Polygonum

Polygonaceae - Polygonoideae
Polygonum campanulata (Hooker 1886)
Syn. Koenigia campanulata (Schuster & Reveal 2015)
Syn. Persicaria campanulata (Ronse Decraene 1988)
Syn. Aconogonon campanulatum (Hara 1966)
Native to China, India, Bhutan, Myanmar, Nepal