. Botanik für landwirtschaftliche Studenten. Botanik. Klettern Stämme 175 Stiele wachsen über dem Boden, die Knoten kann Wurzeln von Ihren unteren produzieren und stammt aus ihre Oberfläche und damit neue Pflanzen werden gestartet werden, unabhängig von dem Tod der Eltern stammen. Diese Methode der Übertragung wird in der Erdbeere, wo die ausgestreckten Stängel, wie Läufer, pro-Duce Wurzeln an den Spitzen bekannte und neue Anlagen, die bald unabhängig von dem Tod der Läufer geworden. {Abb. 150.) Einige der Gräser und Unkräuter sind in der Lage, sehr schnell von dieser Methode der Übertragung zu verbreiten. Diese Disposition von nod

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. Botany for agricultural students . Botany. CLIMBING STEMS 175 stems grow over the ground, the nodes may produce roots from their lower and stems from their upper surface, and thus new plants are started which become independent by the death of the parent stem. This method of propagation is common in the Strawberry where the prostrate stems, known as runners, pro- duce roots at their tips and start new plants which soon become independent by the death of the runner. {Fig. 150.) Some of the Grasses and weeds are able to spread very rapidly by this method of propagation. This disposition of nodes to grow roots and start new plants is an important feature in the propagation of plants. Not only the. Fig. 150. — Prostrate stem (runner) of the Strawberry producing new plants at the nodes. nodes of prostrate stems will do this, but the nodes of most stems are able to produce roots as well as branches and leaves, if placed in proper conditions. Much use is made of this feature in prop- agating many of our useful plants as we shall see later. Climbing Steins. — Some famihar examples of climbing stems are those of the Pea, Grape, Hop, Woodbine, Poison Ivy, and Morning Glory. Climbing stems, like prostrate stems, grow long and slender, and are not strong enough to support themselves in an erect position. They raise themselves into the light by climb- ing a support, such as a fence, wall, or some erect plant.. Some kinds of Beans having chmbing stems are often planted with the Corn, so that they may have the Corn stems for support, or when planted alone, each plant is provided with a stake for a support. Sweet Peas, Hops, and most Grapes are other famihar plants re- quiring supports. The Woodbine and some wild Grapes are quite notable climbers, often climbing to the tops of tall trees.. 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 perfect

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• bookcentury1900
• bookdecade1910
• booksubjectbotany
• bookyear1919