. Outlines of plant life : with special reference to form and function . Botany. XEROPHYTES AND HALOPHYTES. 241 Stalk of sugar-cane (fig. 204). The interior layers of the wall of the epidermis are sometimes converted into mucilage, which retards the evaporation of water. The sinking of the stomata below the general level (fig. 205), their arrangement in pits (fig. 206) or in grooves (fig. 197), and their restriction to the under side of the leaf (fig. 206) may- be looked upon as further epidermal adaptations to reduce evaporation. In the leaves of some xero- phytes the guard cells of the stoma
. Outlines of plant life : with special reference to form and function . Botany. XEROPHYTES AND HALOPHYTES. 241 Stalk of sugar-cane (fig. 204). The interior layers of the wall of the epidermis are sometimes converted into mucilage, which retards the evaporation of water. The sinking of the stomata below the general level (fig. 205), their arrangement in pits (fig. 206) or in grooves (fig. 197), and their restriction to the under side of the leaf (fig. 206) may- be looked upon as further epidermal adaptations to reduce evaporation. In the leaves of some xero- phytes the guard cells of the stomata are only when young, becoming thick-walled and fixed when the leaf is mature. The stoma itself sometimes becomes closed, also. fh) The internal. Fig. 203.âShieldlike scales of an Q\&d&X^x{EliBagnus angustifolia). seen from â above. Magnified about mr»fil<a SO diam.âAfter Kemer. muuie. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Barnes, Charles Reid, 1858-1910. New York : Henry Holt and Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1900
