This image is from Sweet Flag in Harding's Ginseng and Other Medicinal Plants, 1936.
This drawing is a copy of the original painting in Köhler's Medizinalpflanzen, and has also been used in Virokannas 1913, Eneberg 1915, and Sayre 1917.

This image is from Sweet Flag in Harding's Ginseng and Other Medicinal Plants, 1936.
This drawing is a copy of the original painting in Köhler's Medizinalpflanzen, and has also been used in Virokannas 1913, Eneberg 1915, and Sayre 1917.