Osei

Chinese: huang jing

English: polygonatum rhizome

Pharmaceutical: Polygonati Rhizoma

Properties: sweet, balanced

Standard Species: Polygonatum sibiricum Redoute, Polygonatum cyrtonema Hua, Polygonatum kingianum Coll. Et Hemsl.

In Kampo, Polygonatum falcatum A. Gray (Japanese Solomon’s seal) has been utilized.

Polygonatum multiflorum (L.) All. Ruscaceae - Hortus, Amsterdam, Netherlands (Photo by TH. Tanaka)

Polygonatum multiflorum (L.) All. Ruscaceae - Hortus, Amsterdam, Netherlands (Photo by TH. Tanaka)

Polygonatum multiflorum (L.) All. Ruscaceae - Hortus, Amsterdam, Netherlands (Photo by TH. Tanaka)

Japanese Solomon’s seal (Polygonatum falcatum) - Naito Medicinal Herbal Garden, Gifu, Japan (Photo by TH. Tanaka)

Great Solomon’s seal – (Polygonatum canaliculatum) – Hamilton, Canada (Photo by TH. Tanaka)

Great Solomon’s seal – (Polygonatum canaliculatum) – Hamilton, Canada (Photo by TH. Tanaka)

Polygonatum Odoratum (Mill.) Druce - - Hortus botanicus, University of Leidan, Netherlands (Photo by TH Tanaka)