaybio.com