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Poisonous plants: 1) Cowbane (Cicuta virosa) with fruits, schizocarps, blossom and sliced root (right); 2) Herb-paris (Paris quadrifolia) with fruit and stamen (right); 3) Fool's parsley (Aethusa Cynapium) with blossom, schizocarp and fruits; 4) Hemlock (Conium maculatum) with fruit and blossom; 5) Autumn crocus (Colchicum autumnale) with root (left) and fruit (cross section); 6) Small pasque flower (Pulsatilla pratensis) with fruits (cross section); 7) Wild lettuce (Lactuca virosa) with blossom and fruit (cross section); 8) Cypress spurge (Euphorbia Cyparissias) with blossoms and female blossom (top); 9) Snakeshead (Arum maculatum) with blossom and fruits. Lithograph after Paul Behrend (German agricultural chemist, 1853 - 1905), published in 1897.