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Medicinal plants. Top row: Piper cubeba with male blossom stem, female fruit branch (left), and fruit stem (top); Tamarindus indica with blossom, and open fruit; Cinchona calisaya with fruits, and blossom (top); Ipomoea purga with blossom, and root tuber. Middle row: Copaifera langsdorffii with blossom; Senna alexandrina (or Cassia acutifolia) with cut blossom (top), and fruit. Bottom row: Valeriana officinalis with fruit (top), and blossom; Strychnos nux-vomica with blossom, seed (right), and cut fruit; Ricinus communis with blossom, and fruit (right) and seed (bottom); Crocus sativus with one of the three scars (a); Glycyrrhiza glabra (Liquorice) with blossom. Wood engravings, published in 1897.