. Natural history object lessons : a manual for teachers. Fig. 70.—Section of Cherry. Fig. 71.—Section of Plum. stone is formed from the endocarp, the flesh from themesocarp, and the skin from the epicarp. In the almondthe middle covering becomes tough and leathery insteadof juicy and pulpy. Dry fruits have no soft, fleshy layers; they are eitherdehiscent or indehiscent, that is, they may split open in some PLANTS AND THEIR PRODUCTS. 47 regular way to discharge the seed, or they may remainclosed till the seed begins to grow, or until the seed-vesseldecays. (All fleshy and stone fruits are of c
. Natural history object lessons : a manual for teachers. Fig. 70.—Section of Cherry. Fig. 71.—Section of Plum. stone is formed from the endocarp, the flesh from themesocarp, and the skin from the epicarp. In the almondthe middle covering becomes tough and leathery insteadof juicy and pulpy. Dry fruits have no soft, fleshy layers; they are eitherdehiscent or indehiscent, that is, they may split open in some PLANTS AND THEIR PRODUCTS. 47 regular way to discharge the seed, or they may remainclosed till the seed begins to grow, or until the seed-vesseldecays. (All fleshy and stone fruits are of course inde-hiscent.) Of the indehiscent dry fruits the achene, the grain, and thenut are the most familiar examples. The achene includes all
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