Pharmacognosy: the science that studies the origin identification, production and processing, active components, pharmacological effects, quality evaluation and resource utilization of drugs.

Pharmacognosy: Also known as "natural medicine", it refers to natural, unprocessed or simply processed plants, animals and minerals. Crude drugs in a broad sense include all natural Chinese medicines, herbs, ethnic medicines and raw materials for extracting chemical medicines, that is, raw materials.

Authentic medicinal materials: medicinal materials which have been screened out through long-term clinical application of traditional Chinese medicine and produced by a specific production process in a specific area are better in quality, better in curative effect and higher in popularity than similar medicinal materials produced in other areas.

Second, the four major huaiyao (yam, rehmannia, Achyranthes bidentata, chrysanthemum)

Four emblem drugs (Cortex Moutan, Fructus Chaenomelis, Flos Chrysanthemi, Radix Paeoniae Alba)

Zhejiang Eight Flavors (Atractylodes macrocephala, Radix Paeoniae Alba, Fritillaria thunbergii, Chrysanthemum, Rhizoma Corydalis, Scrophulariae, Ophiopogon japonicus, Radix Curcumae)

Third, the research contents and tasks of pharmacognosy

1. Identify and identify the original medicinal materials accurately.

homonym

Polygonum cuspidatum of Polygonaceae in Northeast China

Isatis indigotica of Cruciferae in East China.

A fern is in Malan, south of China.

The roadside synonyms of Verbenaceae in Jiangxi and Hubei.

Andrographis paniculata: Jianyi Xi, Elemene Lotus, Sophora alopecuroides, Stephania tetrandra and Echinacea purpurea.

Ginseng: ancient names: ghost cover, divine grass, human micro, goblin, human title, goblin.

Different places of origin: Shizhu ginseng, Toyo ginseng, Korean ginseng and Changbai ginseng have different methods: sun ginseng, white ginseng (sugar ginseng) and red ginseng.