This product is slightly conical, with a length of 5 ~ 18 cm. The rhizome is short, with stem and leaf residues at the upper end, long and narrow, membranous or fibrous. The outer layer is dark brown and the inner layer is brown or yellow. Single or several roots, in the form of nodes, branches or juxtaposition, with a diameter of 0.3 ~ 1 cm.
The surface is brown and shriveled, with fine roots and fibrous roots. Brittle, easily broken, rough section, dark brown skin, often cracked, yellow-white wood. Special breath, bitter and pungent taste, and cool feeling.
Growing environment:
Gan Song is a perennial herb. The flowering period is June-July, and the fruiting period is 8-65438+1October. During the period of 65438+ 10, the leaves turned yellow and stopped growing. In winter, the leaves fall off and sleep under the snow layer. When the snow melts the next summer, they begin to grow. The growing environment is bushes, hillsides and gedian Mountain at an altitude of 3,000-5,000 meters, and it is distributed in open stony grassland or grassy frozen soil and semi-shady humus soil under strong forest, and it prefers light and wet humus soil.
More suitable for western hillside, closely related to altitude; Plant height, density, aboveground vegetation, soil nitrogen content and humidity affect whether the underground part can grow well.