. Essentials of botany. Botany; Botany. 118 ESSENTIALS OF BOTANY condition is permanent. In other plants, as in Indian corn, the leaf rolls up when the weather is very dry and unroUs again when it receives a better supply of water. 138. Fleshy Leaves.— Many xerophytes and a still larger proportion of halophytes have thick, fleshy leaves, sometimes thick at the base and tapering to a point often nearly cylindrical in form. The common portiilaca, the so-called "ice-plants," and the century-plant offer fa- miliar examples of fleshy leaves. Leaves of this form stand exposure to the hotte
. Essentials of botany. Botany; Botany. 118 ESSENTIALS OF BOTANY condition is permanent. In other plants, as in Indian corn, the leaf rolls up when the weather is very dry and unroUs again when it receives a better supply of water. 138. Fleshy Leaves.— Many xerophytes and a still larger proportion of halophytes have thick, fleshy leaves, sometimes thick at the base and tapering to a point often nearly cylindrical in form. The common portiilaca, the so-called "ice-plants," and the century-plant offer fa- miliar examples of fleshy leaves. Leaves of this form stand exposure to the hottest sunshine, even when the plant is scantily supplied with water. 139. Leaves of Meso- phytes. — The great majority of foliage leaves, such as those of most common garden herbs, grasses, clovers, and so on, belong to this class. They are neither remark- ably thick nor thin, expanded nor scanty in surface, and they show no such special adaptations as rolling up to avoid the parching effect of excessive Fig. 83. Common Pitcher-Plant (Sarracenia purpurea). At the right one of the pitcher-like leaves is shown in 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 Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1908
