Herbal Nomenclature, Classifications and Characteristics
Herbs are named according to their shape, color, smell, taste, geographic location, plant life cycle, specific parts (flower, root, stem etc.), type of material (plant, animal product, mineral), country of origin, and/or the person who discovered them.
These substances are organized according to specific classes based on their action, source, therapeutic function and the internal organs that they affect.
Characteristics include thermal property (hot, cold, neutral, etc.), direction (affinity of the herb for going upward, downward, inward or outward), channel affiliations and toxicity. It is important to note that out of over 7,000 species of medicinal plants in China, not more than 10 species are toxic. Very specific processing has been designed to eliminate or decrease toxicity of these substances.
Another important characteristic of herbs is the relationship of taste and function:
- acrid: release the exterior, disperse outward, move qi and blood
- sweet: tonify deficiencies, harmonize herbs
- sour: stabilize and bind, reduce and prevent loss of body fluids
- bitter: remove heat, purge fire, drain downward, dry dampness
- salty: purge excess, soften hardness, facilitate entrance to the Kidneys
- bland: promote urination
- astringent: stabilize and bind, reduce and prevent the loss of body fluids