Tianma is the 46th herbal medicine of " Shennong Bencao Jing ". It is derived from the dry tubers of the orchid plant . It is also known as: Red Arrow , Duozhi , Shenma , etc. It is a perennial herb. Because Gastrodia elata does not have photosynthesis , so it must symbiotic with with fungi cynomia and cynomia. During the seed germination period, the purple cynomia mushroom provides nutrition. After growing to the primordial bulb, honey cynomia provides nutrition, and the plants mostly grow under the forest with more humus and moist. It is now mostly produced in Zhaotong, Yunnan, Dafang, Guizhou, , Sichuan, Qingchuan, and other regions.
Gastrodia elata. Generally, after the beginning of winter, it is said that "winter elata" is of better quality. It is said that "spring elata" is less quality, which may cause hollowness. Wash it immediately after harvest, steam it in a steamer, and dry it open at low temperature.
[Traces] This product is irregular in slices. The outer skin is pale yellow to yellow-brown, and sometimes horizontal ring lines formed in dots can be seen. Cut faces yellowish-white to light brown. Horny, translucent. The air is mild and the taste is sweet.
[Production] bran fry: Preheat the wok, sprinkle the wheat bran into the hot pot. When smoked, add dianthium slices , stir-fry over low heat until yellow, and when there is a slight burning spot, take it out and cool it down.
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