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The sun flower as a type of flowering plants by Anne B. Jewett, 1890

The Sun Flower as a Type of Flowering Plants by Anne B. Jewett, 1890, Page 32

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29. [underlined] Fig. 19. [/underlined] Shows the section of the epidermis from the under side of the cotyledon, the cells in this being much more irregular and the Stomata more numerous. The evaporation does not in this case proceed from the surface of the organ (or only slightly), but in its interior, viz. at the places where the cells of the parenchyma bound the intercellular spaces which contain vapor. The production of vapor in
 
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