. Botany all the year round; a practical text-book for schools. Botany. 58 THE LEAF the edges of the leaf curve inwards, making a little pouch or stomach, and an acid juice exudes from the glands and digests the meal. After a number of days, varying according to the digestibility of the diet, the blades slowly unfold again and are ready for another capture. In the bladderwort, common in pools and still waters nearly everywhere, the petioles are transformed into floats, while the finely dissected, rootlike blades bear little bladders which, when examined under the microscope, are found to conta
. Botany all the year round; a practical text-book for schools. Botany. 58 THE LEAF the edges of the leaf curve inwards, making a little pouch or stomach, and an acid juice exudes from the glands and digests the meal. After a number of days, varying according to the digestibility of the diet, the blades slowly unfold again and are ready for another capture. In the bladderwort, common in pools and still waters nearly everywhere, the petioles are transformed into floats, while the finely dissected, rootlike blades bear little bladders which, when examined under the microscope, are found to contain the decomposed remains of captured 113. — Bladderwort, showing finely dissected submerged leaves bearing bladders, and petioles transformed to a whorl of floats for buoying up the flowering stem. 72. Protective Leaves. — One of the most frequent modifications of leaves is for protection, either of them- selves or of other organs, against animals, drought, exces- sive moisture, dust, heat, cold, etc. The prickles of the thistle and horse nettle, the hairs of the stinging nettle, and the sharp spears from which the Spanish bayonet ( Yucca aloifolia) takes its name, are all familiar examples of the first kind, as are also the venom of the poison ivy,. 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 Andrews, Eliza Frances, b. 1840. New York, Cincinnati [etc. ] American book company
Size: 1789px × 1396px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1903
