Dendrobium is one of the earliest recorded Orchidaceae plants in ancient Chinese literature. It can be divided into more than 70 species, such as Tin, Huangcao, Jinchai and Horsewhip. Dendrobium officinale is the top grade of Dendrobium officinale. It is named for its iron-green skin. Dendrobium candidum is mostly grown on semi-humid rocks in mountainous areas up to 1600 meters above sea level. It likes warm and humid climate and semi-yin and semi-yang environment, and is not cold-resistant.
Dendrobium officinale is one of the most valuable traditional Chinese medicines in China. It has a history of more than 2,000 years of medicinal practice. It is regarded as the quintessence of traditional Chinese medicine. It is called "giant panda in medicinal field" by international medicinal plant circles and "life-saving herb" by Chinese folk.
Dendrobium candidum is used as medicine by its stem. Its tender stem is specially processed, twisted into spiral or spring shape, and dried in the sun. It is called the iron maple bucket.
Records of ancient books
"Taste sweet, flat, non-toxic. In the treatment of injuries, remove arthralgia, lower qi, fill five viscera deficiency, thin, strong yin. Take long, thick stomach, light body, prolong life. —— Shennong Herbal Classic
"Benefiting the essence and replenishing the internal deficiency, calming the stomach qi." —— Classification of Famous Doctors
"Strengthen Yin and nourish essence, strengthen intestines and stomach, nourish internal deficiencies, calm stomach qi, long muscle, improve intelligence and eliminate shock, light body and prolong life." —— Compendium of Materia Medica
In Tao Zang, Dendrobium officinale, Saussurea tianshanensis, Ginseng triple and double, Radix Polygoni multiflori, Poria cocos and Cistanche rosea, Ganoderma lucidum, seabed pearls and Cordyceps sinensis are listed in turn as the nine major centenaries in China.