. Botany for young people and common schools. How plants grow, a simple introduction to structural botany. With a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany. 38 HOW PLANTS GROW. branch, but taper off into a thorn. PricHes, such as those on tlie stems of Roses and Brambles, must not be confounded with thorns. These are growths from the bark (hke hairs or bristles, onlj stouter), and peel off with it; while thorns are connected with the wood. 95. Tendrils, such as those of the Grape-Yine, Virginia Creeper (Fig. 72), and the Melon or Squash


. Botany for young people and common schools. How plants grow, a simple introduction to structural botany. With a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany. 38 HOW PLANTS GROW. branch, but taper off into a thorn. PricHes, such as those on tlie stems of Roses and Brambles, must not be confounded with thorns. These are growths from the bark (hke hairs or bristles, onlj stouter), and peel off with it; while thorns are connected with the wood. 95. Tendrils, such as those of the Grape-Yine, Virginia Creeper (Fig. 72), and the Melon or Squash, are very slender, leafless branches, used to enable certain plants to climb. They grow out straight or nearly so until they reach some nei<rhborin<2: support, such as a stem, when the end hooks around it to secure a hold, and the Avhole ten- dril then shortens itself by coiling up spirally, so draw- ing the growing uf vii-giMia ciceper. shoot ncarcr to tlie supporting object. When the Virginia Creeper climbs tlie side of a building, the face of a rock, or the smooth bark of a tree, vrhich the tendrils cannot lay hold of in the usual way, their tips expand into a flat plate (as shown in Fig. 73, the ends of a tendril magnified), which adheres very firmly to the surface. This enables the plant to climb up a smooth surface by tendrils, just as the Ivy and Trumpet-Creeper climb by rootlets (8G). 96. Peduncles or Flower-stalks are a kind of branches, or stems, as is clear from their situation. They are either a continuation of the stem, as in the Lily of the Valley and the Chalcedonian Lily, represented on the first page; or else they rise â out of the axil of a leaf, as in the Morning-Glory (Fig. 4). Plainly, whatever â¢comes from the axil of a leaf must be of the nature of a branch. So 97. B'lUls, that is axillary buds, are undeveloped branches, as already explained in paragraphs 55 to 58. 98. The following kinds of branches are all connected with the ground in


Size: 2031px × 1230px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookidbotanyforyoungpe00graybookyear1867, c1858bookdecade1860bo