Sparganium stoloniferum. Scirpus yagara 三 棱 Sān léng   Branched burreed    Family: Sparganiaceae    

Nature- neutral     FLAVOR: Bitter.
FUNCTIONS
GROUP: Regulating Blood, Remove stasis- strongly
1. Break up Blood, promote flow of Qi, eliminate accumulation, relieve pain.[1]
INDICATIONS- Similar to E shu and often used together.[1]
1. Abdominal swelling and pain, abdominal lumps, swelling of Liver and Spleen, Blood coagulation causing suppressed mense.[1]
PATENT COMBINATIONS
PREPARATIONS: Dried tuber  4-9 g.[1,2]

References
Inner Path can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Similar plants
Sparganium stoloniferum- San leng- with E shu
E shu better for Qi stasis- P- superficial
San leng better for regulating Blood P- deeper.