"It takes them some days to develop and blossom," said the Professor. "The stem rises slowly from a little point, getting longer and longer, until it reaches its full size. Shrubs and trees begin in the same way, mounting upward until they reach their proper height. If you examine the ground closely, you will find plenty of little plants just peeping out. Most of them are grass, and keep on about the same as they begin; but some change very greatly, and take all kinds of shapes and directions. They soon put out their leaves, one by one, or two by two, along the stem, short spaces apart. Just above the leaves, in the larger plants, branches start out, and grow much like the stem, with their own leaves."
"How do the flowers come?" asked Gus.
"Sometimes they grow on a little stem of their own, called a scape, that springs up separately from the root. But usually the main stem or one of the branches is changed into a flower-stem. Now suppose we cut this rose-bud in two, and then I can s