Polygonum multiflorum Thunb is a perennial plant. The tuberous root is thick, oblong and dark brown. Stems twining, 2-4 meters long, multi-branched, with longitudinal edges, hairless, slightly rough, lignified at the lower part. Leaves: ovate or oblong, 3-7 cm long and 2-5 cm wide, tapering at the top, heart-shaped or nearly heart-shaped at the base, rough on both sides, with entire edges; Petiole length1.5-3cm; Stipules sheaths membranous, oblique, glabrous, 3-5 mm long.
Identification method of true and false Polygonum multiflorum Thunb
1, color, texture
The surface of Polygonum multiflorum Thunb is reddish-brown or reddish-brown, with uneven shrinkage, shallow grooves, light yellow-brown or reddish-brown section, and irregular vascular bundles, forming a brocade pattern and solid quality. The false Polygonum multiflorum Thunb. has a dark and smooth surface, a white section, no tendons in the middle and a crisp texture.
2. Rattan stems
Fake Polygonum multiflorum Thunb vines are usually artificially forged by inserting real Polygonum multiflorum Thunb vines into the fake Polygonum multiflorum Thunb when planted later, and will be pulled out when pulled hard.
3. Taste
Unprocessed raw Polygonum multiflorum Thunb. tastes like glycoside. Bitter. Astringent, the prepared Polygonum Multiflori Radix tastes like glycoside. Astringent. Most of the fake Polygonum multiflorum Thunb. glycosides are not bitter or astringent. Slightly sweet.
4. View
This trick is mainly used to distinguish between artificially planted and pure wild, and the central wooden layer (chrysanthemum heart) is obviously higher than pure wild, generally about 0. About 5MM, if you can only see with the naked eye that most of the wooden layer (chrysanthemum heart) is artificial.