. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada . Botany; Botany; Botany. V THE STEM, OR ASGENDINO AXIS. 33 sisting of young wood bearing one or more buds. These " strike" root â when planted in the earth. So the grape-vine and hop. 159. The Offset is a term applied to short side-branches ending in a tuft (rosette) of leaves, and capable of taking root when separated from the parent plant, as in 41, A strawberry plant (Fragaria vesca) sending out a runner. 160. The Eunneb is a
. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada . Botany; Botany; Botany. V THE STEM, OR ASGENDINO AXIS. 33 sisting of young wood bearing one or more buds. These " strike" root â when planted in the earth. So the grape-vine and hop. 159. The Offset is a term applied to short side-branches ending in a tuft (rosette) of leaves, and capable of taking root when separated from the parent plant, as in 41, A strawberry plant (Fragaria vesca) sending out a runner. 160. The Eunneb is a prostrate, filiform branch issuing from certain short-stemmed herbs, extending itself along the surface of the ground, striking root at its end without being buried. Thence leaves arise and a new plant, which in turn sends out new runners ; as in the strawberry. 161. The node or joint of the stem marks a definite point of a pecu- liar organization where the leaf with its axillary bud arises. The nodes occur at regular intervals, and the spaces between them are termed in- ternodes. This provides for the symmetrical arrangement of the leaves and branches of the stem. In the i'oot no such provision is made, and the branches have no manner of 'arrangement. 162. Why the stem gradually diminishes upwards. In the in- ternodes the fibres composing the stem are parallel, but at the nodes this order is interrupted in consequence of some of the inner fibres from below turning outwards into the leafstalk, causing more or less a jointed appearance. Hence each internode contains fewer fibres than those below it. 163. How the stem grows. The growth of the stem consists in the development of the internodes. In the bud the nodes are closely crowded together, with no perceptible internodes, thus bringing the ru- dimentary leaves in close contact with each other. But in the stem, which is afterwards evolved from that bud, wo see full grown leaves separated by considerable spaces. That is, while
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