Identification method
There are mainly three types of Liu Pinluo, who are widely used in sales, and are characterized by:
1. Nan Liu Sendu (Artemisia annuus): Stem cylindrical ribbed, brown-yellow, hard and brittle, broken and medullated; leaves alternate, margin serrate; branchlets floret densely integrated spikelike; achenes cylindrical; .
2. Northern Liu Sendu (Yin Xingcao): Black stem after stem, pubescent; leaves opposite, pinnately dehiscent; capsule oblong.
3. Yuanbao grass (including Hunan forsythia, etc.): stem cylindrical, yellow-brown; leaves opposite, two leaves into a "Yuanbao"-like; fruit three rooms, the seed is small. Hunan Forsythia is very similar to the species, but the tip of the leaf is tipped, and the two leaves do not even form a "Yuan Bao" shape. The follicles are larger, with 5 rooms; the small forsythia, the plants are smaller, and the follicles are slightly smaller.
In addition, the forms of Artemisia halodendron, Red Chen Ai, and Hypericum etc. in the Asteraceae family are different and can be identified.
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