. How plants grow [microform] : a simple introduction to structural botany : with a popular flora, or an arrangement and description of common plants, both wild and cultivated : illustrated by 500 wood engravings. Botany; Botanique. 18 HOW PLANTS GROW FROM THE SEED. 41. Tho seed-leaves of the Bean are thickened by having so much nourishment stored up in them, so much of it that they make good food for men. And the object of this large supply is that the plant may gvovr more strongly and rapidly fram the seed. It need not and it does not wait, as the Maple and the Moming-Glory do, slowly to mak
. How plants grow [microform] : a simple introduction to structural botany : with a popular flora, or an arrangement and description of common plants, both wild and cultivated : illustrated by 500 wood engravings. Botany; Botanique. 18 HOW PLANTS GROW FROM THE SEED. 41. Tho seed-leaves of the Bean are thickened by having so much nourishment stored up in them, so much of it that they make good food for men. And the object of this large supply is that the plant may gvovr more strongly and rapidly fram the seed. It need not and it does not wait, as the Maple and the Moming-Glory do, slowly to make the second pair of leaves; but is able to develop these at once. Accordingly, the rudiments of these next leaves may be seen in the seed before growth u^''^^^ N|ji/ '^5(^s(V'''Nr-J begins, in the form of a little bud (Fig. 33, />), ready T ^W'B*^ ^^^J to grow and unfold as soon as the thick seed-leaves themselves appear above ground (Fig. 34), and soon making the first real foliage (Fig. 35). For the seed>leaves of the Bean are themselves so thick and ungainly, that, although they turn green, they hardly serve for foliage. But, having given up their great stock of nourishment to the forming root and new leaves, and enabled these to grow much stronger and faster than they otherwise could, they wither and fall off. It is nearly the same in 42. The Cherry, Almond, &e. Fig. 36 is an Almond j^-'^^f^^^^Ty \ I taken out of the shell, soaked a little, and the thin /T >f/ji^YvSk iL seed-coat removed. The whole -/i^>*- lr'\l^c^ jg jy^ embryo, consisting of a pair of large and thick seed- leaves, loaded with sweet nour- ishment. These are borne on a very short radicle, or stemlet, which is seen at the lower end. Pull off one of the seed-leaves, as in Fig. 37, and you may see the plumule or little bud, Pj ready to develop leaves and stem upwards, while the other end of the radicle grows downward and makes. the root; the nourishment rich store of in the seed-. Please note
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectbotany, bookyear1858
