Wild Gastrodia elata:

Gastrodia elata, which belongs to Gastrodia of Orchidaceae.

gastrodia elata is a saprophytic herb. The plant is 3 to 1 cm high, sometimes up to 2 meters; Rhizomes are thick, tuberous, oval to nearly dumbbell-shaped, fleshy, 8-12 cm long and 3-7 cm in diameter, sometimes larger, with dense nodes, which are covered with many triangular broadly ovoid sheaths. The stem is erect, orange-yellow, yellow, grayish brown or blue-green, without green leaves, and the lower part is covered with several membranous sheaths.

racemes are 5 to 5 cm long and usually have 3 to 5 flowers; Bud segments are long and round-lanceolate, 1 to 1.5 cm long and membranous; Pedicels and ovaries are 7 to 12 mm long, slightly shorter than bracts; Flowers twisted, orange yellow, light yellow, blue-green or yellow-white, nearly erect; The perianth tube formed by the combination of sepals and petals is about 1 cm long and 5 to 7 mm in diameter. It is nearly oblique and oval-cylindrical, with 5 lobes at the top, but the gap in front, that is, where two lateral sepals are combined, is as deep as 5 mm, and the base of the tube protrudes forward. Outer lobe (sepal free part) is ovate-triangular, with blunt apex; The inner lobe (petal free part) is nearly oblong and smaller; The labellum is oblong-ovoid, 6-7 mm long and 3-4 mm wide, 3-cleft, with a pair of fleshy calluses attached to the end of pistil foot and the inner wall of perianth tube at the base, free on the upper part, with mastoid on the upper face and irregular short tassels at the edge; The pistil is 5 to 7 mm long and has short pistil feet.

The capsule is ovoid and oval, 1.4 to 1.8 cm long and 8 to 9 mm wide. The flowering and fruiting period is from May to July.

habitats

are distributed in Jilin, Liaoning, Inner Mongolia, Hebei, Shanxi, Shaanxi, Gansu, Jiangsu, Anhui, Zhejiang, Jiangxi, Taiwan, Henan, Hubei, Hunan, Sichuan, Guizhou, Yunnan and Tibet. Born in sparse forests, open spaces in forests, forest edges, scrub edges, with an altitude of 4 to 32 meters.

Growth habit

Conditions: Gastrodia elata has no roots and leaves, and cannot carry out photosynthesis. It relies on Armillaria mellea to supply nutrition for growth and reproduction. Therefore, the first step in planting gastrodia elata is to cultivate a certain number of high-quality Armillaria mellea materials, and the second step is to introduce gastrodia elata seeds. And is planted with Armillaria mellea in time.

environment: the optimum temperature for the growth of gastrodia elata is 1-3℃, the optimum temperature is 2-25℃, the relative humidity of air is about 8%, the water content of soil is 5-55%, and the pH value is 5-6, which is an acidic ecological environment.

Main value

Gastrodia elata is a valuable Chinese medicine.