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 89 3. Leaves, magnified. 4. Male involucrum, containing two flowers, magnified. 5. — empty. 6. Two male flowers. 7. A mule flower divided longitudinally. 8. — deprived of its Calyptra, 9. 10. Lower cell of a male flower. 11 and 12. Different views of the contents of the upper cell. 13. Longitudinal section of the upper cell. 14. Inner female involucrum. 15. Capsules, with their footstalks arising from the base of the involucrum. 16. A capsule more highly magnified. 17. — opened transversely to show the position of the seeds. 18. — — empty. 19. Seeds.