Herba Spirodelae （Spirodela polyrrhiza）Quality standard & Fake Stamp
1. Quality standard: The lobes are green on both sides of the abdomen. Green, dry, complete and free of impurities is preferred.
2. Fake Stamp: Big Piao leaves tufted, blade fan pour eggs, apex cross-sectional shape or round, base narrow, is black hair, brown leaves on both sides are sage green or yellow-green, there are 5 ~ 7 pulse, protruding from the next surface, slender; The smell is mild, but the taste is salty.