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5 results filtered with: Lactuca
  • Opium lettuce (Lactuca virosa): entire flowering and fruiting plant. Coloured etching by C. Pierre, c. 1865, after P. Naudin.
  • A plant (Lactuca tuberosa) related to lettuce: entire flowering plant with separate flower and seed. Coloured engraving after F. von Scheidl, 1770.
  • Four poisonous plants: hemlock (Conium maculatum), henbane (Hyoscyamus niger), opium lettuce (Lactuca virosa) and autumn crocus (Colchicum autumnale). Coloured engraving by J. Johnstone.
  • SEM of open stoma on lettuce leaf
  • SEM of open stoma on lettuce leaf