Fagopyrum cymosum, also known as tall buckwheat,[2] is a domesticated plant used in traditional Chinese medicine,[3] for animal feed, and as an ornamental plant.

[2] It is native to much of China, and to Bhutan, Nepal, India, Burma, and Vietnam.

[3] The flowers are known for their high content of fagopyrin, a naphthodianthrone that provokes phototoxic effects known as fagopyrism.

[4] This Polygonaceae article is a stub.

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